/*
- * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
#include "config.h"
#include <string.h>
+#include <stdbool.h>
#include "irnode_t.h"
#include "irgraph_t.h"
#include "iropt_t.h"
#include "ircons_t.h"
#include "irgmod.h"
-#include "irvrfy.h"
+#include "irverify.h"
+#include "iroptimize.h"
#include "tv_t.h"
#include "dbginfo_t.h"
#include "iropt_dbg.h"
#include "irhooks.h"
#include "irarch.h"
#include "hashptr.h"
-#include "opt_confirms.h"
#include "opt_polymorphy.h"
#include "irtools.h"
#include "irhooks.h"
#include "array_t.h"
+#include "vrp.h"
+#include "firm_types.h"
+#include "bitfiddle.h"
+#include "be.h"
/* Make types visible to allow most efficient access */
#include "entity_t.h"
/**
* Returns the tarval of a Const node or tarval_bad for all other nodes.
*/
-static tarval *default_value_of(const ir_node *n) {
+static ir_tarval *default_value_of(const ir_node *n)
+{
if (is_Const(n))
return get_Const_tarval(n); /* might return tarval_bad */
else
value_of_func value_of_ptr = default_value_of;
/* * Set a new value_of function. */
-void set_value_of_func(value_of_func func) {
+void set_value_of_func(value_of_func func)
+{
if (func != NULL)
value_of_ptr = func;
else
/**
* Return the value of a Constant.
*/
-static tarval *computed_value_Const(const ir_node *n) {
+static ir_tarval *computed_value_Const(const ir_node *n)
+{
return get_Const_tarval(n);
} /* computed_value_Const */
/**
* Return the value of a 'sizeof', 'alignof' or 'offsetof' SymConst.
*/
-static tarval *computed_value_SymConst(const ir_node *n) {
+static ir_tarval *computed_value_SymConst(const ir_node *n)
+{
ir_type *type;
ir_entity *ent;
/**
* Return the value of an Add.
*/
-static tarval *computed_value_Add(const ir_node *n) {
+static ir_tarval *computed_value_Add(const ir_node *n)
+{
ir_node *a = get_Add_left(n);
ir_node *b = get_Add_right(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad))
return tarval_add(ta, tb);
* Return the value of a Sub.
* Special case: a - a
*/
-static tarval *computed_value_Sub(const ir_node *n) {
- ir_mode *mode = get_irn_mode(n);
- ir_node *a = get_Sub_left(n);
- ir_node *b = get_Sub_right(n);
- tarval *ta;
- tarval *tb;
+static ir_tarval *computed_value_Sub(const ir_node *n)
+{
+ ir_mode *mode = get_irn_mode(n);
+ ir_node *a = get_Sub_left(n);
+ ir_node *b = get_Sub_right(n);
+ ir_tarval *ta;
+ ir_tarval *tb;
/* NaN - NaN != 0 */
if (! mode_is_float(mode)) {
* Return the value of a Carry.
* Special : a op 0, 0 op b
*/
-static tarval *computed_value_Carry(const ir_node *n) {
- ir_node *a = get_binop_left(n);
- ir_node *b = get_binop_right(n);
- ir_mode *m = get_irn_mode(n);
-
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+static ir_tarval *computed_value_Carry(const ir_node *n)
+{
+ ir_node *a = get_binop_left(n);
+ ir_node *b = get_binop_right(n);
+ ir_mode *m = get_irn_mode(n);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
tarval_add(ta, tb);
* Return the value of a Borrow.
* Special : a op 0
*/
-static tarval *computed_value_Borrow(const ir_node *n) {
- ir_node *a = get_binop_left(n);
- ir_node *b = get_binop_right(n);
- ir_mode *m = get_irn_mode(n);
-
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+static ir_tarval *computed_value_Borrow(const ir_node *n)
+{
+ ir_node *a = get_binop_left(n);
+ ir_node *b = get_binop_right(n);
+ ir_mode *m = get_irn_mode(n);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
- return tarval_cmp(ta, tb) == pn_Cmp_Lt ? get_mode_one(m) : get_mode_null(m);
+ return tarval_cmp(ta, tb) == ir_relation_less ? get_mode_one(m) : get_mode_null(m);
} else if (tarval_is_null(ta)) {
return get_mode_null(m);
}
/**
* Return the value of an unary Minus.
*/
-static tarval *computed_value_Minus(const ir_node *n) {
- ir_node *a = get_Minus_op(n);
- tarval *ta = value_of(a);
+static ir_tarval *computed_value_Minus(const ir_node *n)
+{
+ ir_node *a = get_Minus_op(n);
+ ir_tarval *ta = value_of(a);
if (ta != tarval_bad)
return tarval_neg(ta);
/**
* Return the value of a Mul.
*/
-static tarval *computed_value_Mul(const ir_node *n) {
- ir_node *a = get_Mul_left(n);
- ir_node *b = get_Mul_right(n);
- ir_mode *mode;
-
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+static ir_tarval *computed_value_Mul(const ir_node *n)
+{
+ ir_node *a = get_Mul_left(n);
+ ir_node *b = get_Mul_right(n);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
+ ir_mode *mode;
mode = get_irn_mode(n);
if (mode != get_irn_mode(a)) {
return tarval_bad;
} /* computed_value_Mul */
-/**
- * Return the value of an Abs.
- */
-static tarval *computed_value_Abs(const ir_node *n) {
- ir_node *a = get_Abs_op(n);
- tarval *ta = value_of(a);
-
- if (ta != tarval_bad)
- return tarval_abs(ta);
-
- return tarval_bad;
-} /* computed_value_Abs */
-
/**
* Return the value of an And.
* Special case: a & 0, 0 & b
*/
-static tarval *computed_value_And(const ir_node *n) {
- ir_node *a = get_And_left(n);
- ir_node *b = get_And_right(n);
-
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+static ir_tarval *computed_value_And(const ir_node *n)
+{
+ ir_node *a = get_And_left(n);
+ ir_node *b = get_And_right(n);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
return tarval_and (ta, tb);
* Return the value of an Or.
* Special case: a | 1...1, 1...1 | b
*/
-static tarval *computed_value_Or(const ir_node *n) {
- ir_node *a = get_Or_left(n);
- ir_node *b = get_Or_right(n);
-
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+static ir_tarval *computed_value_Or(const ir_node *n)
+{
+ ir_node *a = get_Or_left(n);
+ ir_node *b = get_Or_right(n);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
return tarval_or (ta, tb);
/**
* Return the value of an Eor.
*/
-static tarval *computed_value_Eor(const ir_node *n) {
+static ir_tarval *computed_value_Eor(const ir_node *n)
+{
ir_node *a = get_Eor_left(n);
ir_node *b = get_Eor_right(n);
- tarval *ta, *tb;
+ ir_tarval *ta, *tb;
if (a == b)
return get_mode_null(get_irn_mode(n));
tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
- return tarval_eor (ta, tb);
+ return tarval_eor(ta, tb);
}
return tarval_bad;
} /* computed_value_Eor */
/**
* Return the value of a Not.
*/
-static tarval *computed_value_Not(const ir_node *n) {
- ir_node *a = get_Not_op(n);
- tarval *ta = value_of(a);
+static ir_tarval *computed_value_Not(const ir_node *n)
+{
+ ir_node *a = get_Not_op(n);
+ ir_tarval *ta = value_of(a);
if (ta != tarval_bad)
return tarval_not(ta);
/**
* Return the value of a Shl.
*/
-static tarval *computed_value_Shl(const ir_node *n) {
+static ir_tarval *computed_value_Shl(const ir_node *n)
+{
ir_node *a = get_Shl_left(n);
ir_node *b = get_Shl_right(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
- return tarval_shl (ta, tb);
+ return tarval_shl(ta, tb);
}
return tarval_bad;
} /* computed_value_Shl */
/**
* Return the value of a Shr.
*/
-static tarval *computed_value_Shr(const ir_node *n) {
+static ir_tarval *computed_value_Shr(const ir_node *n)
+{
ir_node *a = get_Shr_left(n);
ir_node *b = get_Shr_right(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
- return tarval_shr (ta, tb);
+ return tarval_shr(ta, tb);
}
return tarval_bad;
} /* computed_value_Shr */
/**
* Return the value of a Shrs.
*/
-static tarval *computed_value_Shrs(const ir_node *n) {
+static ir_tarval *computed_value_Shrs(const ir_node *n)
+{
ir_node *a = get_Shrs_left(n);
ir_node *b = get_Shrs_right(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
- return tarval_shrs (ta, tb);
+ return tarval_shrs(ta, tb);
}
return tarval_bad;
} /* computed_value_Shrs */
/**
* Return the value of a Rotl.
*/
-static tarval *computed_value_Rotl(const ir_node *n) {
+static ir_tarval *computed_value_Rotl(const ir_node *n)
+{
ir_node *a = get_Rotl_left(n);
ir_node *b = get_Rotl_right(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
if ((ta != tarval_bad) && (tb != tarval_bad)) {
return tarval_rotl(ta, tb);
/**
* Return the value of a Conv.
*/
-static tarval *computed_value_Conv(const ir_node *n) {
+static ir_tarval *computed_value_Conv(const ir_node *n)
+{
ir_node *a = get_Conv_op(n);
- tarval *ta = value_of(a);
+ ir_tarval *ta = value_of(a);
if (ta != tarval_bad)
return tarval_convert_to(ta, get_irn_mode(n));
* Calculate the value of a Mux: can be evaluated, if the
* sel and the right input are known.
*/
-static tarval *computed_value_Mux(const ir_node *n) {
+static ir_tarval *computed_value_Mux(const ir_node *n)
+{
ir_node *sel = get_Mux_sel(n);
- tarval *ts = value_of(sel);
+ ir_tarval *ts = value_of(sel);
if (ts == get_tarval_b_true()) {
ir_node *v = get_Mux_true(n);
* Calculate the value of a Confirm: can be evaluated,
* if it has the form Confirm(x, '=', Const).
*/
-static tarval *computed_value_Confirm(const ir_node *n) {
- /*
- * Beware: we might produce Phi(Confirm(x == true), Confirm(x == false)).
- * Do NOT optimize them away (CondEval wants them), so wait until
- * remove_confirm is activated.
- */
- if (get_opt_remove_confirm()) {
- if (get_Confirm_cmp(n) == pn_Cmp_Eq) {
- tarval *tv = value_of(get_Confirm_bound(n));
- if (tv != tarval_bad)
- return tv;
- }
+static ir_tarval *computed_value_Confirm(const ir_node *n)
+{
+ if (get_Confirm_relation(n) == ir_relation_equal) {
+ ir_tarval *tv = value_of(get_Confirm_bound(n));
+ if (tv != tarval_bad)
+ return tv;
}
return value_of(get_Confirm_value(n));
} /* computed_value_Confirm */
/**
- * Return the value of a Proj(Cmp).
- *
- * This performs a first step of unreachable code elimination.
- * Proj can not be computed, but folding a Cmp above the Proj here is
- * not as wasteful as folding a Cmp into a Tuple of 16 Consts of which
- * only 1 is used.
- * There are several case where we can evaluate a Cmp node, see later.
+ * gives a (conservative) estimation of possible relation when comparing
+ * left+right
*/
-static tarval *computed_value_Proj_Cmp(const ir_node *n) {
- ir_node *a = get_Proj_pred(n);
- ir_node *aa = get_Cmp_left(a);
- ir_node *ab = get_Cmp_right(a);
- long proj_nr = get_Proj_proj(n);
-
- /*
- * BEWARE: a == a is NOT always True for floating Point values, as
- * NaN != NaN is defined, so we must check this here.
- */
- if (aa == ab && (
- !mode_is_float(get_irn_mode(aa)) || proj_nr == pn_Cmp_Lt || proj_nr == pn_Cmp_Gt)
- ) { /* 1.: */
-
- /* This is a trick with the bits used for encoding the Cmp
- Proj numbers, the following statement is not the same:
- return new_tarval_from_long (proj_nr == pn_Cmp_Eq, mode_b) */
- return new_tarval_from_long (proj_nr & pn_Cmp_Eq, mode_b);
- }
- else {
- tarval *taa = value_of(aa);
- tarval *tab = value_of(ab);
- ir_mode *mode = get_irn_mode(aa);
-
- /*
- * The predecessors of Cmp are target values. We can evaluate
- * the Cmp.
- */
- if ((taa != tarval_bad) && (tab != tarval_bad)) {
- /* strange checks... */
- pn_Cmp flags = tarval_cmp(taa, tab);
- if (flags != pn_Cmp_False) {
- return new_tarval_from_long (proj_nr & flags, mode_b);
- }
- }
- /* for integer values, we can check against MIN/MAX */
- else if (mode_is_int(mode)) {
- /* MIN <=/> x. This results in true/false. */
- if (taa == get_mode_min(mode)) {
- /* a compare with the MIN value */
- if (proj_nr == pn_Cmp_Le)
- return get_tarval_b_true();
- else if (proj_nr == pn_Cmp_Gt)
- return get_tarval_b_false();
- }
- /* x >=/< MIN. This results in true/false. */
- else
- if (tab == get_mode_min(mode)) {
- /* a compare with the MIN value */
- if (proj_nr == pn_Cmp_Ge)
- return get_tarval_b_true();
- else if (proj_nr == pn_Cmp_Lt)
- return get_tarval_b_false();
- }
- /* MAX >=/< x. This results in true/false. */
- else if (taa == get_mode_max(mode)) {
- if (proj_nr == pn_Cmp_Ge)
- return get_tarval_b_true();
- else if (proj_nr == pn_Cmp_Lt)
- return get_tarval_b_false();
- }
- /* x <=/> MAX. This results in true/false. */
- else if (tab == get_mode_max(mode)) {
- if (proj_nr == pn_Cmp_Le)
- return get_tarval_b_true();
- else if (proj_nr == pn_Cmp_Gt)
- return get_tarval_b_false();
- }
- }
- /*
- * The predecessors are Allocs or (void*)(0) constants. Allocs never
- * return NULL, they raise an exception. Therefore we can predict
- * the Cmp result.
- */
- else {
- ir_node *aaa = skip_Proj(aa);
- ir_node *aba = skip_Proj(ab);
-
- if ( ( (/* aa is ProjP and aaa is Alloc */
- is_Proj(aa)
- && mode_is_reference(get_irn_mode(aa))
- && is_Alloc(aaa))
- && ( (/* ab is NULL */
- mode_is_reference(get_irn_mode(ab))
- && tarval_is_null(tab))
- || (/* ab is other Alloc */
- is_Proj(ab)
- && mode_is_reference(get_irn_mode(ab))
- && is_Alloc(aba)
- && (aaa != aba))))
- || (/* aa is NULL and aba is Alloc */
- mode_is_reference(get_irn_mode(aa))
- && tarval_is_null(taa)
- && is_Proj(ab)
- && mode_is_reference(get_irn_mode(ab))
- && is_Alloc(aba)))
- /* 3.: */
- return new_tarval_from_long(proj_nr & pn_Cmp_Lg, mode_b);
- }
- }
- return computed_value_Cmp_Confirm(a, aa, ab, proj_nr);
-} /* computed_value_Proj_Cmp */
+ir_relation ir_get_possible_cmp_relations(const ir_node *left,
+ const ir_node *right)
+{
+ ir_relation possible = ir_relation_true;
+ ir_tarval *tv_l = value_of(left);
+ ir_tarval *tv_r = value_of(right);
+ ir_mode *mode = get_irn_mode(left);
+ ir_tarval *min = mode == mode_b ? tarval_b_false : get_mode_min(mode);
+ ir_tarval *max = mode == mode_b ? tarval_b_true : get_mode_max(mode);
+
+ /* both values known - evaluate them */
+ if ((tv_l != tarval_bad) && (tv_r != tarval_bad)) {
+ possible = tarval_cmp(tv_l, tv_r);
+ /* we can return now, won't get any better */
+ return possible;
+ }
+ /* a == a is never less or greater (but might be equal or unordered) */
+ if (left == right)
+ possible &= ~ir_relation_less_greater;
+ /* unordered results only happen for float compares */
+ if (!mode_is_float(mode))
+ possible &= ~ir_relation_unordered;
+ /* values can never be less than the least representable number or
+ * greater than the greatest representable number */
+ if (tv_l == min)
+ possible &= ~ir_relation_greater;
+ if (tv_l == max)
+ possible &= ~ir_relation_less;
+ if (tv_r == max)
+ possible &= ~ir_relation_greater;
+ if (tv_r == min)
+ possible &= ~ir_relation_less;
+ /* maybe vrp can tell us more */
+ possible &= vrp_cmp(left, right);
+ /* Alloc nodes never return null (but throw an exception) */
+ if (is_Alloc(left) && tarval_is_null(tv_r))
+ possible &= ~ir_relation_equal;
+
+ return possible;
+}
/**
- * Return the value of a floating point Quot.
+ * Return the value of a Cmp.
+ *
+ * The basic idea here is to determine which relations are possible and which
+ * one are definitely impossible.
*/
-static tarval *do_computed_value_Quot(const ir_node *a, const ir_node *b) {
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
-
- /* cannot optimize 0 / b = 0 because of NaN */
- if (ta != tarval_bad && tb != tarval_bad)
- return tarval_quo(ta, tb);
- return tarval_bad;
-} /* do_computed_value_Quot */
+static ir_tarval *computed_value_Cmp(const ir_node *cmp)
+{
+ ir_node *left = get_Cmp_left(cmp);
+ ir_node *right = get_Cmp_right(cmp);
+ ir_relation possible = ir_get_possible_cmp_relations(left, right);
+ ir_relation relation = get_Cmp_relation(cmp);
+
+ /* if none of the requested relations is possible, return false */
+ if ((possible & relation) == ir_relation_false)
+ return tarval_b_false;
+ /* if possible relations are a subset of the requested ones return true */
+ if ((possible & ~relation) == ir_relation_false)
+ return tarval_b_true;
+
+ return computed_value_Cmp_Confirm(cmp, left, right, relation);
+}
/**
- * Calculate the value of an integer Div of two nodes.
+ * Calculate the value of an integer Div.
* Special case: 0 / b
*/
-static tarval *do_computed_value_Div(const ir_node *a, const ir_node *b) {
- tarval *ta = value_of(a);
- tarval *tb;
+static ir_tarval *do_computed_value_Div(const ir_node *div)
+{
+ const ir_node *a = get_Div_left(div);
+ const ir_node *b = get_Div_right(div);
+ const ir_mode *mode = get_Div_resmode(div);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb;
const ir_node *dummy;
- /* Compute c1 / c2 or 0 / a, a != 0 */
- if (tarval_is_null(ta) && value_not_zero(b, &dummy))
- return ta; /* 0 / b == 0 */
+ /* cannot optimize 0 / b = 0 because of NaN */
+ if (!mode_is_float(mode)) {
+ if (tarval_is_null(ta) && value_not_zero(b, &dummy))
+ return ta; /* 0 / b == 0 if b != 0 */
+ }
tb = value_of(b);
if (ta != tarval_bad && tb != tarval_bad)
return tarval_div(ta, tb);
* Calculate the value of an integer Mod of two nodes.
* Special case: a % 1
*/
-static tarval *do_computed_value_Mod(const ir_node *a, const ir_node *b) {
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+static ir_tarval *do_computed_value_Mod(const ir_node *a, const ir_node *b)
+{
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
/* Compute a % 1 or c1 % c2 */
if (tarval_is_one(tb))
return tarval_bad;
} /* do_computed_value_Mod */
-/**
- * Return the value of a Proj(DivMod).
- */
-static tarval *computed_value_Proj_DivMod(const ir_node *n) {
- long proj_nr = get_Proj_proj(n);
-
- /* compute either the Div or the Mod part */
- if (proj_nr == pn_DivMod_res_div) {
- const ir_node *a = get_Proj_pred(n);
- return do_computed_value_Div(get_DivMod_left(a), get_DivMod_right(a));
- } else if (proj_nr == pn_DivMod_res_mod) {
- const ir_node *a = get_Proj_pred(n);
- return do_computed_value_Mod(get_DivMod_left(a), get_DivMod_right(a));
- }
- return tarval_bad;
-} /* computed_value_Proj_DivMod */
-
/**
* Return the value of a Proj(Div).
*/
-static tarval *computed_value_Proj_Div(const ir_node *n) {
+static ir_tarval *computed_value_Proj_Div(const ir_node *n)
+{
long proj_nr = get_Proj_proj(n);
+ if (proj_nr != pn_Div_res)
+ return tarval_bad;
- if (proj_nr == pn_Div_res) {
- const ir_node *a = get_Proj_pred(n);
- return do_computed_value_Div(get_Div_left(a), get_Div_right(a));
- }
- return tarval_bad;
+ return do_computed_value_Div(get_Proj_pred(n));
} /* computed_value_Proj_Div */
/**
* Return the value of a Proj(Mod).
*/
-static tarval *computed_value_Proj_Mod(const ir_node *n) {
+static ir_tarval *computed_value_Proj_Mod(const ir_node *n)
+{
long proj_nr = get_Proj_proj(n);
if (proj_nr == pn_Mod_res) {
- const ir_node *a = get_Proj_pred(n);
- return do_computed_value_Mod(get_Mod_left(a), get_Mod_right(a));
+ const ir_node *mod = get_Proj_pred(n);
+ return do_computed_value_Mod(get_Mod_left(mod), get_Mod_right(mod));
}
return tarval_bad;
} /* computed_value_Proj_Mod */
-/**
- * Return the value of a Proj(Quot).
- */
-static tarval *computed_value_Proj_Quot(const ir_node *n) {
- long proj_nr = get_Proj_proj(n);
-
- if (proj_nr == pn_Quot_res) {
- const ir_node *a = get_Proj_pred(n);
- return do_computed_value_Quot(get_Quot_left(a), get_Quot_right(a));
- }
- return tarval_bad;
-} /* computed_value_Proj_Quot */
-
/**
* Return the value of a Proj.
*/
-static tarval *computed_value_Proj(const ir_node *proj) {
+static ir_tarval *computed_value_Proj(const ir_node *proj)
+{
ir_node *n = get_Proj_pred(proj);
if (n->op->ops.computed_value_Proj != NULL)
*
* @param n The node this should be evaluated
*/
-tarval *computed_value(const ir_node *n) {
+ir_tarval *computed_value(const ir_node *n)
+{
+ vrp_attr *vrp = vrp_get_info(n);
+ if (vrp && vrp->valid && tarval_cmp(vrp->bits_set, vrp->bits_not_set) == ir_relation_equal) {
+ return vrp->bits_set;
+ }
if (n->op->ops.computed_value)
return n->op->ops.computed_value(n);
return tarval_bad;
break
switch (code) {
- CASE(Const);
- CASE(SymConst);
CASE(Add);
- CASE(Sub);
- CASE(Carry);
+ CASE(And);
CASE(Borrow);
+ CASE(Carry);
+ CASE(Cmp);
+ CASE(Confirm);
+ CASE(Const);
+ CASE(Conv);
+ CASE(Eor);
CASE(Minus);
CASE(Mul);
- CASE(Abs);
- CASE(And);
- CASE(Or);
- CASE(Eor);
+ CASE(Mux);
CASE(Not);
+ CASE(Or);
+ CASE(Proj);
+ CASE(Rotl);
CASE(Shl);
CASE(Shr);
CASE(Shrs);
- CASE(Rotl);
- CASE(Conv);
- CASE(Mux);
- CASE(Confirm);
- CASE_PROJ(Cmp);
- CASE_PROJ(DivMod);
+ CASE(Sub);
+ CASE(SymConst);
CASE_PROJ(Div);
CASE_PROJ(Mod);
- CASE_PROJ(Quot);
- CASE(Proj);
default:
- /* leave NULL */;
+ /* leave NULL */
+ break;
}
return ops;
{
ir_node *oldn = n;
int n_preds;
+ ir_graph *irg;
/* don't optimize dead or labeled blocks */
- if (is_Block_dead(n) || has_Block_label(n))
+ if (is_Block_dead(n) || has_Block_entity(n))
return n;
n_preds = get_Block_n_cfgpreds(n);
calls the optimization. */
assert(get_Block_matured(n));
+ irg = get_irn_irg(n);
+
/* Straightening: a single entry Block following a single exit Block
can be merged, if it is not the Start block. */
/* !!! Beware, all Phi-nodes of n must have been optimized away.
/* Jmp jumps into the block it is in -- deal self cycle. */
n = set_Block_dead(n);
DBG_OPT_DEAD_BLOCK(oldn, n);
- } else if (get_opt_control_flow_straightening()) {
+ } else {
n = predblock;
DBG_OPT_STG(oldn, n);
}
DBG_OPT_DEAD_BLOCK(oldn, n);
}
}
- } else if ((n_preds == 2) &&
- (get_opt_control_flow_weak_simplification())) {
+ } else if (n_preds == 2) {
/* Test whether Cond jumps twice to this block
* The more general case which more than 2 predecessors is handles
* in optimize_cf(), we handle only this special case for speed here.
}
}
} else if (get_opt_unreachable_code() &&
- (n != get_irg_start_block(current_ir_graph)) &&
- (n != get_irg_end_block(current_ir_graph)) ) {
+ (n != get_irg_start_block(irg)) &&
+ (n != get_irg_end_block(irg))) {
int i;
/* If all inputs are dead, this block is dead too, except if it is
* Returns a equivalent node for a Jmp, a Bad :-)
* Of course this only happens if the Block of the Jmp is dead.
*/
-static ir_node *equivalent_node_Jmp(ir_node *n) {
+static ir_node *equivalent_node_Jmp(ir_node *n)
+{
ir_node *oldn = n;
/* unreachable code elimination */
if (is_Block_dead(get_nodes_block(n))) {
- n = get_irg_bad(current_ir_graph);
+ ir_graph *irg = get_irn_irg(n);
+ n = get_irg_bad(irg);
DBG_OPT_DEAD_BLOCK(oldn, n);
}
return n;
* Optimize operations that are commutative and have neutral 0,
* so a op 0 = 0 op a = a.
*/
-static ir_node *equivalent_node_neutral_zero(ir_node *n) {
+static ir_node *equivalent_node_neutral_zero(ir_node *n)
+{
ir_node *oldn = n;
ir_node *a = get_binop_left(n);
ir_node *b = get_binop_right(n);
- tarval *tv;
+ ir_tarval *tv;
ir_node *on;
/* After running compute_node there is only one constant predecessor.
/**
* Eor is commutative and has neutral 0.
*/
-static ir_node *equivalent_node_Eor(ir_node *n) {
+static ir_node *equivalent_node_Eor(ir_node *n)
+{
ir_node *oldn = n;
ir_node *a;
ir_node *b;
* Beware: The Mode of an Add may be different than the mode of its
* predecessors, so we could not return a predecessors in all cases.
*/
-static ir_node *equivalent_node_Add(ir_node *n) {
+static ir_node *equivalent_node_Add(ir_node *n)
+{
ir_node *oldn = n;
ir_node *left, *right;
ir_mode *mode = get_irn_mode(n);
return n;
/* for FP these optimizations are only allowed if fp_strict_algebraic is disabled */
- if (mode_is_float(mode) && (get_irg_fp_model(current_ir_graph) & fp_strict_algebraic))
- return n;
+ if (mode_is_float(mode)) {
+ ir_graph *irg = get_irn_irg(n);
+ if (get_irg_fp_model(irg) & fp_strict_algebraic)
+ return n;
+ }
left = get_Add_left(n);
right = get_Add_right(n);
* optimize operations that are not commutative but have neutral 0 on left,
* so a op 0 = a.
*/
-static ir_node *equivalent_node_left_zero(ir_node *n) {
+static ir_node *equivalent_node_left_zero(ir_node *n)
+{
ir_node *oldn = n;
- ir_node *a = get_binop_left(n);
- ir_node *b = get_binop_right(n);
- tarval *tb = value_of(b);
+ ir_node *a = get_binop_left(n);
+ ir_node *b = get_binop_right(n);
+ ir_tarval *tb = value_of(b);
if (tarval_is_null(tb)) {
n = a;
* Beware: The Mode of a Sub may be different than the mode of its
* predecessors, so we could not return a predecessors in all cases.
*/
-static ir_node *equivalent_node_Sub(ir_node *n) {
- ir_node *oldn = n;
- ir_node *b;
- ir_mode *mode = get_irn_mode(n);
- tarval *tb;
+static ir_node *equivalent_node_Sub(ir_node *n)
+{
+ ir_node *oldn = n;
+ ir_node *b;
+ ir_mode *mode = get_irn_mode(n);
+ ir_tarval *tb;
/* for FP these optimizations are only allowed if fp_strict_algebraic is disabled */
- if (mode_is_float(mode) && (get_irg_fp_model(current_ir_graph) & fp_strict_algebraic))
- return n;
+ if (mode_is_float(mode)) {
+ ir_graph *irg = get_irn_irg(n);
+ if (get_irg_fp_model(irg) & fp_strict_algebraic)
+ return n;
+ }
b = get_Sub_right(n);
tb = value_of(b);
* We handle it anyway here but the better way would be a
* flag. This would be needed for Pascal for instance.
*/
-static ir_node *equivalent_node_idempotent_unop(ir_node *n) {
+static ir_node *equivalent_node_idempotent_unop(ir_node *n)
+{
ir_node *oldn = n;
ir_node *pred = get_unop_op(n);
/**
* Optimize a * 1 = 1 * a = a.
*/
-static ir_node *equivalent_node_Mul(ir_node *n) {
+static ir_node *equivalent_node_Mul(ir_node *n)
+{
ir_node *oldn = n;
ir_node *a = get_Mul_left(n);
/* we can handle here only the n * n = n bit cases */
if (get_irn_mode(n) == get_irn_mode(a)) {
- ir_node *b = get_Mul_right(n);
- tarval *tv;
+ ir_node *b = get_Mul_right(n);
+ ir_tarval *tv;
/*
* Mul is commutative and has again an other neutral element.
/**
* Use algebraic simplification a | a = a | 0 = 0 | a = a.
*/
-static ir_node *equivalent_node_Or(ir_node *n) {
+static ir_node *equivalent_node_Or(ir_node *n)
+{
ir_node *oldn = n;
- ir_node *a = get_Or_left(n);
- ir_node *b = get_Or_right(n);
- tarval *tv;
+ ir_node *a = get_Or_left(n);
+ ir_node *b = get_Or_right(n);
+ ir_tarval *tv;
if (a == b) {
n = a; /* Or has it's own neutral element */
/**
* Optimize a & 0b1...1 = 0b1...1 & a = a & a = (a|X) & a = a.
*/
-static ir_node *equivalent_node_And(ir_node *n) {
+static ir_node *equivalent_node_And(ir_node *n)
+{
ir_node *oldn = n;
- ir_node *a = get_And_left(n);
- ir_node *b = get_And_right(n);
- tarval *tv;
+ ir_node *a = get_And_left(n);
+ ir_node *b = get_And_right(n);
+ ir_tarval *tv;
if (a == b) {
n = a; /* And has it's own neutral element */
/**
* Try to remove useless Conv's:
*/
-static ir_node *equivalent_node_Conv(ir_node *n) {
+static ir_node *equivalent_node_Conv(ir_node *n)
+{
ir_node *oldn = n;
ir_node *a = get_Conv_op(n);
if (get_Conv_strict(n)) {
ir_node *p = a;
- /* neither Minus nor Abs nor Confirm change the precision,
+ /* neither Minus nor Confirm change the precision,
so we can "look-through" */
for (;;) {
if (is_Minus(p)) {
p = get_Minus_op(p);
- } else if (is_Abs(p)) {
- p = get_Abs_op(p);
} else if (is_Confirm(p)) {
p = get_Confirm_value(p);
} else {
}
if (is_Conv(p) && get_Conv_strict(p)) {
/* we known already, that a_mode == n_mode, and neither
- Abs nor Minus change the mode, so the second Conv
+ Minus change the mode, so the second Conv
can be kicked */
assert(get_irn_mode(p) == n_mode);
n = a;
return n;
} /* equivalent_node_Conv */
-/**
- * A Cast may be removed if the type of the previous node
- * is already the type of the Cast.
- */
-static ir_node *equivalent_node_Cast(ir_node *n) {
- ir_node *oldn = n;
- ir_node *pred = get_Cast_op(n);
-
- if (get_irn_type(pred) == get_Cast_type(n)) {
- n = pred;
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_CAST);
- }
- return n;
-} /* equivalent_node_Cast */
-
/**
* - fold Phi-nodes, iff they have only one predecessor except
* themselves.
*/
-static ir_node *equivalent_node_Phi(ir_node *n) {
+static ir_node *equivalent_node_Phi(ir_node *n)
+{
int i, n_preds;
ir_node *oldn = n;
ir_node *block;
ir_node *first_val = NULL; /* to shutup gcc */
- if (!get_opt_normalize()) return n;
+ if (!get_opt_optimize() &&
+ get_irg_phase_state(get_irn_irg(n)) != phase_building)
+ return n;
n_preds = get_Phi_n_preds(n);
block = get_nodes_block(n);
- if (is_Block_dead(block)) /* Control dead */
- return get_irg_bad(current_ir_graph);
+ /* Control dead */
+ if (is_Block_dead(block)) {
+ ir_graph *irg = get_irn_irg(n);
+ return get_irg_bad(irg);
+ }
if (n_preds == 0) return n; /* Phi of dead Region without predecessors. */
}
if (i >= n_preds) {
+ ir_graph *irg = get_irn_irg(n);
/* A totally Bad or self-referencing Phi (we didn't break the above loop) */
- return get_irg_bad(current_ir_graph);
+ return get_irg_bad(irg);
}
/* search for rest of inputs, determine if any of these
}
}
- if (i >= n_preds) {
+ if (i >= n_preds && !is_Dummy(first_val)) {
/* Fold, if no multiple distinct non-self-referencing inputs */
n = first_val;
DBG_OPT_PHI(oldn, n);
* - fold Sync-nodes, iff they have only one predecessor except
* themselves.
*/
-static ir_node *equivalent_node_Sync(ir_node *n) {
+static ir_node *equivalent_node_Sync(ir_node *n)
+{
int arity = get_Sync_n_preds(n);
int i;
}
}
- if (arity == 0) return get_irg_bad(current_ir_graph);
+ if (arity == 0) {
+ ir_graph *irg = get_irn_irg(n);
+ return get_irg_bad(irg);
+ }
if (arity == 1) return get_Sync_pred(n, 0);
return n;
} /* equivalent_node_Sync */
/**
* Optimize Proj(Tuple).
*/
-static ir_node *equivalent_node_Proj_Tuple(ir_node *proj) {
+static ir_node *equivalent_node_Proj_Tuple(ir_node *proj)
+{
ir_node *oldn = proj;
ir_node *tuple = get_Proj_pred(proj);
/**
* Optimize a / 1 = a.
*/
-static ir_node *equivalent_node_Proj_Div(ir_node *proj) {
- ir_node *oldn = proj;
- ir_node *div = get_Proj_pred(proj);
- ir_node *b = get_Div_right(div);
- tarval *tb = value_of(b);
+static ir_node *equivalent_node_Proj_Div(ir_node *proj)
+{
+ ir_node *oldn = proj;
+ ir_node *div = get_Proj_pred(proj);
+ ir_node *b = get_Div_right(div);
+ ir_tarval *tb = value_of(b);
/* Div is not commutative. */
if (tarval_is_one(tb)) { /* div(x, 1) == x */
return proj;
} /* equivalent_node_Proj_Div */
-/**
- * Optimize a / 1.0 = a.
- */
-static ir_node *equivalent_node_Proj_Quot(ir_node *proj) {
- ir_node *oldn = proj;
- ir_node *quot = get_Proj_pred(proj);
- ir_node *b = get_Quot_right(quot);
- tarval *tb = value_of(b);
-
- /* Div is not commutative. */
- if (tarval_is_one(tb)) { /* Quot(x, 1) == x */
- switch (get_Proj_proj(proj)) {
- case pn_Quot_M:
- proj = get_Quot_mem(quot);
- DBG_OPT_ALGSIM0(oldn, proj, FS_OPT_NEUTRAL_1);
- return proj;
-
- case pn_Quot_res:
- proj = get_Quot_left(quot);
- DBG_OPT_ALGSIM0(oldn, proj, FS_OPT_NEUTRAL_1);
- return proj;
-
- default:
- /* we cannot replace the exception Proj's here, this is done in
- transform_node_Proj_Quot() */
- return proj;
- }
- }
- return proj;
-} /* equivalent_node_Proj_Quot */
-
-/**
- * Optimize a / 1 = a.
- */
-static ir_node *equivalent_node_Proj_DivMod(ir_node *proj) {
- ir_node *oldn = proj;
- ir_node *divmod = get_Proj_pred(proj);
- ir_node *b = get_DivMod_right(divmod);
- tarval *tb = value_of(b);
-
- /* Div is not commutative. */
- if (tarval_is_one(tb)) { /* div(x, 1) == x */
- switch (get_Proj_proj(proj)) {
- case pn_DivMod_M:
- proj = get_DivMod_mem(divmod);
- DBG_OPT_ALGSIM0(oldn, proj, FS_OPT_NEUTRAL_1);
- return proj;
-
- case pn_DivMod_res_div:
- proj = get_DivMod_left(divmod);
- DBG_OPT_ALGSIM0(oldn, proj, FS_OPT_NEUTRAL_1);
- return proj;
-
- default:
- /* we cannot replace the exception Proj's here, this is done in
- transform_node_Proj_DivMod().
- Note further that the pn_DivMod_res_div case is handled in
- computed_value_Proj(). */
- return proj;
- }
- }
- return proj;
-} /* equivalent_node_Proj_DivMod */
-
/**
* Optimize CopyB(mem, x, x) into a Nop.
*/
-static ir_node *equivalent_node_Proj_CopyB(ir_node *proj) {
+static ir_node *equivalent_node_Proj_CopyB(ir_node *proj)
+{
ir_node *oldn = proj;
ir_node *copyb = get_Proj_pred(proj);
ir_node *a = get_CopyB_dst(copyb);
if (a == b) {
/* Turn CopyB into a tuple (mem, jmp, bad, bad) */
switch (get_Proj_proj(proj)) {
- case pn_CopyB_M_regular:
+ case pn_CopyB_M:
proj = get_CopyB_mem(copyb);
DBG_OPT_ALGSIM0(oldn, proj, FS_OPT_NOP);
break;
- case pn_CopyB_M_except:
- case pn_CopyB_X_except:
+ case pn_CopyB_X_except: {
+ ir_graph *irg = get_irn_irg(proj);
DBG_OPT_EXC_REM(proj);
- proj = get_irg_bad(current_ir_graph);
+ proj = get_irg_bad(irg);
break;
}
+ }
}
return proj;
} /* equivalent_node_Proj_CopyB */
/**
* Optimize Bounds(idx, idx, upper) into idx.
*/
-static ir_node *equivalent_node_Proj_Bound(ir_node *proj) {
+static ir_node *equivalent_node_Proj_Bound(ir_node *proj)
+{
ir_node *oldn = proj;
ir_node *bound = get_Proj_pred(proj);
ir_node *idx = get_Bound_index(bound);
ret_tuple = 1;
else if (is_Bound(pred)) {
/*
- * idx was Bounds checked in the same MacroBlock previously,
- * it is still valid if lower <= pred_lower && pred_upper <= upper.
+ * idx was Bounds checked previously, it is still valid if
+ * lower <= pred_lower && pred_upper <= upper.
*/
ir_node *lower = get_Bound_lower(bound);
ir_node *upper = get_Bound_upper(bound);
if (get_Bound_lower(pred) == lower &&
- get_Bound_upper(pred) == upper &&
- get_irn_MacroBlock(bound) == get_irn_MacroBlock(pred)) {
+ get_Bound_upper(pred) == upper) {
/*
* One could expect that we simply return the previous
* Bound here. However, this would be wrong, as we could
DBG_OPT_EXC_REM(proj);
proj = get_Bound_mem(bound);
break;
- case pn_Bound_X_except:
+ case pn_Bound_X_except: {
+ ir_graph *irg = get_irn_irg(proj);
DBG_OPT_EXC_REM(proj);
- proj = get_irg_bad(current_ir_graph);
+ proj = get_irg_bad(irg);
break;
+ }
case pn_Bound_res:
proj = idx;
DBG_OPT_ALGSIM0(oldn, proj, FS_OPT_NOP);
break;
default:
/* cannot optimize pn_Bound_X_regular, handled in transform ... */
- ;
+ break;
}
}
return proj;
/**
* Optimize an Exception Proj(Load) with a non-null address.
*/
-static ir_node *equivalent_node_Proj_Load(ir_node *proj) {
+static ir_node *equivalent_node_Proj_Load(ir_node *proj)
+{
if (get_opt_ldst_only_null_ptr_exceptions()) {
if (get_irn_mode(proj) == mode_X) {
ir_node *load = get_Proj_pred(proj);
if (value_not_null(addr, &confirm)) {
if (get_Proj_proj(proj) == pn_Load_X_except) {
+ ir_graph *irg = get_irn_irg(proj);
DBG_OPT_EXC_REM(proj);
- return get_irg_bad(current_ir_graph);
+ return get_irg_bad(irg);
}
}
}
/**
* Optimize an Exception Proj(Store) with a non-null address.
*/
-static ir_node *equivalent_node_Proj_Store(ir_node *proj) {
+static ir_node *equivalent_node_Proj_Store(ir_node *proj)
+{
if (get_opt_ldst_only_null_ptr_exceptions()) {
if (get_irn_mode(proj) == mode_X) {
ir_node *store = get_Proj_pred(proj);
if (value_not_null(addr, &confirm)) {
if (get_Proj_proj(proj) == pn_Store_X_except) {
+ ir_graph *irg = get_irn_irg(proj);
DBG_OPT_EXC_REM(proj);
- return get_irg_bad(current_ir_graph);
+ return get_irg_bad(irg);
}
}
}
* Does all optimizations on nodes that must be done on it's Proj's
* because of creating new nodes.
*/
-static ir_node *equivalent_node_Proj(ir_node *proj) {
+static ir_node *equivalent_node_Proj(ir_node *proj)
+{
ir_node *n = get_Proj_pred(proj);
if (get_irn_mode(proj) == mode_X) {
if (is_Block_dead(get_nodes_block(n))) {
/* Remove dead control flow -- early gigo(). */
- return get_irg_bad(current_ir_graph);
+ ir_graph *irg = get_irn_irg(proj);
+ return get_irg_bad(irg);
}
}
if (n->op->ops.equivalent_node_Proj)
/**
* Remove Id's.
*/
-static ir_node *equivalent_node_Id(ir_node *n) {
+static ir_node *equivalent_node_Id(ir_node *n)
+{
ir_node *oldn = n;
do {
*/
static ir_node *equivalent_node_Mux(ir_node *n)
{
- ir_node *oldn = n, *sel = get_Mux_sel(n);
- tarval *ts = value_of(sel);
+ ir_node *oldn = n, *sel = get_Mux_sel(n);
+ ir_node *n_t, *n_f;
+ ir_tarval *ts = value_of(sel);
/* Mux(true, f, t) == t */
if (ts == tarval_b_true) {
n = get_Mux_true(n);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_C);
+ return n;
}
/* Mux(false, f, t) == f */
- else if (ts == tarval_b_false) {
+ if (ts == tarval_b_false) {
n = get_Mux_false(n);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_C);
+ return n;
+ }
+ n_t = get_Mux_true(n);
+ n_f = get_Mux_false(n);
+
+ /* Mux(v, x, T) == x */
+ if (is_Unknown(n_f)) {
+ n = n_t;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_EQ);
+ return n;
+ }
+ /* Mux(v, T, x) == x */
+ if (is_Unknown(n_t)) {
+ n = n_f;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_EQ);
+ return n;
}
+
/* Mux(v, x, x) == x */
- else if (get_Mux_false(n) == get_Mux_true(n)) {
- n = get_Mux_true(n);
+ if (n_t == n_f) {
+ n = n_t;
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_EQ);
+ return n;
}
- else if (is_Proj(sel) && !mode_honor_signed_zeros(get_irn_mode(n))) {
- ir_node *cmp = get_Proj_pred(sel);
- long proj_nr = get_Proj_proj(sel);
- ir_node *f = get_Mux_false(n);
- ir_node *t = get_Mux_true(n);
+ if (is_Cmp(sel) && !mode_honor_signed_zeros(get_irn_mode(n))) {
+ ir_relation relation = get_Cmp_relation(sel);
+ ir_node *f = get_Mux_false(n);
+ ir_node *t = get_Mux_true(n);
/*
* Note further that these optimization work even for floating point
* with NaN's because -NaN == NaN.
* However, if +0 and -0 is handled differently, we cannot use the first one.
*/
- if (is_Cmp(cmp)) {
- ir_node *const cmp_l = get_Cmp_left(cmp);
- ir_node *const cmp_r = get_Cmp_right(cmp);
-
- switch (proj_nr) {
- case pn_Cmp_Eq:
- if ((cmp_l == t && cmp_r == f) || /* Mux(t == f, t, f) -> f */
- (cmp_l == f && cmp_r == t)) { /* Mux(f == t, t, f) -> f */
- n = f;
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
- return n;
- }
- break;
+ ir_node *const cmp_l = get_Cmp_left(sel);
+ ir_node *const cmp_r = get_Cmp_right(sel);
+
+ switch (relation) {
+ case ir_relation_equal:
+ if ((cmp_l == t && cmp_r == f) || /* Mux(t == f, t, f) -> f */
+ (cmp_l == f && cmp_r == t)) { /* Mux(f == t, t, f) -> f */
+ n = f;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
+ return n;
+ }
+ break;
- case pn_Cmp_Lg:
- case pn_Cmp_Ne:
- if ((cmp_l == t && cmp_r == f) || /* Mux(t != f, t, f) -> t */
- (cmp_l == f && cmp_r == t)) { /* Mux(f != t, t, f) -> t */
- n = t;
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
- return n;
- }
- break;
+ case ir_relation_less_greater:
+ case ir_relation_unordered_less_greater:
+ if ((cmp_l == t && cmp_r == f) || /* Mux(t != f, t, f) -> t */
+ (cmp_l == f && cmp_r == t)) { /* Mux(f != t, t, f) -> t */
+ n = t;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
+ return n;
}
+ break;
+ default:
+ break;
+ }
- /*
- * Note: normalization puts the constant on the right side,
- * so we check only one case.
- */
- if (cmp_l == t && tarval_is_null(value_of(cmp_r))) {
- /* Mux(t CMP 0, X, t) */
- if (is_Minus(f) && get_Minus_op(f) == t) {
- /* Mux(t CMP 0, -t, t) */
- if (proj_nr == pn_Cmp_Eq) {
- /* Mux(t == 0, -t, t) ==> -t */
- n = f;
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
- } else if (proj_nr == pn_Cmp_Lg || proj_nr == pn_Cmp_Ne) {
- /* Mux(t != 0, -t, t) ==> t */
- n = t;
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
- }
+ /*
+ * Note: normalization puts the constant on the right side,
+ * so we check only one case.
+ */
+ if (cmp_l == t && tarval_is_null(value_of(cmp_r))) {
+ /* Mux(t CMP 0, X, t) */
+ if (is_Minus(f) && get_Minus_op(f) == t) {
+ /* Mux(t CMP 0, -t, t) */
+ if (relation == ir_relation_equal) {
+ /* Mux(t == 0, -t, t) ==> -t */
+ n = f;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
+ } else if (relation == ir_relation_less_greater || relation == ir_relation_unordered_less_greater) {
+ /* Mux(t != 0, -t, t) ==> t */
+ n = t;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_TRANSFORM);
}
}
}
}
+
return n;
-} /* equivalent_node_Mux */
+}
/**
* Remove Confirm nodes if setting is on.
* Replace Confirms(x, '=', Constlike) by Constlike.
*/
-static ir_node *equivalent_node_Confirm(ir_node *n) {
- ir_node *pred = get_Confirm_value(n);
- pn_Cmp pnc = get_Confirm_cmp(n);
+static ir_node *equivalent_node_Confirm(ir_node *n)
+{
+ ir_node *pred = get_Confirm_value(n);
+ ir_relation relation = get_Confirm_relation(n);
- while (is_Confirm(pred) && pnc == get_Confirm_cmp(pred)) {
+ while (is_Confirm(pred) && relation == get_Confirm_relation(pred)) {
/*
* rare case: two identical Confirms one after another,
* replace the second one with the first.
*/
n = pred;
pred = get_Confirm_value(n);
- pnc = get_Confirm_cmp(n);
}
- if (get_opt_remove_confirm())
- return get_Confirm_value(n);
return n;
}
* If a node returns a Tuple we can not just skip it. If the size of the
* in array fits, we transform n into a tuple (e.g., Div).
*/
-ir_node *equivalent_node(ir_node *n) {
+ir_node *equivalent_node(ir_node *n)
+{
if (n->op->ops.equivalent_node)
return n->op->ops.equivalent_node(n);
return n;
CASE(Or);
CASE(And);
CASE(Conv);
- CASE(Cast);
CASE(Phi);
CASE(Sync);
CASE_PROJ(Tuple);
CASE_PROJ(Div);
- CASE_PROJ(Quot);
- CASE_PROJ(DivMod);
CASE_PROJ(CopyB);
CASE_PROJ(Bound);
CASE_PROJ(Load);
CASE(Mux);
CASE(Confirm);
default:
- /* leave NULL */;
+ /* leave NULL */
+ break;
}
return ops;
* Returns non-zero if a node is a Phi node
* with all predecessors constant.
*/
-static int is_const_Phi(ir_node *n) {
+static int is_const_Phi(ir_node *n)
+{
int i;
if (! is_Phi(n) || get_irn_arity(n) == 0)
return 1;
} /* is_const_Phi */
-typedef tarval *(*tarval_sub_type)(tarval *a, tarval *b, ir_mode *mode);
-typedef tarval *(*tarval_binop_type)(tarval *a, tarval *b);
+typedef ir_tarval *(*tarval_sub_type)(ir_tarval *a, ir_tarval *b, ir_mode *mode);
+typedef ir_tarval *(*tarval_binop_type)(ir_tarval *a, ir_tarval *b);
+
+/**
+ * in reality eval_func should be tarval (*eval_func)() but incomplete
+ * declarations are bad style and generate noisy warnings
+ */
+typedef void (*eval_func)(void);
/**
* Wrapper for the tarval binop evaluation, tarval_sub has one more parameter.
*/
-static tarval *do_eval(tarval *(*eval)(), tarval *a, tarval *b, ir_mode *mode) {
- if (eval == tarval_sub) {
+static ir_tarval *do_eval(eval_func eval, ir_tarval *a, ir_tarval *b, ir_mode *mode)
+{
+ if (eval == (eval_func) tarval_sub) {
tarval_sub_type func = (tarval_sub_type)eval;
return func(a, b, mode);
*
* @return a new Phi node if the conversion was successful, NULL else
*/
-static ir_node *apply_binop_on_phi(ir_node *phi, tarval *other, tarval *(*eval)(), ir_mode *mode, int left) {
- tarval *tv;
- void **res;
- ir_node *pred;
- ir_graph *irg;
- int i, n = get_irn_arity(phi);
+static ir_node *apply_binop_on_phi(ir_node *phi, ir_tarval *other, eval_func eval, ir_mode *mode, int left)
+{
+ ir_tarval *tv;
+ void **res;
+ ir_node *pred;
+ ir_graph *irg;
+ int i, n = get_irn_arity(phi);
NEW_ARR_A(void *, res, n);
if (left) {
res[i] = tv;
}
}
- irg = current_ir_graph;
+ irg = get_irn_irg(phi);
for (i = 0; i < n; ++i) {
pred = get_irn_n(phi, i);
- res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+ res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
}
- return new_r_Phi(irg, get_nodes_block(phi), n, (ir_node **)res, mode);
+ return new_r_Phi(get_nodes_block(phi), n, (ir_node **)res, mode);
} /* apply_binop_on_phi */
/**
*
* @return a new Phi node if the conversion was successful, NULL else
*/
-static ir_node *apply_binop_on_2_phis(ir_node *a, ir_node *b, tarval *(*eval)(), ir_mode *mode) {
- tarval *tv_l, *tv_r, *tv;
+static ir_node *apply_binop_on_2_phis(ir_node *a, ir_node *b, eval_func eval, ir_mode *mode)
+{
+ ir_tarval *tv_l, *tv_r, *tv;
void **res;
ir_node *pred;
ir_graph *irg;
}
res[i] = tv;
}
- irg = current_ir_graph;
+ irg = get_irn_irg(a);
for (i = 0; i < n; ++i) {
pred = get_irn_n(a, i);
- res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+ res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
}
- return new_r_Phi(irg, get_nodes_block(a), n, (ir_node **)res, mode);
+ return new_r_Phi(get_nodes_block(a), n, (ir_node **)res, mode);
} /* apply_binop_on_2_phis */
/**
*
* @return a new Phi node if the conversion was successful, NULL else
*/
-static ir_node *apply_unop_on_phi(ir_node *phi, tarval *(*eval)(tarval *)) {
- tarval *tv;
+static ir_node *apply_unop_on_phi(ir_node *phi, ir_tarval *(*eval)(ir_tarval *))
+{
+ ir_tarval *tv;
void **res;
ir_node *pred;
ir_mode *mode;
res[i] = tv;
}
mode = get_irn_mode(phi);
- irg = current_ir_graph;
+ irg = get_irn_irg(phi);
for (i = 0; i < n; ++i) {
pred = get_irn_n(phi, i);
- res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+ res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
}
- return new_r_Phi(irg, get_nodes_block(phi), n, (ir_node **)res, mode);
+ return new_r_Phi(get_nodes_block(phi), n, (ir_node **)res, mode);
} /* apply_unop_on_phi */
/**
*
* @return a new Phi node if the conversion was successful, NULL else
*/
-static ir_node *apply_conv_on_phi(ir_node *phi, ir_mode *mode) {
- tarval *tv;
+static ir_node *apply_conv_on_phi(ir_node *phi, ir_mode *mode)
+{
+ ir_tarval *tv;
void **res;
ir_node *pred;
ir_graph *irg;
}
res[i] = tv;
}
- irg = current_ir_graph;
+ irg = get_irn_irg(phi);
for (i = 0; i < n; ++i) {
pred = get_irn_n(phi, i);
- res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+ res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
}
- return new_r_Phi(irg, get_nodes_block(phi), n, (ir_node **)res, mode);
+ return new_r_Phi(get_nodes_block(phi), n, (ir_node **)res, mode);
} /* apply_conv_on_phi */
/**
* SubP(P, ConvIs(Iu)), SubP(P, ConvIu(Is)).
* If possible, remove the Conv's.
*/
-static ir_node *transform_node_AddSub(ir_node *n) {
+static ir_node *transform_node_AddSub(ir_node *n)
+{
ir_mode *mode = get_irn_mode(n);
if (mode_is_reference(mode)) {
/* convert a AddP(P, *s) into AddP(P, *u) */
ir_mode *nm = get_reference_mode_unsigned_eq(mode);
- ir_node *pre = new_r_Conv(current_ir_graph, get_nodes_block(n), right, nm, 0);
+ ir_node *pre = new_r_Conv(get_nodes_block(n), right, nm);
set_binop_right(n, pre);
}
}
} /* transform_node_AddSub */
#define HANDLE_BINOP_PHI(eval, a, b, c, mode) \
+ do { \
c = NULL; \
if (is_Const(b) && is_const_Phi(a)) { \
/* check for Op(Phi, Const) */ \
if (c) { \
DBG_OPT_ALGSIM0(oldn, c, FS_OPT_CONST_PHI); \
return c; \
- }
+ } \
+ } while(0)
#define HANDLE_UNOP_PHI(eval, a, c) \
+ do { \
c = NULL; \
if (is_const_Phi(a)) { \
/* check for Op(Phi) */ \
DBG_OPT_ALGSIM0(oldn, c, FS_OPT_CONST_PHI); \
return c; \
} \
- }
+ } \
+ } while(0)
/**
* Do the AddSub optimization, then Transform
* Transform Add(a,-b) into Sub(a,b).
* Reassociation might fold this further.
*/
-static ir_node *transform_node_Add(ir_node *n) {
+static ir_node *transform_node_Add(ir_node *n)
+{
ir_mode *mode;
ir_node *a, *b, *c, *oldn = n;
+ vrp_attr *a_vrp, *b_vrp;
n = transform_node_AddSub(n);
if (mode_is_reference(mode)) {
ir_mode *lmode = get_irn_mode(a);
- if (is_Const(b) && is_Const_null(b) && mode_is_int(lmode)) {
+ if (is_Const(b) && is_Const_null(b) && mode_is_int(lmode)) {
/* an Add(a, NULL) is a hidden Conv */
dbg_info *dbg = get_irn_dbg_info(n);
- return new_rd_Conv(dbg, current_ir_graph, get_nodes_block(n), a, mode, 0);
+ return new_rd_Conv(dbg, get_nodes_block(n), a, mode);
}
}
- HANDLE_BINOP_PHI(tarval_add, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_add, a, b, c, mode);
/* for FP these optimizations are only allowed if fp_strict_algebraic is disabled */
- if (mode_is_float(mode) && (get_irg_fp_model(current_ir_graph) & fp_strict_algebraic))
- return n;
+ if (mode_is_float(mode)) {
+ ir_graph *irg = get_irn_irg(n);
+ if (get_irg_fp_model(irg) & fp_strict_algebraic)
+ return n;
+ }
if (mode_is_num(mode)) {
+ ir_graph *irg = get_irn_irg(n);
/* the following code leads to endless recursion when Mul are replaced by a simple instruction chain */
- if (!is_arch_dep_running() && a == b && mode_is_int(mode)) {
+ if (!is_irg_state(irg, IR_GRAPH_STATE_ARCH_DEP)
+ && a == b && mode_is_int(mode)) {
ir_node *block = get_nodes_block(n);
n = new_rd_Mul(
get_irn_dbg_info(n),
- current_ir_graph,
block,
a,
- new_Const_long(mode, 2),
+ new_r_Const_long(irg, mode, 2),
mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_A_A);
return n;
if (is_Minus(a)) {
n = new_rd_Sub(
get_irn_dbg_info(n),
- current_ir_graph,
get_nodes_block(n),
b,
get_Minus_op(a),
if (is_Minus(b)) {
n = new_rd_Sub(
get_irn_dbg_info(n),
- current_ir_graph,
get_nodes_block(n),
a,
get_Minus_op(b),
if (is_Const(b) && is_Const_one(b)) {
/* ~x + 1 = -x */
ir_node *blk = get_nodes_block(n);
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, op, mode);
+ n = new_rd_Minus(get_irn_dbg_info(n), blk, op, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_NOT_PLUS_1);
return n;
}
if (op == b) {
/* ~x + x = -1 */
- n = new_Const(get_mode_minus_one(mode));
+ n = new_r_Const(irg, get_mode_minus_one(mode));
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_X_NOT_X);
return n;
}
if (op == a) {
/* x + ~x = -1 */
- n = new_Const(get_mode_minus_one(mode));
+ n = new_r_Const(irg, get_mode_minus_one(mode));
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_X_NOT_X);
return n;
}
}
}
}
+
+ a_vrp = vrp_get_info(a);
+ b_vrp = vrp_get_info(b);
+
+ if (a_vrp && b_vrp) {
+ ir_tarval *c = tarval_and(a_vrp->bits_not_set, b_vrp->bits_not_set);
+
+ if (tarval_is_null(c)) {
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ return new_rd_Or(dbgi, get_nodes_block(n), a, b, mode);
+ }
+ }
return n;
} /* transform_node_Add */
/**
* returns -cnst or NULL if impossible
*/
-static ir_node *const_negate(ir_node *cnst) {
- tarval *tv = tarval_neg(get_Const_tarval(cnst));
- dbg_info *dbgi = get_irn_dbg_info(cnst);
- ir_graph *irg = get_irn_irg(cnst);
+static ir_node *const_negate(ir_node *cnst)
+{
+ ir_tarval *tv = tarval_neg(get_Const_tarval(cnst));
+ dbg_info *dbgi = get_irn_dbg_info(cnst);
+ ir_graph *irg = get_irn_irg(cnst);
if (tv == tarval_bad) return NULL;
return new_rd_Const(dbgi, irg, tv);
}
* Sub(x, Add(x, a)) -> -a
* Sub(x, Const) -> Add(x, -Const)
*/
-static ir_node *transform_node_Sub(ir_node *n) {
+static ir_node *transform_node_Sub(ir_node *n)
+{
ir_mode *mode;
ir_node *oldn = n;
ir_node *a, *b, *c;
if (is_Const(b) && is_Const_null(b) && mode_is_reference(lmode)) {
/* a Sub(a, NULL) is a hidden Conv */
dbg_info *dbg = get_irn_dbg_info(n);
- n = new_rd_Conv(dbg, current_ir_graph, get_nodes_block(n), a, mode, 0);
+ n = new_rd_Conv(dbg, get_nodes_block(n), a, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_TO_CONV);
return n;
}
get_Const_tarval(a) == get_mode_minus_one(mode)) {
/* -1 - x -> ~x */
dbg_info *dbg = get_irn_dbg_info(n);
- n = new_rd_Not(dbg, current_ir_graph, get_nodes_block(n), b, mode);
+ n = new_rd_Not(dbg, get_nodes_block(n), b, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_TO_NOT);
return n;
}
}
restart:
- HANDLE_BINOP_PHI(tarval_sub, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_sub, a, b, c, mode);
/* for FP these optimizations are only allowed if fp_strict_algebraic is disabled */
- if (mode_is_float(mode) && (get_irg_fp_model(current_ir_graph) & fp_strict_algebraic))
- return n;
+ if (mode_is_float(mode)) {
+ ir_graph *irg = get_irn_irg(n);
+ if (get_irg_fp_model(irg) & fp_strict_algebraic)
+ return n;
+ }
if (is_Const(b) && !mode_is_reference(get_irn_mode(b))) {
/* a - C -> a + (-C) */
if (cnst != NULL) {
ir_node *block = get_nodes_block(n);
dbg_info *dbgi = get_irn_dbg_info(n);
- ir_graph *irg = get_irn_irg(n);
- n = new_rd_Add(dbgi, irg, block, a, cnst, mode);
+ n = new_rd_Add(dbgi, block, a, cnst, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_TO_ADD);
return n;
}
}
if (is_Minus(a)) { /* (-a) - b -> -(a + b) */
- ir_graph *irg = current_ir_graph;
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
ir_node *left = get_Minus_op(a);
- ir_node *add = new_rd_Add(dbg, irg, block, left, b, mode);
+ ir_node *add = new_rd_Add(dbg, block, left, b, mode);
- n = new_rd_Minus(dbg, irg, block, add, mode);
+ n = new_rd_Minus(dbg, block, add, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_TO_ADD);
return n;
} else if (is_Minus(b)) { /* a - (-b) -> a + b */
- ir_graph *irg = current_ir_graph;
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
ir_node *right = get_Minus_op(b);
- n = new_rd_Add(dbg, irg, block, a, right, mode);
+ n = new_rd_Add(dbg, block, a, right, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_MINUS);
return n;
} else if (is_Sub(b)) {
/* a - (b - c) -> a + (c - b)
* -> (a - b) + c iff (b - c) is a pointer */
- ir_graph *irg = current_ir_graph;
dbg_info *s_dbg = get_irn_dbg_info(b);
- ir_node *s_block = get_nodes_block(b);
ir_node *s_left = get_Sub_left(b);
ir_node *s_right = get_Sub_right(b);
ir_mode *s_mode = get_irn_mode(b);
if (mode_is_reference(s_mode)) {
- ir_node *sub = new_rd_Sub(s_dbg, irg, s_block, a, s_left, mode);
+ ir_node *lowest_block = get_nodes_block(n); /* a and b are live here */
+ ir_node *sub = new_rd_Sub(s_dbg, lowest_block, a, s_left, mode);
dbg_info *a_dbg = get_irn_dbg_info(n);
- ir_node *a_block = get_nodes_block(n);
if (s_mode != mode)
- s_right = new_r_Conv(irg, a_block, s_right, mode, 0);
- n = new_rd_Add(a_dbg, irg, a_block, sub, s_right, mode);
+ s_right = new_r_Conv(lowest_block, s_right, mode);
+ n = new_rd_Add(a_dbg, lowest_block, sub, s_right, mode);
} else {
- ir_node *sub = new_rd_Sub(s_dbg, irg, s_block, s_right, s_left, s_mode);
+ ir_node *s_block = get_nodes_block(b);
+ ir_node *sub = new_rd_Sub(s_dbg, s_block, s_right, s_left, s_mode);
dbg_info *a_dbg = get_irn_dbg_info(n);
ir_node *a_block = get_nodes_block(n);
- n = new_rd_Add(a_dbg, irg, a_block, a, sub, mode);
+ n = new_rd_Add(a_dbg, a_block, a, sub, mode);
}
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_TO_ADD);
return n;
if (is_Const(m_right)) {
ir_node *cnst2 = const_negate(m_right);
if (cnst2 != NULL) {
- ir_graph *irg = current_ir_graph;
dbg_info *m_dbg = get_irn_dbg_info(b);
ir_node *m_block = get_nodes_block(b);
ir_node *m_left = get_Mul_left(b);
ir_mode *m_mode = get_irn_mode(b);
- ir_node *mul = new_rd_Mul(m_dbg, irg, m_block, m_left, cnst2, m_mode);
+ ir_node *mul = new_rd_Mul(m_dbg, m_block, m_left, cnst2, m_mode);
dbg_info *a_dbg = get_irn_dbg_info(n);
ir_node *a_block = get_nodes_block(n);
- n = new_rd_Add(a_dbg, irg, a_block, a, mul, mode);
+ n = new_rd_Add(a_dbg, a_block, a, mul, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_TO_ADD);
return n;
}
if (mode_is_num(mode) && mode == get_irn_mode(a) && is_Const(a) && is_Const_null(a)) {
n = new_rd_Minus(
get_irn_dbg_info(n),
- current_ir_graph,
get_nodes_block(n),
b,
mode);
if (left == b) {
if (mode != get_irn_mode(right)) {
/* This Sub is an effective Cast */
- right = new_r_Conv(get_irn_irg(n), get_nodes_block(n), right, mode, 0);
+ right = new_r_Conv(get_nodes_block(n), right, mode);
}
n = right;
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
return n;
} else if (right == b) {
if (mode != get_irn_mode(left)) {
- /* This Sub is an effective Cast */
- left = new_r_Conv(get_irn_irg(n), get_nodes_block(n), left, mode, 0);
+ /* This Sub is an effective Cast */
+ left = new_r_Conv(get_nodes_block(n), left, mode);
}
n = left;
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
if (left == a) {
ir_mode *r_mode = get_irn_mode(right);
- n = new_r_Minus(get_irn_irg(n), get_nodes_block(n), right, r_mode);
+ n = new_r_Minus(get_nodes_block(n), right, r_mode);
if (mode != r_mode) {
/* This Sub is an effective Cast */
- n = new_r_Conv(get_irn_irg(n), get_nodes_block(n), n, mode, 0);
+ n = new_r_Conv(get_nodes_block(n), n, mode);
}
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
return n;
} else if (right == a) {
ir_mode *l_mode = get_irn_mode(left);
- n = new_r_Minus(get_irn_irg(n), get_nodes_block(n), left, l_mode);
+ n = new_r_Minus(get_nodes_block(n), left, l_mode);
if (mode != l_mode) {
- /* This Sub is an effective Cast */
- n = new_r_Conv(get_irn_irg(n), get_nodes_block(n), n, mode, 0);
+ /* This Sub is an effective Cast */
+ n = new_r_Conv(get_nodes_block(n), n, mode);
}
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
return n;
ir_node *mb = get_Mul_right(a);
if (ma == b) {
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_nodes_block(n);
+ ir_graph *irg = get_irn_irg(n);
n = new_rd_Mul(
get_irn_dbg_info(n),
- current_ir_graph, blk,
+ blk,
ma,
new_rd_Sub(
get_irn_dbg_info(n),
- current_ir_graph, blk,
+ blk,
mb,
- new_Const_long(mode, 1),
+ new_r_Const(irg, get_mode_one(mode)),
mode),
mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_MUL_A_X_A);
return n;
} else if (mb == b) {
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_nodes_block(n);
+ ir_graph *irg = get_irn_irg(n);
n = new_rd_Mul(
get_irn_dbg_info(n),
- current_ir_graph, blk,
+ blk,
mb,
new_rd_Sub(
get_irn_dbg_info(n),
- current_ir_graph, blk,
+ blk,
ma,
- new_Const_long(mode, 1),
+ new_r_Const(irg, get_mode_one(mode)),
mode),
mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_MUL_A_X_A);
}
}
if (is_Sub(a)) { /* (x - y) - b -> x - (y + b) */
- ir_node *x = get_Sub_left(a);
+ ir_node *x = get_Sub_left(a);
ir_node *y = get_Sub_right(a);
ir_node *blk = get_nodes_block(n);
ir_mode *m_b = get_irn_mode(b);
return n;
}
- add = new_r_Add(current_ir_graph, blk, y, b, add_mode);
+ add = new_r_Add(blk, y, b, add_mode);
- n = new_rd_Sub(get_irn_dbg_info(n), current_ir_graph, blk, x, add, mode);
+ n = new_rd_Sub(get_irn_dbg_info(n), blk, x, add, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_SUB_X_Y_Z);
return n;
}
if (get_mode_arithmetic(mode) == irma_twos_complement) {
if (is_Const(a) && is_Not(b)) {
/* c - ~X = X + (c+1) */
- tarval *tv = get_Const_tarval(a);
+ ir_tarval *tv = get_Const_tarval(a);
tv = tarval_add(tv, get_mode_one(mode));
if (tv != tarval_bad) {
- ir_node *blk = get_nodes_block(n);
- ir_node *c = new_Const(tv);
- n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, blk, get_Not_op(b), c, mode);
+ ir_node *blk = get_nodes_block(n);
+ ir_graph *irg = get_irn_irg(n);
+ ir_node *c = new_r_Const(irg, tv);
+ n = new_rd_Add(get_irn_dbg_info(n), blk, get_Not_op(b), c, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_C_NOT_X);
return n;
}
* Several transformation done on n*n=2n bits mul.
* These transformations must be done here because new nodes may be produced.
*/
-static ir_node *transform_node_Mul2n(ir_node *n, ir_mode *mode) {
- ir_node *oldn = n;
- ir_node *a = get_Mul_left(n);
- ir_node *b = get_Mul_right(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
- ir_mode *smode = get_irn_mode(a);
+static ir_node *transform_node_Mul2n(ir_node *n, ir_mode *mode)
+{
+ ir_node *oldn = n;
+ ir_node *a = get_Mul_left(n);
+ ir_node *b = get_Mul_right(n);
+ ir_tarval *ta = value_of(a);
+ ir_tarval *tb = value_of(b);
+ ir_mode *smode = get_irn_mode(a);
if (ta == get_mode_one(smode)) {
/* (L)1 * (L)b = (L)b */
ir_node *blk = get_nodes_block(n);
- n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, b, mode, 0);
+ n = new_rd_Conv(get_irn_dbg_info(n), blk, b, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_NEUTRAL_1);
return n;
}
else if (ta == get_mode_minus_one(smode)) {
/* (L)-1 * (L)b = (L)b */
ir_node *blk = get_nodes_block(n);
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, b, smode);
- n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, n, mode, 0);
+ n = new_rd_Minus(get_irn_dbg_info(n), blk, b, smode);
+ n = new_rd_Conv(get_irn_dbg_info(n), blk, n, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
return n;
}
if (tb == get_mode_one(smode)) {
/* (L)a * (L)1 = (L)a */
ir_node *blk = get_irn_n(a, -1);
- n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, a, mode, 0);
+ n = new_rd_Conv(get_irn_dbg_info(n), blk, a, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_NEUTRAL_1);
return n;
}
else if (tb == get_mode_minus_one(smode)) {
/* (L)a * (L)-1 = (L)-a */
ir_node *blk = get_nodes_block(n);
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, a, smode);
- n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, blk, n, mode, 0);
+ n = new_rd_Minus(get_irn_dbg_info(n), blk, a, smode);
+ n = new_rd_Conv(get_irn_dbg_info(n), blk, n, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
return n;
}
* Do constant evaluation of Phi nodes.
* Do architecture dependent optimizations on Mul nodes
*/
-static ir_node *transform_node_Mul(ir_node *n) {
+static ir_node *transform_node_Mul(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_mode *mode = get_irn_mode(n);
ir_node *a = get_Mul_left(n);
if (mode != get_irn_mode(a))
return transform_node_Mul2n(n, mode);
- HANDLE_BINOP_PHI(tarval_mul, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_mul, a, b, c, mode);
if (mode_is_signed(mode)) {
ir_node *r = NULL;
else if (value_of(b) == get_mode_minus_one(mode))
r = a;
if (r) {
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), r, mode);
+ n = new_rd_Minus(get_irn_dbg_info(n), get_nodes_block(n), r, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
return n;
}
if (cnst != NULL) {
dbg_info *dbgi = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- n = new_rd_Mul(dbgi, current_ir_graph, block, get_Minus_op(a), cnst, mode);
+ n = new_rd_Mul(dbgi, block, get_Minus_op(a), cnst, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_1);
return n;
}
} else if (is_Minus(b)) { /* (-a) * (-b) -> a * b */
dbg_info *dbgi = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- n = new_rd_Mul(dbgi, current_ir_graph, block, get_Minus_op(a), get_Minus_op(b), mode);
+ n = new_rd_Mul(dbgi, block, get_Minus_op(a), get_Minus_op(b), mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS_MINUS);
return n;
} else if (is_Sub(b)) { /* (-a) * (b - c) -> a * (c - b) */
ir_node *sub_l = get_Sub_left(b);
ir_node *sub_r = get_Sub_right(b);
dbg_info *dbgi = get_irn_dbg_info(n);
- ir_graph *irg = current_ir_graph;
ir_node *block = get_nodes_block(n);
- ir_node *new_b = new_rd_Sub(dbgi, irg, block, sub_r, sub_l, mode);
- n = new_rd_Mul(dbgi, irg, block, get_Minus_op(a), new_b, mode);
+ ir_node *new_b = new_rd_Sub(dbgi, block, sub_r, sub_l, mode);
+ n = new_rd_Mul(dbgi, block, get_Minus_op(a), new_b, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS);
return n;
}
ir_node *sub_l = get_Sub_left(a);
ir_node *sub_r = get_Sub_right(a);
dbg_info *dbgi = get_irn_dbg_info(n);
- ir_graph *irg = current_ir_graph;
ir_node *block = get_nodes_block(n);
- ir_node *new_a = new_rd_Sub(dbgi, irg, block, sub_r, sub_l, mode);
- n = new_rd_Mul(dbgi, irg, block, new_a, get_Minus_op(b), mode);
+ ir_node *new_a = new_rd_Sub(dbgi, block, sub_r, sub_l, mode);
+ n = new_rd_Mul(dbgi, block, new_a, get_Minus_op(b), mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_MINUS);
return n;
}
+ } else if (is_Shl(a)) {
+ ir_node *const shl_l = get_Shl_left(a);
+ if (is_Const(shl_l) && is_Const_one(shl_l)) {
+ /* (1 << x) * b -> b << x */
+ dbg_info *const dbgi = get_irn_dbg_info(n);
+ ir_node *const block = get_nodes_block(n);
+ ir_node *const shl_r = get_Shl_right(a);
+ n = new_rd_Shl(dbgi, block, b, shl_r, mode);
+ // TODO add me DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_SHIFT);
+ return n;
+ }
+ } else if (is_Shl(b)) {
+ ir_node *const shl_l = get_Shl_left(b);
+ if (is_Const(shl_l) && is_Const_one(shl_l)) {
+ /* a * (1 << x) -> a << x */
+ dbg_info *const dbgi = get_irn_dbg_info(n);
+ ir_node *const block = get_nodes_block(n);
+ ir_node *const shl_r = get_Shl_right(b);
+ n = new_rd_Shl(dbgi, block, a, shl_r, mode);
+ // TODO add me DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_MUL_SHIFT);
+ return n;
+ }
}
if (get_mode_arithmetic(mode) == irma_ieee754) {
if (is_Const(a)) {
- tarval *tv = get_Const_tarval(a);
+ ir_tarval *tv = get_Const_tarval(a);
if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)
&& !tarval_is_negative(tv)) {
/* 2.0 * b = b + b */
- n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), b, b, mode);
+ n = new_rd_Add(get_irn_dbg_info(n), get_nodes_block(n), b, b, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_A_A);
return n;
}
}
else if (is_Const(b)) {
- tarval *tv = get_Const_tarval(b);
+ ir_tarval *tv = get_Const_tarval(b);
if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)
&& !tarval_is_negative(tv)) {
/* a * 2.0 = a + a */
- n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), a, a, mode);
+ n = new_rd_Add(get_irn_dbg_info(n), get_nodes_block(n), a, a, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_A_A);
return n;
}
/**
* Transform a Div Node.
*/
-static ir_node *transform_node_Div(ir_node *n) {
+static ir_node *transform_node_Div(ir_node *n)
+{
ir_mode *mode = get_Div_resmode(n);
ir_node *a = get_Div_left(n);
ir_node *b = get_Div_right(n);
- ir_node *value;
- tarval *tv;
+ ir_node *value = n;
+ const ir_node *dummy;
- if (is_Const(b) && is_const_Phi(a)) {
- /* check for Div(Phi, Const) */
- value = apply_binop_on_phi(a, get_Const_tarval(b), tarval_div, mode, 0);
- if (value) {
- DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
- goto make_tuple;
- }
- }
- else if (is_Const(a) && is_const_Phi(b)) {
- /* check for Div(Const, Phi) */
- value = apply_binop_on_phi(b, get_Const_tarval(a), tarval_div, mode, 1);
- if (value) {
- DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
- goto make_tuple;
- }
- }
- else if (is_const_Phi(a) && is_const_Phi(b)) {
- /* check for Div(Phi, Phi) */
- value = apply_binop_on_2_phis(a, b, tarval_div, mode);
- if (value) {
- DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
- goto make_tuple;
+ if (mode_is_int(mode)) {
+ if (is_Const(b) && is_const_Phi(a)) {
+ /* check for Div(Phi, Const) */
+ value = apply_binop_on_phi(a, get_Const_tarval(b), (eval_func) tarval_div, mode, 0);
+ if (value) {
+ DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
+ goto make_tuple;
+ }
+ } else if (is_Const(a) && is_const_Phi(b)) {
+ /* check for Div(Const, Phi) */
+ value = apply_binop_on_phi(b, get_Const_tarval(a), (eval_func) tarval_div, mode, 1);
+ if (value) {
+ DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
+ goto make_tuple;
+ }
+ } else if (is_const_Phi(a) && is_const_Phi(b)) {
+ /* check for Div(Phi, Phi) */
+ value = apply_binop_on_2_phis(a, b, (eval_func) tarval_div, mode);
+ if (value) {
+ DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
+ goto make_tuple;
+ }
}
- }
-
- value = n;
- tv = value_of(n);
- if (tv != tarval_bad) {
- value = new_Const(tv);
-
- DBG_OPT_CSTEVAL(n, value);
- goto make_tuple;
- } else {
- ir_node *a = get_Div_left(n);
- ir_node *b = get_Div_right(n);
- const ir_node *dummy;
if (a == b && value_not_zero(a, &dummy)) {
+ ir_graph *irg = get_irn_irg(n);
/* BEWARE: we can optimize a/a to 1 only if this cannot cause a exception */
- value = new_Const(get_mode_one(mode));
+ value = new_r_Const(irg, get_mode_one(mode));
DBG_OPT_CSTEVAL(n, value);
goto make_tuple;
} else {
if (mode_is_signed(mode) && is_Const(b)) {
- tarval *tv = get_Const_tarval(b);
+ ir_tarval *tv = get_Const_tarval(b);
if (tv == get_mode_minus_one(mode)) {
/* a / -1 */
- value = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), a, mode);
+ value = new_rd_Minus(get_irn_dbg_info(n), get_nodes_block(n), a, mode);
DBG_OPT_CSTEVAL(n, value);
goto make_tuple;
}
/* Try architecture dependent optimization */
value = arch_dep_replace_div_by_const(n);
}
+ } else {
+ assert(mode_is_float(mode));
+
+ /* Optimize x/c to x*(1/c) */
+ if (get_mode_arithmetic(mode) == irma_ieee754) {
+ ir_tarval *tv = value_of(b);
+
+ if (tv != tarval_bad) {
+ int rem = tarval_fp_ops_enabled();
+
+ /*
+ * Floating point constant folding might be disabled here to
+ * prevent rounding.
+ * However, as we check for exact result, doing it is safe.
+ * Switch it on.
+ */
+ tarval_enable_fp_ops(1);
+ tv = tarval_div(get_mode_one(mode), tv);
+ tarval_enable_fp_ops(rem);
+
+ /* Do the transformation if the result is either exact or we are
+ not using strict rules. */
+ if (tv != tarval_bad &&
+ (tarval_ieee754_get_exact() || (get_irg_fp_model(get_irn_irg(n)) & fp_strict_algebraic) == 0)) {
+ ir_node *block = get_nodes_block(n);
+ ir_graph *irg = get_irn_irg(block);
+ ir_node *c = new_r_Const(irg, tv);
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ value = new_rd_Mul(dbgi, block, a, c, mode);
+
+ goto make_tuple;
+ }
+ }
+ }
}
if (value != n) {
ir_node *mem, *blk;
+ ir_graph *irg;
make_tuple:
/* Turn Div into a tuple (mem, jmp, bad, value) */
mem = get_Div_mem(n);
blk = get_nodes_block(n);
+ irg = get_irn_irg(blk);
/* skip a potential Pin */
mem = skip_Pin(mem);
turn_into_tuple(n, pn_Div_max);
set_Tuple_pred(n, pn_Div_M, mem);
- set_Tuple_pred(n, pn_Div_X_regular, new_r_Jmp(current_ir_graph, blk));
- set_Tuple_pred(n, pn_Div_X_except, new_Bad());
+ set_Tuple_pred(n, pn_Div_X_regular, new_r_Jmp(blk));
+ set_Tuple_pred(n, pn_Div_X_except, get_irg_bad(irg));
set_Tuple_pred(n, pn_Div_res, value);
}
return n;
/**
* Transform a Mod node.
*/
-static ir_node *transform_node_Mod(ir_node *n) {
- ir_mode *mode = get_Mod_resmode(n);
- ir_node *a = get_Mod_left(n);
- ir_node *b = get_Mod_right(n);
- ir_node *value;
- tarval *tv;
+static ir_node *transform_node_Mod(ir_node *n)
+{
+ ir_mode *mode = get_Mod_resmode(n);
+ ir_node *a = get_Mod_left(n);
+ ir_node *b = get_Mod_right(n);
+ ir_graph *irg;
+ ir_node *value;
+ ir_tarval *tv;
if (is_Const(b) && is_const_Phi(a)) {
/* check for Div(Phi, Const) */
- value = apply_binop_on_phi(a, get_Const_tarval(b), tarval_mod, mode, 0);
+ value = apply_binop_on_phi(a, get_Const_tarval(b), (eval_func) tarval_mod, mode, 0);
if (value) {
DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
goto make_tuple;
}
else if (is_Const(a) && is_const_Phi(b)) {
/* check for Div(Const, Phi) */
- value = apply_binop_on_phi(b, get_Const_tarval(a), tarval_mod, mode, 1);
+ value = apply_binop_on_phi(b, get_Const_tarval(a), (eval_func) tarval_mod, mode, 1);
if (value) {
DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
goto make_tuple;
}
else if (is_const_Phi(a) && is_const_Phi(b)) {
/* check for Div(Phi, Phi) */
- value = apply_binop_on_2_phis(a, b, tarval_mod, mode);
+ value = apply_binop_on_2_phis(a, b, (eval_func) tarval_mod, mode);
if (value) {
DBG_OPT_ALGSIM0(n, value, FS_OPT_CONST_PHI);
goto make_tuple;
value = n;
tv = value_of(n);
+ irg = get_irn_irg(n);
if (tv != tarval_bad) {
- value = new_Const(tv);
+ value = new_r_Const(irg, tv);
DBG_OPT_CSTEVAL(n, value);
goto make_tuple;
if (a == b && value_not_zero(a, &dummy)) {
/* BEWARE: we can optimize a%a to 0 only if this cannot cause a exception */
- value = new_Const(get_mode_null(mode));
+ value = new_r_Const(irg, get_mode_null(mode));
DBG_OPT_CSTEVAL(n, value);
goto make_tuple;
} else {
if (mode_is_signed(mode) && is_Const(b)) {
- tarval *tv = get_Const_tarval(b);
+ ir_tarval *tv = get_Const_tarval(b);
if (tv == get_mode_minus_one(mode)) {
/* a % -1 = 0 */
- value = new_Const(get_mode_null(mode));
+ value = new_r_Const(irg, get_mode_null(mode));
DBG_OPT_CSTEVAL(n, value);
goto make_tuple;
}
if (value != n) {
ir_node *mem, *blk;
+ ir_graph *irg;
make_tuple:
/* Turn Mod into a tuple (mem, jmp, bad, value) */
mem = get_Mod_mem(n);
blk = get_nodes_block(n);
+ irg = get_irn_irg(blk);
/* skip a potential Pin */
mem = skip_Pin(mem);
turn_into_tuple(n, pn_Mod_max);
set_Tuple_pred(n, pn_Mod_M, mem);
- set_Tuple_pred(n, pn_Mod_X_regular, new_r_Jmp(current_ir_graph, blk));
- set_Tuple_pred(n, pn_Mod_X_except, new_Bad());
+ set_Tuple_pred(n, pn_Mod_X_regular, new_r_Jmp(blk));
+ set_Tuple_pred(n, pn_Mod_X_except, get_irg_bad(irg));
set_Tuple_pred(n, pn_Mod_res, value);
}
return n;
} /* transform_node_Mod */
-/**
- * Transform a DivMod node.
- */
-static ir_node *transform_node_DivMod(ir_node *n) {
- const ir_node *dummy;
- ir_node *a = get_DivMod_left(n);
- ir_node *b = get_DivMod_right(n);
- ir_mode *mode = get_DivMod_resmode(n);
- ir_node *va, *vb;
- tarval *ta, *tb;
- int evaluated = 0;
-
- if (is_Const(b) && is_const_Phi(a)) {
- /* check for Div(Phi, Const) */
- va = apply_binop_on_phi(a, get_Const_tarval(b), tarval_div, mode, 0);
- vb = apply_binop_on_phi(a, get_Const_tarval(b), tarval_mod, mode, 0);
- if (va && vb) {
- DBG_OPT_ALGSIM0(n, va, FS_OPT_CONST_PHI);
- DBG_OPT_ALGSIM0(n, vb, FS_OPT_CONST_PHI);
- goto make_tuple;
- }
- }
- else if (is_Const(a) && is_const_Phi(b)) {
- /* check for Div(Const, Phi) */
- va = apply_binop_on_phi(b, get_Const_tarval(a), tarval_div, mode, 1);
- vb = apply_binop_on_phi(b, get_Const_tarval(a), tarval_mod, mode, 1);
- if (va && vb) {
- DBG_OPT_ALGSIM0(n, va, FS_OPT_CONST_PHI);
- DBG_OPT_ALGSIM0(n, vb, FS_OPT_CONST_PHI);
- goto make_tuple;
- }
- }
- else if (is_const_Phi(a) && is_const_Phi(b)) {
- /* check for Div(Phi, Phi) */
- va = apply_binop_on_2_phis(a, b, tarval_div, mode);
- vb = apply_binop_on_2_phis(a, b, tarval_mod, mode);
- if (va && vb) {
- DBG_OPT_ALGSIM0(n, va, FS_OPT_CONST_PHI);
- DBG_OPT_ALGSIM0(n, vb, FS_OPT_CONST_PHI);
- goto make_tuple;
- }
- }
-
- ta = value_of(a);
- tb = value_of(b);
- if (tb != tarval_bad) {
- if (tb == get_mode_one(get_tarval_mode(tb))) {
- va = a;
- vb = new_Const(get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, vb);
- goto make_tuple;
- } else if (ta != tarval_bad) {
- tarval *resa, *resb;
- resa = tarval_div(ta, tb);
- if (resa == tarval_bad) return n; /* Causes exception!!! Model by replacing through
- Jmp for X result!? */
- resb = tarval_mod(ta, tb);
- if (resb == tarval_bad) return n; /* Causes exception! */
- va = new_Const(resa);
- vb = new_Const(resb);
- DBG_OPT_CSTEVAL(n, va);
- DBG_OPT_CSTEVAL(n, vb);
- goto make_tuple;
- } else if (mode_is_signed(mode) && tb == get_mode_minus_one(mode)) {
- va = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), a, mode);
- vb = new_Const(get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, va);
- DBG_OPT_CSTEVAL(n, vb);
- goto make_tuple;
- } else { /* Try architecture dependent optimization */
- va = a;
- vb = b;
- arch_dep_replace_divmod_by_const(&va, &vb, n);
- evaluated = va != NULL;
- }
- } else if (a == b) {
- if (value_not_zero(a, &dummy)) {
- /* a/a && a != 0 */
- va = new_Const(get_mode_one(mode));
- vb = new_Const(get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, va);
- DBG_OPT_CSTEVAL(n, vb);
- goto make_tuple;
- } else {
- /* BEWARE: it is NOT possible to optimize a/a to 1, as this may cause a exception */
- return n;
- }
- } else if (ta == get_mode_null(mode) && value_not_zero(b, &dummy)) {
- /* 0 / non-Const = 0 */
- vb = va = a;
- goto make_tuple;
- }
-
- if (evaluated) { /* replace by tuple */
- ir_node *mem, *blk;
-
-make_tuple:
- mem = get_DivMod_mem(n);
- /* skip a potential Pin */
- mem = skip_Pin(mem);
-
- blk = get_nodes_block(n);
- turn_into_tuple(n, pn_DivMod_max);
- set_Tuple_pred(n, pn_DivMod_M, mem);
- set_Tuple_pred(n, pn_DivMod_X_regular, new_r_Jmp(current_ir_graph, blk));
- set_Tuple_pred(n, pn_DivMod_X_except, new_Bad()); /* no exception */
- set_Tuple_pred(n, pn_DivMod_res_div, va);
- set_Tuple_pred(n, pn_DivMod_res_mod, vb);
- }
-
- return n;
-} /* transform_node_DivMod */
-
-/**
- * Optimize x / c to x * (1/c)
- */
-static ir_node *transform_node_Quot(ir_node *n) {
- ir_mode *mode = get_Quot_resmode(n);
- ir_node *oldn = n;
-
- if (get_mode_arithmetic(mode) == irma_ieee754) {
- ir_node *b = get_Quot_right(n);
- tarval *tv = value_of(b);
-
- if (tv != tarval_bad) {
- int rem = tarval_fp_ops_enabled();
-
- /*
- * Floating point constant folding might be disabled here to
- * prevent rounding.
- * However, as we check for exact result, doing it is safe.
- * Switch it on.
- */
- tarval_enable_fp_ops(1);
- tv = tarval_quo(get_mode_one(mode), tv);
- tarval_enable_fp_ops(rem);
-
- /* Do the transformation if the result is either exact or we are not
- using strict rules. */
- if (tv != tarval_bad &&
- (tarval_ieee754_get_exact() || (get_irg_fp_model(current_ir_graph) & fp_strict_algebraic) == 0)) {
- ir_node *blk = get_nodes_block(n);
- ir_node *c = new_Const(tv);
- ir_node *a = get_Quot_left(n);
- ir_node *m = new_rd_Mul(get_irn_dbg_info(n), current_ir_graph, blk, a, c, mode);
- ir_node *mem = get_Quot_mem(n);
-
- /* skip a potential Pin */
- mem = skip_Pin(mem);
- turn_into_tuple(n, pn_Quot_max);
- set_Tuple_pred(n, pn_Quot_M, mem);
- set_Tuple_pred(n, pn_Quot_X_regular, new_r_Jmp(current_ir_graph, blk));
- set_Tuple_pred(n, pn_Quot_X_except, new_r_Bad(current_ir_graph));
- set_Tuple_pred(n, pn_Quot_res, m);
- DBG_OPT_ALGSIM1(oldn, a, b, m, FS_OPT_FP_INV_MUL);
- }
- }
- }
- return n;
-} /* transform_node_Quot */
-
-/**
- * Optimize Abs(x) into x if x is Confirmed >= 0
- * Optimize Abs(x) into -x if x is Confirmed <= 0
- * Optimize Abs(-x) int Abs(x)
- */
-static ir_node *transform_node_Abs(ir_node *n) {
- ir_node *c, *oldn = n;
- ir_node *a = get_Abs_op(n);
- ir_mode *mode;
-
- HANDLE_UNOP_PHI(tarval_abs, a, c);
-
- switch (classify_value_sign(a)) {
- case value_classified_negative:
- mode = get_irn_mode(n);
-
- /*
- * We can replace the Abs by -x here.
- * We even could add a new Confirm here
- * (if not twos complement)
- *
- * Note that -x would create a new node, so we could
- * not run it in the equivalent_node() context.
- */
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph,
- get_nodes_block(n), a, mode);
-
- DBG_OPT_CONFIRM(oldn, n);
- return n;
- case value_classified_positive:
- /* n is positive, Abs is not needed */
- n = a;
-
- DBG_OPT_CONFIRM(oldn, n);
- return n;
- default:
- break;
- }
- if (is_Minus(a)) {
- /* Abs(-x) = Abs(x) */
- mode = get_irn_mode(n);
- n = new_rd_Abs(get_irn_dbg_info(n), current_ir_graph,
- get_nodes_block(n), get_Minus_op(a), mode);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ABS_MINUS_X);
- return n;
- }
- return n;
-} /* transform_node_Abs */
-
-/**
- * Optimize -a CMP -b into b CMP a.
- * This works only for for modes where unary Minus
- * cannot Overflow.
- * Note that two-complement integers can Overflow
- * so it will NOT work.
- *
- * For == and != can be handled in Proj(Cmp)
- */
-static ir_node *transform_node_Cmp(ir_node *n) {
- ir_node *oldn = n;
- ir_node *left = get_Cmp_left(n);
- ir_node *right = get_Cmp_right(n);
-
- if (is_Minus(left) && is_Minus(right) &&
- !mode_overflow_on_unary_Minus(get_irn_mode(left))) {
- ir_node *const new_left = get_Minus_op(right);
- ir_node *const new_right = get_Minus_op(left);
- n = new_rd_Cmp(get_irn_dbg_info(n), current_ir_graph,
- get_nodes_block(n), new_left, new_right);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_CMP_OP_OP);
- }
- return n;
-} /* transform_node_Cmp */
-
-
/**
* Transform a Cond node.
*
* Replace the Cond by a Jmp if it branches on a constant
* condition.
*/
-static ir_node *transform_node_Cond(ir_node *n) {
+static ir_node *transform_node_Cond(ir_node *n)
+{
- ir_node *jmp;
- ir_node *a = get_Cond_selector(n);
- tarval *ta = value_of(a);
+ ir_node *a = get_Cond_selector(n);
+ ir_tarval *ta = value_of(a);
+ ir_graph *irg = get_irn_irg(n);
+ ir_node *jmp;
/* we need block info which is not available in floating irgs */
- if (get_irg_pinned(current_ir_graph) == op_pin_state_floats)
+ if (get_irg_pinned(irg) == op_pin_state_floats)
return n;
if ((ta != tarval_bad) &&
/* It's a boolean Cond, branching on a boolean constant.
Replace it by a tuple (Bad, Jmp) or (Jmp, Bad) */
ir_node *blk = get_nodes_block(n);
- jmp = new_r_Jmp(current_ir_graph, blk);
+ jmp = new_r_Jmp(blk);
turn_into_tuple(n, pn_Cond_max);
if (ta == tarval_b_true) {
- set_Tuple_pred(n, pn_Cond_false, new_Bad());
+ set_Tuple_pred(n, pn_Cond_false, get_irg_bad(irg));
set_Tuple_pred(n, pn_Cond_true, jmp);
} else {
set_Tuple_pred(n, pn_Cond_false, jmp);
- set_Tuple_pred(n, pn_Cond_true, new_Bad());
+ set_Tuple_pred(n, pn_Cond_true, get_irg_bad(irg));
}
/* We might generate an endless loop, so keep it alive. */
- add_End_keepalive(get_irg_end(current_ir_graph), blk);
+ add_End_keepalive(get_irg_end(irg), blk);
}
return n;
} /* transform_node_Cond */
ir_op *op = get_irn_op(a);
ir_op *op_root = get_irn_op(n);
- if(op != get_irn_op(b))
+ if (op != get_irn_op(b))
return n;
+ /* and(conv(a), conv(b)) -> conv(and(a,b)) */
if (op == op_Conv) {
ir_node *a_op = get_Conv_op(a);
ir_node *b_op = get_Conv_op(b);
ir_mode *a_mode = get_irn_mode(a_op);
ir_mode *b_mode = get_irn_mode(b_op);
- if(a_mode == b_mode && (mode_is_int(a_mode) || a_mode == mode_b)) {
+ if (a_mode == b_mode && (mode_is_int(a_mode) || a_mode == mode_b)) {
ir_node *blk = get_nodes_block(n);
n = exact_copy(n);
set_binop_right(n, b_op);
set_irn_mode(n, a_mode);
n = trans_func(n);
- n = new_r_Conv(current_ir_graph, blk, n, get_irn_mode(oldn), 0);
+ n = new_r_Conv(blk, n, get_irn_mode(oldn));
- DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_SHIFT_AND);
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_CONV);
return n;
}
}
c = a_left;
op1 = a_right;
op2 = b_right;
- } else if(a_left == b_right) {
+ } else if (a_left == b_right) {
c = a_left;
op1 = a_right;
op2 = b_left;
- } else if(a_right == b_left) {
+ } else if (a_right == b_left) {
c = a_right;
op1 = a_left;
op2 = b_right;
}
}
- if(a_right == b_right) {
+ if (a_right == b_right) {
c = a_right;
op1 = a_left;
op2 = b_left;
set_binop_right(new_n, op2);
new_n = trans_func(new_n);
- if(op_root == op_Eor && op == op_Or) {
+ if (op_root == op_Eor && op == op_Or) {
dbg_info *dbgi = get_irn_dbg_info(n);
- ir_graph *irg = current_ir_graph;
ir_mode *mode = get_irn_mode(c);
- c = new_rd_Not(dbgi, irg, blk, c, mode);
- n = new_rd_And(dbgi, irg, blk, new_n, c, mode);
+ c = new_rd_Not(dbgi, blk, c, mode);
+ n = new_rd_And(dbgi, blk, new_n, c, mode);
} else {
n = exact_copy(a);
set_nodes_block(n, blk);
set_binop_left(n, new_n);
set_binop_right(n, c);
- add_identities(current_ir_graph->value_table, n);
+ add_identities(n);
}
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_SHIFT_AND);
/**
* Transform an And.
*/
-static ir_node *transform_node_And(ir_node *n) {
+static ir_node *transform_node_And(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_And_left(n);
ir_node *b = get_And_right(n);
ir_mode *mode;
+ vrp_attr *a_vrp, *b_vrp;
- mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_and, a, b, c, mode);
-
- /* we can evaluate 2 Projs of the same Cmp */
- if (mode == mode_b && is_Proj(a) && is_Proj(b)) {
- ir_node *pred_a = get_Proj_pred(a);
- ir_node *pred_b = get_Proj_pred(b);
- if (pred_a == pred_b) {
- dbg_info *dbgi = get_irn_dbg_info(n);
- ir_node *block = get_nodes_block(pred_a);
- pn_Cmp pn_a = get_Proj_proj(a);
- pn_Cmp pn_b = get_Proj_proj(b);
- /* yes, we can simply calculate with pncs */
- pn_Cmp new_pnc = pn_a & pn_b;
-
- return new_rd_Proj(dbgi, current_ir_graph, block, pred_a, mode_b, new_pnc);
+ /* we can combine the relations of two compares with the same operands */
+ if (is_Cmp(a) && is_Cmp(b)) {
+ ir_node *a_left = get_Cmp_left(a);
+ ir_node *a_right = get_Cmp_left(a);
+ ir_node *b_left = get_Cmp_left(b);
+ ir_node *b_right = get_Cmp_right(b);
+ if (a_left == b_left && b_left == b_right) {
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ ir_relation a_relation = get_Cmp_relation(a);
+ ir_relation b_relation = get_Cmp_relation(b);
+ ir_relation new_relation = a_relation & b_relation;
+ return new_rd_Cmp(dbgi, block, a_left, a_right, new_relation);
}
}
+
+ mode = get_irn_mode(n);
+ HANDLE_BINOP_PHI((eval_func) tarval_and, a, b, c, mode);
+
if (is_Or(a)) {
if (is_Not(b)) {
ir_node *op = get_Not_op(b);
/* (a|b) & ~(a&b) = a^b */
ir_node *block = get_nodes_block(n);
- n = new_rd_Eor(get_irn_dbg_info(n), current_ir_graph, block, ba, bb, mode);
+ n = new_rd_Eor(get_irn_dbg_info(n), block, ba, bb, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_TO_EOR);
return n;
}
/* (a|b) & ~(a&b) = a^b */
ir_node *block = get_nodes_block(n);
- n = new_rd_Eor(get_irn_dbg_info(n), current_ir_graph, block, aa, ab, mode);
+ n = new_rd_Eor(get_irn_dbg_info(n), block, aa, ab, mode);
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_TO_EOR);
return n;
}
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- ar = new_rd_Not(dbg, current_ir_graph, block, ar, mode);
- n = new_rd_And(dbg, current_ir_graph, block, ar, b, mode);
+ ar = new_rd_Not(dbg, block, ar, mode);
+ n = new_rd_And(dbg, block, ar, b, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
return n;
}
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- al = new_rd_Not(dbg, current_ir_graph, block, al, mode);
- n = new_rd_And(dbg, current_ir_graph, block, al, b, mode);
+ al = new_rd_Not(dbg, block, al, mode);
+ n = new_rd_And(dbg, block, al, b, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
return n;
}
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- br = new_rd_Not(dbg, current_ir_graph, block, br, mode);
- n = new_rd_And(dbg, current_ir_graph, block, br, a, mode);
+ br = new_rd_Not(dbg, block, br, mode);
+ n = new_rd_And(dbg, block, br, a, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
return n;
}
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- bl = new_rd_Not(dbg, current_ir_graph, block, bl, mode);
- n = new_rd_And(dbg, current_ir_graph, block, bl, a, mode);
+ bl = new_rd_Not(dbg, block, bl, mode);
+ n = new_rd_And(dbg, block, bl, a, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
return n;
}
a = get_Not_op(a);
b = get_Not_op(b);
- n = new_rd_Or(get_irn_dbg_info(n), current_ir_graph, block, a, b, mode);
- n = new_rd_Not(get_irn_dbg_info(n), current_ir_graph, block, n, mode);
+ n = new_rd_Or(get_irn_dbg_info(n), block, a, b, mode);
+ n = new_rd_Not(get_irn_dbg_info(n), block, n, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_DEMORGAN);
return n;
}
+ b_vrp = vrp_get_info(b);
+ if (is_Const(a) && b_vrp && (tarval_cmp(tarval_or(get_Const_tarval(a),
+ b_vrp->bits_not_set), get_Const_tarval(a)) == ir_relation_equal)) {
+
+ return b;
+
+ }
+
+ a_vrp = vrp_get_info(a);
+ if (is_Const(b) && a_vrp && (tarval_cmp(tarval_or(get_Const_tarval(b),
+ a_vrp->bits_not_set), get_Const_tarval(b)) == ir_relation_equal)) {
+ return a;
+ }
+
n = transform_bitwise_distributive(n, transform_node_And);
return n;
} /* transform_node_And */
+/* the order of the values is important! */
+typedef enum const_class {
+ const_const = 0,
+ const_like = 1,
+ const_other = 2
+} const_class;
+
+static const_class classify_const(const ir_node* n)
+{
+ if (is_Const(n)) return const_const;
+ if (is_irn_constlike(n)) return const_like;
+ return const_other;
+}
+
+/**
+ * Determines whether r is more constlike or has a larger index (in that order)
+ * than l.
+ */
+static bool operands_are_normalized(const ir_node *l, const ir_node *r)
+{
+ const const_class l_order = classify_const(l);
+ const const_class r_order = classify_const(r);
+ return
+ l_order > r_order ||
+ (l_order == r_order && get_irn_idx(l) <= get_irn_idx(r));
+}
+
/**
* Transform an Eor.
*/
-static ir_node *transform_node_Eor(ir_node *n) {
+static ir_node *transform_node_Eor(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Eor_left(n);
ir_node *b = get_Eor_right(n);
ir_mode *mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_eor, a, b, c, mode);
-
- /* we can evaluate 2 Projs of the same Cmp */
- if (mode == mode_b && is_Proj(a) && is_Proj(b)) {
- ir_node *pred_a = get_Proj_pred(a);
- ir_node *pred_b = get_Proj_pred(b);
- if(pred_a == pred_b) {
- dbg_info *dbgi = get_irn_dbg_info(n);
- ir_node *block = get_nodes_block(pred_a);
- pn_Cmp pn_a = get_Proj_proj(a);
- pn_Cmp pn_b = get_Proj_proj(b);
- /* yes, we can simply calculate with pncs */
- pn_Cmp new_pnc = pn_a ^ pn_b;
-
- return new_rd_Proj(dbgi, current_ir_graph, block, pred_a, mode_b,
- new_pnc);
- }
+ /* we can combine the relations of two compares with the same operands */
+ if (is_Cmp(a) && is_Cmp(b)) {
+ ir_node *a_left = get_Cmp_left(a);
+ ir_node *a_right = get_Cmp_left(a);
+ ir_node *b_left = get_Cmp_left(b);
+ ir_node *b_right = get_Cmp_right(b);
+ if (a_left == b_left && b_left == b_right) {
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ ir_relation a_relation = get_Cmp_relation(a);
+ ir_relation b_relation = get_Cmp_relation(b);
+ ir_relation new_relation = a_relation ^ b_relation;
+ return new_rd_Cmp(dbgi, block, a_left, a_right, new_relation);
+ }
+ }
+
+ HANDLE_BINOP_PHI((eval_func) tarval_eor, a, b, c, mode);
+
+ /* normalize not nodes... ~a ^ b <=> a ^ ~b */
+ if (is_Not(a) && operands_are_normalized(get_Not_op(a), b)) {
+ dbg_info *dbg = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ ir_node *new_not = new_rd_Not(dbg, block, b, mode);
+ ir_node *new_left = get_Not_op(a);
+ n = new_rd_Eor(dbg, block, new_left, new_not, mode);
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
+ return n;
+ } else if (is_Not(b) && !operands_are_normalized(a, get_Not_op(b))) {
+ dbg_info *dbg = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ ir_node *new_not = new_rd_Not(dbg, block, a, mode);
+ ir_node *new_right = get_Not_op(b);
+ n = new_rd_Eor(dbg, block, new_not, new_right, mode);
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
+ return n;
}
- if (a == b) {
- /* a ^ a = 0 */
- n = new_rd_Const(get_irn_dbg_info(n), current_ir_graph,
- get_mode_null(mode));
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_A_A);
- } else if (mode == mode_b &&
- is_Proj(a) &&
- is_Const(b) && is_Const_one(b) &&
- is_Cmp(get_Proj_pred(a))) {
- /* The Eor negates a Cmp. The Cmp has the negated result anyways! */
- n = new_r_Proj(current_ir_graph, get_nodes_block(n), get_Proj_pred(a),
- mode_b, get_negated_pnc(get_Proj_proj(a), mode));
-
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT_BOOL);
- } else if (is_Const(b)) {
- if (is_Not(a)) { /* ~x ^ const -> x ^ ~const */
- ir_node *cnst = new_Const(tarval_not(get_Const_tarval(b)));
- ir_node *not_op = get_Not_op(a);
- dbg_info *dbg = get_irn_dbg_info(n);
- ir_graph *irg = current_ir_graph;
- ir_node *block = get_nodes_block(n);
- ir_mode *mode = get_irn_mode(n);
- n = new_rd_Eor(dbg, irg, block, not_op, cnst, mode);
- return n;
- } else if (is_Const_all_one(b)) { /* x ^ 1...1 -> ~1 */
- n = new_r_Not(current_ir_graph, get_nodes_block(n), a, mode);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
- }
- } else {
- n = transform_bitwise_distributive(n, transform_node_Eor);
+ /* x ^ 1...1 -> ~1 */
+ if (is_Const(b) && is_Const_all_one(b)) {
+ n = new_r_Not(get_nodes_block(n), a, mode);
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
+ return n;
}
+ n = transform_bitwise_distributive(n, transform_node_Eor);
return n;
} /* transform_node_Eor */
/**
* Transform a Not.
*/
-static ir_node *transform_node_Not(ir_node *n) {
+static ir_node *transform_node_Not(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Not_op(n);
ir_mode *mode = get_irn_mode(n);
HANDLE_UNOP_PHI(tarval_not,a,c);
/* check for a boolean Not */
- if (mode == mode_b &&
- is_Proj(a) &&
- is_Cmp(get_Proj_pred(a))) {
- /* We negate a Cmp. The Cmp has the negated result anyways! */
- n = new_r_Proj(current_ir_graph, get_nodes_block(n), get_Proj_pred(a),
- mode_b, get_negated_pnc(get_Proj_proj(a), mode_b));
+ if (is_Cmp(a)) {
+ dbg_info *dbgi = get_irn_dbg_info(a);
+ ir_node *block = get_nodes_block(a);
+ ir_relation relation = get_Cmp_relation(a);
+ relation = get_negated_relation(relation);
+ n = new_rd_Cmp(dbgi, block, get_Cmp_left(a), get_Cmp_right(a), relation);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_NOT_CMP);
return n;
}
- if (is_Eor(a)) {
- ir_node *eor_b = get_Eor_right(a);
- if (is_Const(eor_b)) { /* ~(x ^ const) -> x ^ ~const */
- ir_node *cnst = new_Const(tarval_not(get_Const_tarval(eor_b)));
- ir_node *eor_a = get_Eor_left(a);
- dbg_info *dbg = get_irn_dbg_info(n);
- ir_graph *irg = current_ir_graph;
- ir_node *block = get_nodes_block(n);
- ir_mode *mode = get_irn_mode(n);
- n = new_rd_Eor(dbg, irg, block, eor_a, cnst, mode);
- return n;
- }
+
+ /* normalize ~(a ^ b) => a ^ ~b */
+ if (is_Eor(a)) {
+ dbg_info *dbg = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ ir_node *eor_right = get_Eor_right(a);
+ ir_node *eor_left = get_Eor_left(a);
+ eor_right = new_rd_Not(dbg, block, eor_right, mode);
+ n = new_rd_Eor(dbg, block, eor_left, eor_right, mode);
+ return n;
}
+
if (get_mode_arithmetic(mode) == irma_twos_complement) {
if (is_Minus(a)) { /* ~-x -> x + -1 */
dbg_info *dbg = get_irn_dbg_info(n);
- ir_graph *irg = current_ir_graph;
+ ir_graph *irg = get_irn_irg(n);
ir_node *block = get_nodes_block(n);
ir_node *add_l = get_Minus_op(a);
ir_node *add_r = new_rd_Const(dbg, irg, get_mode_minus_one(mode));
- n = new_rd_Add(dbg, irg, block, add_l, add_r, mode);
+ n = new_rd_Add(dbg, block, add_l, add_r, mode);
} else if (is_Add(a)) {
ir_node *add_r = get_Add_right(a);
if (is_Const(add_r) && is_Const_all_one(add_r)) {
/* ~(x + -1) = -x */
ir_node *op = get_Add_left(a);
ir_node *blk = get_nodes_block(n);
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, op, get_irn_mode(n));
+ n = new_rd_Minus(get_irn_dbg_info(n), blk, op, get_irn_mode(n));
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_NOT_MINUS_1);
}
}
}
return n;
-} /* transform_node_Not */
+}
/**
* Transform a Minus.
* -(a >>s (size-1)) = a >>u (size-1)
* -(a * const) -> a * -const
*/
-static ir_node *transform_node_Minus(ir_node *n) {
+static ir_node *transform_node_Minus(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Minus_op(n);
ir_mode *mode;
/* the following rules are only to twos-complement */
if (is_Not(a)) {
/* -(~x) = x + 1 */
- ir_node *op = get_Not_op(a);
- tarval *tv = get_mode_one(mode);
- ir_node *blk = get_nodes_block(n);
- ir_node *c = new_Const(tv);
- n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, blk, op, c, mode);
+ ir_node *op = get_Not_op(a);
+ ir_tarval *tv = get_mode_one(mode);
+ ir_node *blk = get_nodes_block(n);
+ ir_graph *irg = get_irn_irg(blk);
+ ir_node *c = new_r_Const(irg, tv);
+ n = new_rd_Add(get_irn_dbg_info(n), blk, op, c, mode);
DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_MINUS_NOT);
return n;
}
ir_node *c = get_Shr_right(a);
if (is_Const(c)) {
- tarval *tv = get_Const_tarval(c);
+ ir_tarval *tv = get_Const_tarval(c);
if (tarval_is_long(tv) && get_tarval_long(tv) == (int) get_mode_size_bits(mode) - 1) {
/* -(a >>u (size-1)) = a >>s (size-1) */
ir_node *v = get_Shr_left(a);
- n = new_rd_Shrs(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), v, c, mode);
+ n = new_rd_Shrs(get_irn_dbg_info(n), get_nodes_block(n), v, c, mode);
DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_PREDICATE);
return n;
}
ir_node *c = get_Shrs_right(a);
if (is_Const(c)) {
- tarval *tv = get_Const_tarval(c);
+ ir_tarval *tv = get_Const_tarval(c);
if (tarval_is_long(tv) && get_tarval_long(tv) == (int) get_mode_size_bits(mode) - 1) {
/* -(a >>s (size-1)) = a >>u (size-1) */
ir_node *v = get_Shrs_left(a);
- n = new_rd_Shr(get_irn_dbg_info(n), current_ir_graph, get_nodes_block(n), v, c, mode);
+ n = new_rd_Shr(get_irn_dbg_info(n), get_nodes_block(n), v, c, mode);
DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_PREDICATE);
return n;
}
ir_node *ra = get_Sub_right(a);
ir_node *blk = get_nodes_block(n);
- n = new_rd_Sub(get_irn_dbg_info(n), current_ir_graph, blk, ra, la, mode);
+ n = new_rd_Sub(get_irn_dbg_info(n), blk, ra, la, mode);
DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_MINUS_SUB);
return n;
}
if (is_Mul(a)) { /* -(a * const) -> a * -const */
- ir_node *mul_l = get_Mul_left(a);
- ir_node *mul_r = get_Mul_right(a);
- tarval *tv = value_of(mul_r);
+ ir_node *mul_l = get_Mul_left(a);
+ ir_node *mul_r = get_Mul_right(a);
+ ir_tarval *tv = value_of(mul_r);
if (tv != tarval_bad) {
tv = tarval_neg(tv);
if (tv != tarval_bad) {
- ir_node *cnst = new_Const(tv);
+ ir_graph *irg = get_irn_irg(n);
+ ir_node *cnst = new_r_Const(irg, tv);
dbg_info *dbg = get_irn_dbg_info(a);
- ir_graph *irg = current_ir_graph;
ir_node *block = get_nodes_block(a);
- n = new_rd_Mul(dbg, irg, block, mul_l, cnst, mode);
+ n = new_rd_Mul(dbg, block, mul_l, cnst, mode);
DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_MINUS_MUL_C);
return n;
}
return n;
} /* transform_node_Minus */
-/**
- * Transform a Cast_type(Const) into a new Const_type
- */
-static ir_node *transform_node_Cast(ir_node *n) {
- ir_node *oldn = n;
- ir_node *pred = get_Cast_op(n);
- ir_type *tp = get_irn_type(n);
-
- if (is_Const(pred) && get_Const_type(pred) != tp) {
- n = new_rd_Const_type(NULL, current_ir_graph, get_Const_tarval(pred), tp);
- DBG_OPT_CSTEVAL(oldn, n);
- } else if (is_SymConst(pred) && get_SymConst_value_type(pred) != tp) {
- n = new_rd_SymConst_type(NULL, current_ir_graph, get_irn_n(pred, -1), get_irn_mode(pred),
- get_SymConst_symbol(pred), get_SymConst_kind(pred), tp);
- DBG_OPT_CSTEVAL(oldn, n);
- }
-
- return n;
-} /* transform_node_Cast */
-
/**
* Transform a Proj(Load) with a non-null address.
*/
-static ir_node *transform_node_Proj_Load(ir_node *proj) {
+static ir_node *transform_node_Proj_Load(ir_node *proj)
+{
if (get_opt_ldst_only_null_ptr_exceptions()) {
if (get_irn_mode(proj) == mode_X) {
ir_node *load = get_Proj_pred(proj);
set_irn_pinned(load, op_pin_state_floats);
}
if (get_Proj_proj(proj) == pn_Load_X_except) {
+ ir_graph *irg = get_irn_irg(proj);
DBG_OPT_EXC_REM(proj);
- return get_irg_bad(current_ir_graph);
+ return get_irg_bad(irg);
} else {
ir_node *blk = get_nodes_block(load);
- return new_r_Jmp(current_ir_graph, blk);
+ return new_r_Jmp(blk);
}
}
}
/**
* Transform a Proj(Store) with a non-null address.
*/
-static ir_node *transform_node_Proj_Store(ir_node *proj) {
+static ir_node *transform_node_Proj_Store(ir_node *proj)
+{
if (get_opt_ldst_only_null_ptr_exceptions()) {
if (get_irn_mode(proj) == mode_X) {
ir_node *store = get_Proj_pred(proj);
set_irn_pinned(store, op_pin_state_floats);
}
if (get_Proj_proj(proj) == pn_Store_X_except) {
+ ir_graph *irg = get_irn_irg(proj);
DBG_OPT_EXC_REM(proj);
- return get_irg_bad(current_ir_graph);
+ return get_irg_bad(irg);
} else {
ir_node *blk = get_nodes_block(store);
- return new_r_Jmp(current_ir_graph, blk);
+ return new_r_Jmp(blk);
}
}
}
* Transform a Proj(Div) with a non-zero value.
* Removes the exceptions and routes the memory to the NoMem node.
*/
-static ir_node *transform_node_Proj_Div(ir_node *proj) {
+static ir_node *transform_node_Proj_Div(ir_node *proj)
+{
ir_node *div = get_Proj_pred(proj);
ir_node *b = get_Div_right(div);
ir_node *res, *new_mem;
proj_nr = get_Proj_proj(proj);
switch (proj_nr) {
case pn_Div_X_regular:
- return new_r_Jmp(current_ir_graph, get_irn_n(div, -1));
+ return new_r_Jmp(get_nodes_block(div));
- case pn_Div_X_except:
+ case pn_Div_X_except: {
+ ir_graph *irg = get_irn_irg(proj);
/* we found an exception handler, remove it */
DBG_OPT_EXC_REM(proj);
- return new_Bad();
+ return get_irg_bad(irg);
+ }
- case pn_Div_M:
+ case pn_Div_M: {
+ ir_graph *irg = get_irn_irg(proj);
res = get_Div_mem(div);
- new_mem = get_irg_no_mem(current_ir_graph);
+ new_mem = get_irg_no_mem(irg);
if (confirm) {
/* This node can only float up to the Confirm block */
- new_mem = new_r_Pin(current_ir_graph, get_nodes_block(confirm), new_mem);
+ new_mem = new_r_Pin(get_nodes_block(confirm), new_mem);
}
set_irn_pinned(div, op_pin_state_floats);
/* this is a Div without exception, we can remove the memory edge */
set_Div_mem(div, new_mem);
return res;
}
+ }
}
return proj;
} /* transform_node_Proj_Div */
* Transform a Proj(Mod) with a non-zero value.
* Removes the exceptions and routes the memory to the NoMem node.
*/
-static ir_node *transform_node_Proj_Mod(ir_node *proj) {
+static ir_node *transform_node_Proj_Mod(ir_node *proj)
+{
ir_node *mod = get_Proj_pred(proj);
ir_node *b = get_Mod_right(mod);
ir_node *res, *new_mem;
switch (proj_nr) {
case pn_Mod_X_regular:
- return new_r_Jmp(current_ir_graph, get_irn_n(mod, -1));
+ return new_r_Jmp(get_irn_n(mod, -1));
- case pn_Mod_X_except:
+ case pn_Mod_X_except: {
+ ir_graph *irg = get_irn_irg(proj);
/* we found an exception handler, remove it */
DBG_OPT_EXC_REM(proj);
- return new_Bad();
+ return get_irg_bad(irg);
+ }
- case pn_Mod_M:
+ case pn_Mod_M: {
+ ir_graph *irg = get_irn_irg(proj);
res = get_Mod_mem(mod);
- new_mem = get_irg_no_mem(current_ir_graph);
+ new_mem = get_irg_no_mem(irg);
if (confirm) {
/* This node can only float up to the Confirm block */
- new_mem = new_r_Pin(current_ir_graph, get_nodes_block(confirm), new_mem);
+ new_mem = new_r_Pin(get_nodes_block(confirm), new_mem);
}
/* this is a Mod without exception, we can remove the memory edge */
set_Mod_mem(mod, new_mem);
return res;
+ }
case pn_Mod_res:
if (get_Mod_left(mod) == b) {
/* a % a = 0 if a != 0 */
- ir_mode *mode = get_irn_mode(proj);
- ir_node *res = new_Const(get_mode_null(mode));
+ ir_graph *irg = get_irn_irg(proj);
+ ir_mode *mode = get_irn_mode(proj);
+ ir_node *res = new_r_Const(irg, get_mode_null(mode));
DBG_OPT_CSTEVAL(mod, res);
return res;
} /* transform_node_Proj_Mod */
/**
- * Transform a Proj(DivMod) with a non-zero value.
- * Removes the exceptions and routes the memory to the NoMem node.
+ * Optimizes jump tables (CondIs or CondIu) by removing all impossible cases.
*/
-static ir_node *transform_node_Proj_DivMod(ir_node *proj) {
- ir_node *divmod = get_Proj_pred(proj);
- ir_node *b = get_DivMod_right(divmod);
- ir_node *res, *new_mem;
- const ir_node *confirm;
- long proj_nr;
-
- if (value_not_zero(b, &confirm)) {
- /* DivMod(x, y) && y != 0 */
- proj_nr = get_Proj_proj(proj);
-
- if (confirm == NULL) {
- /* we are sure we have a Const != 0 */
- new_mem = get_DivMod_mem(divmod);
- new_mem = skip_Pin(new_mem);
- set_DivMod_mem(divmod, new_mem);
- set_irn_pinned(divmod, op_pin_state_floats);
- }
-
- switch (proj_nr) {
+static ir_node *transform_node_Proj_Cond(ir_node *proj)
+{
+ ir_node *n = get_Proj_pred(proj);
+ ir_node *b = get_Cond_selector(n);
- case pn_DivMod_X_regular:
- return new_r_Jmp(current_ir_graph, get_irn_n(divmod, -1));
+ if (!get_opt_unreachable_code())
+ return n;
- case pn_DivMod_X_except:
- /* we found an exception handler, remove it */
- DBG_OPT_EXC_REM(proj);
- return new_Bad();
+ if (mode_is_int(get_irn_mode(b))) {
+ ir_tarval *tb = value_of(b);
- case pn_DivMod_M:
- res = get_DivMod_mem(divmod);
- new_mem = get_irg_no_mem(current_ir_graph);
+ if (tb != tarval_bad) {
+ /* we have a constant switch */
+ long num = get_Proj_proj(proj);
- if (confirm) {
- /* This node can only float up to the Confirm block */
- new_mem = new_r_Pin(current_ir_graph, get_nodes_block(confirm), new_mem);
+ if (num != get_Cond_default_proj(n)) { /* we cannot optimize default Proj's yet */
+ if (get_tarval_long(tb) == num) {
+ /* Do NOT create a jump here, or we will have 2 control flow ops
+ * in a block. This case is optimized away in optimize_cf(). */
+ return proj;
+ } else {
+ ir_graph *irg = get_irn_irg(proj);
+ /* this case will NEVER be taken, kill it */
+ return get_irg_bad(irg);
+ }
}
- /* this is a DivMod without exception, we can remove the memory edge */
- set_DivMod_mem(divmod, new_mem);
- return res;
-
- case pn_DivMod_res_mod:
- if (get_DivMod_left(divmod) == b) {
- /* a % a = 0 if a != 0 */
- ir_mode *mode = get_irn_mode(proj);
- ir_node *res = new_Const(get_mode_null(mode));
+ } else {
+ long num = get_Proj_proj(proj);
+ vrp_attr *b_vrp = vrp_get_info(b);
+ if (num != get_Cond_default_proj(n) && b_vrp) {
+ /* Try handling with vrp data. We only remove dead parts. */
+ ir_tarval *tp = new_tarval_from_long(num, get_irn_mode(b));
+
+ if (b_vrp->range_type == VRP_RANGE) {
+ ir_relation cmp_result = tarval_cmp(b_vrp->range_bottom, tp);
+ ir_relation cmp_result2 = tarval_cmp(b_vrp->range_top, tp);
+
+ if ((cmp_result & ir_relation_greater) == cmp_result && (cmp_result2
+ & ir_relation_less) == cmp_result2) {
+ ir_graph *irg = get_irn_irg(proj);
+ return get_irg_bad(irg);
+ }
+ } else if (b_vrp->range_type == VRP_ANTIRANGE) {
+ ir_relation cmp_result = tarval_cmp(b_vrp->range_bottom, tp);
+ ir_relation cmp_result2 = tarval_cmp(b_vrp->range_top, tp);
+
+ if ((cmp_result & ir_relation_less_equal) == cmp_result && (cmp_result2
+ & ir_relation_greater_equal) == cmp_result2) {
+ ir_graph *irg = get_irn_irg(proj);
+ return get_irg_bad(irg);
+ }
+ }
- DBG_OPT_CSTEVAL(divmod, res);
- return res;
- }
- }
- }
- return proj;
-} /* transform_node_Proj_DivMod */
+ if (!(tarval_cmp(
+ tarval_and( b_vrp->bits_set, tp),
+ b_vrp->bits_set
+ ) == ir_relation_equal)) {
+ ir_graph *irg = get_irn_irg(proj);
+ return get_irg_bad(irg);
+ }
-/**
- * Optimizes jump tables (CondIs or CondIu) by removing all impossible cases.
- */
-static ir_node *transform_node_Proj_Cond(ir_node *proj) {
- if (get_opt_unreachable_code()) {
- ir_node *n = get_Proj_pred(proj);
- ir_node *b = get_Cond_selector(n);
-
- if (mode_is_int(get_irn_mode(b))) {
- tarval *tb = value_of(b);
-
- if (tb != tarval_bad) {
- /* we have a constant switch */
- long num = get_Proj_proj(proj);
-
- if (num != get_Cond_defaultProj(n)) { /* we cannot optimize default Proj's yet */
- if (get_tarval_long(tb) == num) {
- /* Do NOT create a jump here, or we will have 2 control flow ops
- * in a block. This case is optimized away in optimize_cf(). */
- return proj;
- } else {
- /* this case will NEVER be taken, kill it */
- return get_irg_bad(current_ir_graph);
- }
+ if (!(tarval_cmp(
+ tarval_and(
+ tarval_not(tp),
+ tarval_not(b_vrp->bits_not_set)),
+ tarval_not(b_vrp->bits_not_set))
+ == ir_relation_equal)) {
+ ir_graph *irg = get_irn_irg(proj);
+ return get_irg_bad(irg);
}
+
+
}
}
}
return proj;
-} /* transform_node_Proj_Cond */
+}
/**
- * Create a 0 constant of given mode.
+ * return true if the operation returns a value with exactly 1 bit set
*/
-static ir_node *create_zero_const(ir_mode *mode) {
- tarval *tv = get_mode_null(mode);
- ir_node *cnst = new_Const(tv);
-
- return cnst;
-}
-
-/* the order of the values is important! */
-typedef enum const_class {
- const_const = 0,
- const_like = 1,
- const_other = 2
-} const_class;
-
-static const_class classify_const(const ir_node* n)
+static bool is_single_bit(const ir_node *node)
{
- if (is_Const(n)) return const_const;
- if (is_irn_constlike(n)) return const_like;
- return const_other;
+ /* a first implementation, could be extended with vrp and others... */
+ if (is_Shl(node)) {
+ ir_node *shl_l = get_Shl_left(node);
+ ir_mode *mode = get_irn_mode(node);
+ int modulo = get_mode_modulo_shift(mode);
+ /* this works if we shift a 1 and we have modulo shift */
+ if (is_Const(shl_l) && is_Const_one(shl_l)
+ && 0 < modulo && modulo <= (int)get_mode_size_bits(mode)) {
+ return true;
+ }
+ } else if (is_Const(node)) {
+ ir_tarval *tv = get_Const_tarval(node);
+ return tarval_is_single_bit(tv);
+ }
+ return false;
}
/**
- * Determines whether r is more constlike or has a larger index (in that order)
- * than l.
+ * Create a 0 constant of given mode.
*/
-static int operands_are_normalized(const ir_node *l, const ir_node *r)
+static ir_node *create_zero_const(ir_graph *irg, ir_mode *mode)
{
- const const_class l_order = classify_const(l);
- const const_class r_order = classify_const(r);
- return
- l_order > r_order ||
- (l_order == r_order && get_irn_idx(l) <= get_irn_idx(r));
+ ir_tarval *tv = get_mode_null(mode);
+ ir_node *cnst = new_r_Const(irg, tv);
+
+ return cnst;
}
/**
* Normalizes and optimizes Cmp nodes.
*/
-static ir_node *transform_node_Proj_Cmp(ir_node *proj) {
- ir_node *n = get_Proj_pred(proj);
- ir_node *left = get_Cmp_left(n);
- ir_node *right = get_Cmp_right(n);
- tarval *tv = NULL;
- int changed = 0;
- ir_mode *mode = NULL;
- long proj_nr = get_Proj_proj(proj);
-
- /* we can evaluate some cases directly */
- switch (proj_nr) {
- case pn_Cmp_False:
- return new_Const(get_tarval_b_false());
- case pn_Cmp_True:
- return new_Const(get_tarval_b_true());
- case pn_Cmp_Leg:
- if (!mode_is_float(get_irn_mode(left)))
- return new_Const(get_tarval_b_true());
- break;
- default:
- break;
+static ir_node *transform_node_Cmp(ir_node *n)
+{
+ ir_node *left = get_Cmp_left(n);
+ ir_node *right = get_Cmp_right(n);
+ ir_mode *mode = get_irn_mode(left);
+ ir_tarval *tv = NULL;
+ bool changed = false;
+ bool changedc = false;
+ ir_relation relation = get_Cmp_relation(n);
+ ir_relation possible = ir_get_possible_cmp_relations(left, right);
+
+ /* mask out impossible relations */
+ ir_relation new_relation = relation & possible;
+ if (new_relation != relation) {
+ relation = new_relation;
+ changed = true;
}
- /* remove Casts of both sides */
- left = skip_Cast(left);
- right = skip_Cast(right);
-
/* Remove unnecessary conversions */
- /* TODO handle constants */
+ /* TODO handle conv+constant */
if (is_Conv(left) && is_Conv(right)) {
- ir_mode *mode = get_irn_mode(left);
ir_node *op_left = get_Conv_op(left);
ir_node *op_right = get_Conv_op(right);
ir_mode *mode_left = get_irn_mode(op_left);
if (smaller_mode(mode_left, mode) && smaller_mode(mode_right, mode)
&& mode_left != mode_b && mode_right != mode_b) {
- ir_graph *irg = current_ir_graph;
ir_node *block = get_nodes_block(n);
if (mode_left == mode_right) {
left = op_left;
right = op_right;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CONV_CONV);
} else if (smaller_mode(mode_left, mode_right)) {
- left = new_r_Conv(irg, block, op_left, mode_right, 0);
+ left = new_r_Conv(block, op_left, mode_right);
right = op_right;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CONV);
} else if (smaller_mode(mode_right, mode_left)) {
left = op_left;
- right = new_r_Conv(irg, block, op_right, mode_left, 0);
- changed |= 1;
+ right = new_r_Conv(block, op_right, mode_left);
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CONV);
}
}
}
+ /*
+ * Optimize -a CMP -b into b CMP a.
+ * This works only for modes where unary Minus cannot Overflow.
+ * Note that two-complement integers can Overflow so it will NOT work.
+ */
+ if (!mode_overflow_on_unary_Minus(mode) &&
+ is_Minus(left) && is_Minus(right)) {
+ left = get_Minus_op(left);
+ right = get_Minus_op(right);
+ relation = get_inversed_relation(relation);
+ changed = true;
+ DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
+ }
+
/* remove operation on both sides if possible */
- if (proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg) {
+ if (relation == ir_relation_equal || relation == ir_relation_less_greater) {
/*
* The following operations are NOT safe for floating point operations, for instance
* 1.0 + inf == 2.0 + inf, =/=> x == y
*/
- if (mode_is_int(get_irn_mode(left))) {
+ if (mode_is_int(mode)) {
unsigned lop = get_irn_opcode(left);
if (lop == get_irn_opcode(right)) {
/* ~a CMP ~b => a CMP b, -a CMP -b ==> a CMP b */
left = get_unop_op(left);
right = get_unop_op(right);
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
break;
case iro_Add:
/* X + a CMP X + b ==> a CMP b */
left = lr;
right = rr;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
} else if (ll == rr) {
/* X + a CMP b + X ==> a CMP b */
left = lr;
right = rl;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
} else if (lr == rl) {
/* a + X CMP X + b ==> a CMP b */
left = ll;
right = rr;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
} else if (lr == rr) {
/* a + X CMP b + X ==> a CMP b */
left = ll;
right = rl;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
}
break;
/* X - a CMP X - b ==> a CMP b */
left = lr;
right = rr;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
} else if (lr == rr) {
/* a - X CMP b - X ==> a CMP b */
left = ll;
right = rl;
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
}
break;
/* a ROTL X CMP b ROTL X ==> a CMP b */
left = get_Rotl_left(left);
right = get_Rotl_left(right);
- changed |= 1;
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
}
break;
lr = tmp;
}
if (ll == right) {
+ ir_graph *irg = get_irn_irg(n);
left = lr;
- right = create_zero_const(get_irn_mode(left));
- changed |= 1;
+ right = create_zero_const(irg, mode);
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
}
}
rr = tmp;
}
if (rl == left) {
+ ir_graph *irg = get_irn_irg(n);
left = rr;
- right = create_zero_const(get_irn_mode(left));
- changed |= 1;
+ right = create_zero_const(irg, mode);
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
}
}
+
if (is_And(left) && is_Const(right)) {
ir_node *ll = get_binop_left(left);
ir_node *lr = get_binop_right(left);
ir_node *llr = get_Shr_right(ll);
if (is_Const(llr)) {
- ir_graph *irg = current_ir_graph;
dbg_info *dbg = get_irn_dbg_info(left);
+ ir_graph *irg = get_irn_irg(left);
- tarval *c1 = get_Const_tarval(llr);
- tarval *c2 = get_Const_tarval(lr);
- tarval *c3 = get_Const_tarval(right);
- tarval *mask = tarval_shl(c2, c1);
- tarval *value = tarval_shl(c3, c1);
+ ir_tarval *c1 = get_Const_tarval(llr);
+ ir_tarval *c2 = get_Const_tarval(lr);
+ ir_tarval *c3 = get_Const_tarval(right);
+ ir_tarval *mask = tarval_shl(c2, c1);
+ ir_tarval *value = tarval_shl(c3, c1);
- left = new_rd_And(dbg, irg, block, get_Shr_left(ll), new_Const(mask), mode);
- right = new_Const(value);
- changed |= 1;
+ left = new_rd_And(dbg, block, get_Shr_left(ll), new_r_Const(irg, mask), mode);
+ right = new_r_Const(irg, value);
+ changed = true;
}
}
}
+ /* Cmp(Eor(x, y), 0) <=> Cmp(x, y) at least for the ==0,!=0
+ * cases */
+ if (is_Const(right) && is_Const_null(right) && is_Eor(left)) {
+ right = get_Eor_right(left);
+ left = get_Eor_left(left);
+ changed = true;
+ }
} /* mode_is_int(...) */
- } /* proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg */
+ }
+
+ /* Cmp(And(1bit, val), 1bit) "bit-testing" can be replaced
+ * by the simpler Cmp(And(1bit), val), 0) negated pnc */
+ if (mode_is_int(mode) && is_And(left)
+ && (relation == ir_relation_equal
+ || (mode_is_signed(mode) && relation == ir_relation_less_greater)
+ || (!mode_is_signed(mode) && (relation & ir_relation_less_equal) == ir_relation_less))) {
+ ir_node *and0 = get_And_left(left);
+ ir_node *and1 = get_And_right(left);
+ if (and1 == right) {
+ ir_node *tmp = and0;
+ and0 = and1;
+ and1 = tmp;
+ }
+ if (and0 == right && is_single_bit(and0)) {
+ ir_graph *irg = get_irn_irg(n);
+ relation =
+ relation == ir_relation_equal ? ir_relation_less_greater : ir_relation_equal;
+ right = create_zero_const(irg, mode);
+ changed |= 1;
+ }
+ }
/* replace mode_b compares with ands/ors */
- if (get_irn_mode(left) == mode_b) {
- ir_graph *irg = current_ir_graph;
+ if (mode == mode_b) {
ir_node *block = get_nodes_block(n);
ir_node *bres;
- switch (proj_nr) {
- case pn_Cmp_Le: bres = new_r_Or( irg, block, new_r_Not(irg, block, left, mode_b), right, mode_b); break;
- case pn_Cmp_Lt: bres = new_r_And(irg, block, new_r_Not(irg, block, left, mode_b), right, mode_b); break;
- case pn_Cmp_Ge: bres = new_r_Or( irg, block, left, new_r_Not(irg, block, right, mode_b), mode_b); break;
- case pn_Cmp_Gt: bres = new_r_And(irg, block, left, new_r_Not(irg, block, right, mode_b), mode_b); break;
- case pn_Cmp_Lg: bres = new_r_Eor(irg, block, left, right, mode_b); break;
- case pn_Cmp_Eq: bres = new_r_Not(irg, block, new_r_Eor(irg, block, left, right, mode_b), mode_b); break;
- default: bres = NULL;
- }
- if (bres) {
+ switch (relation) {
+ case ir_relation_less_equal:
+ bres = new_r_Or(block, new_r_Not(block, left, mode_b), right, mode_b);
+ break;
+ case ir_relation_less:
+ bres = new_r_And(block, new_r_Not(block, left, mode_b), right, mode_b);
+ break;
+ case ir_relation_greater_equal:
+ bres = new_r_Or(block, left, new_r_Not(block, right, mode_b), mode_b);
+ break;
+ case ir_relation_greater:
+ bres = new_r_And(block, left, new_r_Not(block, right, mode_b), mode_b);
+ break;
+ case ir_relation_less_greater:
+ bres = new_r_Eor(block, left, right, mode_b);
+ break;
+ case ir_relation_equal:
+ bres = new_r_Not(block, new_r_Eor(block, left, right, mode_b), mode_b);
+ break;
+ default:
+#ifdef DEBUG_libfirm
+ ir_fprintf(stderr, "Optimisation warning, unexpected mode_b Cmp %+F\n", n);
+#endif
+ bres = NULL;
+ }
+ if (bres != NULL) {
DBG_OPT_ALGSIM0(n, bres, FS_OPT_CMP_TO_BOOL);
return bres;
}
*/
if (!operands_are_normalized(left, right)) {
ir_node *t = left;
-
left = right;
right = t;
- proj_nr = get_inversed_pnc(proj_nr);
- changed |= 1;
+ relation = get_inversed_relation(relation);
+ changed = true;
}
/*
*/
tv = value_of(right);
if (tv != tarval_bad) {
- mode = get_irn_mode(right);
+ ir_mode *mode = get_irn_mode(right);
/* TODO extend to arbitrary constants */
if (is_Conv(left) && tarval_is_null(tv)) {
/*
* UpConv(x) REL 0 ==> x REL 0
+ * Don't do this for float values as it's unclear whether it is a
+ * win. (on the other side it makes detection/creation of fabs hard)
*/
if (get_mode_size_bits(mode) > get_mode_size_bits(op_mode) &&
- ((proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg) ||
- mode_is_signed(mode) || !mode_is_signed(op_mode))) {
+ ((relation == ir_relation_equal || relation == ir_relation_less_greater) ||
+ mode_is_signed(mode) || !mode_is_signed(op_mode)) &&
+ !mode_is_float(mode)) {
tv = get_mode_null(op_mode);
left = op;
mode = op_mode;
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CONV);
}
}
*/
if (is_Minus(left) &&
(!mode_overflow_on_unary_Minus(mode) ||
- (mode_is_int(mode) && (proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg)))) {
+ (mode_is_int(mode) && (relation == ir_relation_equal || relation == ir_relation_less_greater)))) {
tv = tarval_neg(tv);
if (tv != tarval_bad) {
left = get_Minus_op(left);
- proj_nr = get_inversed_pnc(proj_nr);
- changed |= 2;
+ relation = get_inversed_relation(relation);
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_C);
}
- } else if (is_Not(left) && (proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg)) {
+ } else if (is_Not(left) && (relation == ir_relation_equal || relation == ir_relation_less_greater)) {
/* Not(a) ==/!= c ==> a ==/!= Not(c) */
tv = tarval_not(tv);
if (tv != tarval_bad) {
left = get_Not_op(left);
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_C);
}
}
/* for integer modes, we have more */
if (mode_is_int(mode)) {
- /* Ne includes Unordered which is not possible on integers.
- * However, frontends often use this wrong, so fix it here */
- if (proj_nr & pn_Cmp_Uo) {
- proj_nr &= ~pn_Cmp_Uo;
- set_Proj_proj(proj, proj_nr);
- }
-
/* c > 0 : a < c ==> a <= (c-1) a >= c ==> a > (c-1) */
- if ((proj_nr == pn_Cmp_Lt || proj_nr == pn_Cmp_Ge) &&
- tarval_cmp(tv, get_mode_null(mode)) == pn_Cmp_Gt) {
+ if ((relation == ir_relation_less || relation == ir_relation_greater_equal) &&
+ tarval_cmp(tv, get_mode_null(mode)) == ir_relation_greater) {
tv = tarval_sub(tv, get_mode_one(mode), NULL);
if (tv != tarval_bad) {
- proj_nr ^= pn_Cmp_Eq;
- changed |= 2;
+ relation ^= ir_relation_equal;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CNST_MAGN);
}
}
/* c < 0 : a > c ==> a >= (c+1) a <= c ==> a < (c+1) */
- else if ((proj_nr == pn_Cmp_Gt || proj_nr == pn_Cmp_Le) &&
- tarval_cmp(tv, get_mode_null(mode)) == pn_Cmp_Lt) {
+ else if ((relation == ir_relation_greater || relation == ir_relation_less_equal) &&
+ tarval_cmp(tv, get_mode_null(mode)) == ir_relation_less) {
tv = tarval_add(tv, get_mode_one(mode));
if (tv != tarval_bad) {
- proj_nr ^= pn_Cmp_Eq;
- changed |= 2;
+ relation ^= ir_relation_equal;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CNST_MAGN);
}
}
/* the following reassociations work only for == and != */
- if (proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg) {
+ if (relation == ir_relation_equal || relation == ir_relation_less_greater) {
#if 0 /* Might be not that good in general */
/* a-b == 0 ==> a == b, a-b != 0 ==> a != b */
/* a-c1 == c2 ==> a == c2+c1, a-c1 != c2 ==> a != c2+c1 */
if (is_Sub(left)) {
ir_node *c1 = get_Sub_right(left);
- tarval *tv2 = value_of(c1);
+ ir_tarval *tv2 = value_of(c1);
if (tv2 != tarval_bad) {
tv2 = tarval_add(tv, value_of(c1));
if (tv2 != tarval_bad) {
left = get_Sub_left(left);
tv = tv2;
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_C);
}
}
ir_node *a_l = get_Add_left(left);
ir_node *a_r = get_Add_right(left);
ir_node *a;
- tarval *tv2;
+ ir_tarval *tv2;
if (is_Const(a_l)) {
a = a_r;
if (tv2 != tarval_bad) {
left = a;
tv = tv2;
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_C);
}
}
}
/* -a == c ==> a == -c, -a != c ==> a != -c */
else if (is_Minus(left)) {
- tarval *tv2 = tarval_sub(get_mode_null(mode), tv, NULL);
+ ir_tarval *tv2 = tarval_sub(get_mode_null(mode), tv, NULL);
if (tv2 != tarval_bad) {
left = get_Minus_op(left);
tv = tv2;
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_C);
}
}
}
} /* == or != */
- /* the following reassociations work only for <= */
- else if (proj_nr == pn_Cmp_Le || proj_nr == pn_Cmp_Lt) {
- if (tv != tarval_bad) {
- /* c >= 0 : Abs(a) <= c ==> (unsigned)(a + c) <= 2*c */
- if (is_Abs(left)) { // TODO something is missing here
- }
- }
- }
} /* mode_is_int */
- if (proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg) {
+ if (relation == ir_relation_equal || relation == ir_relation_less_greater) {
switch (get_irn_opcode(left)) {
ir_node *c1;
* And(x, C1) == C2 ==> FALSE if C2 & C1 != C2
* And(x, C1) != C2 ==> TRUE if C2 & C1 != C2
*/
- tarval *mask = tarval_and(get_Const_tarval(c1), tv);
+ ir_tarval *mask = tarval_and(get_Const_tarval(c1), tv);
if (mask != tv) {
/* TODO: move to constant evaluation */
- tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
- c1 = new_Const(tv);
- DBG_OPT_CSTEVAL(proj, c1);
+ ir_graph *irg = get_irn_irg(n);
+ tv = relation == ir_relation_equal ? get_tarval_b_false() : get_tarval_b_true();
+ c1 = new_r_Const(irg, tv);
+ DBG_OPT_CSTEVAL(n, c1);
return c1;
}
if (get_Const_tarval(c1) == tv) {
/* fine: do the transformation */
tv = get_mode_null(get_tarval_mode(tv));
- proj_nr ^= pn_Cmp_Leg;
- changed |= 2;
+ relation ^= ir_relation_less_equal_greater;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_CNST_MAGN);
}
}
*/
if (! tarval_is_null(get_Const_tarval(c1))) {
/* TODO: move to constant evaluation */
- tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
- c1 = new_Const(tv);
- DBG_OPT_CSTEVAL(proj, c1);
+ ir_graph *irg = get_irn_irg(n);
+ tv = relation == ir_relation_equal ? get_tarval_b_false() : get_tarval_b_true();
+ c1 = new_r_Const(irg, tv);
+ DBG_OPT_CSTEVAL(n, c1);
return c1;
}
}
*/
c1 = get_Shl_right(left);
if (is_Const(c1)) {
- tarval *tv1 = get_Const_tarval(c1);
- ir_mode *mode = get_irn_mode(left);
- tarval *minus1 = get_mode_all_one(mode);
- tarval *amask = tarval_shr(minus1, tv1);
- tarval *cmask = tarval_shl(minus1, tv1);
- ir_node *sl, *blk;
+ ir_graph *irg = get_irn_irg(c1);
+ ir_tarval *tv1 = get_Const_tarval(c1);
+ ir_mode *mode = get_irn_mode(left);
+ ir_tarval *minus1 = get_mode_all_one(mode);
+ ir_tarval *amask = tarval_shr(minus1, tv1);
+ ir_tarval *cmask = tarval_shl(minus1, tv1);
+ ir_node *sl, *blk;
if (tarval_and(tv, cmask) != tv) {
/* condition not met */
- tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
- c1 = new_Const(tv);
- DBG_OPT_CSTEVAL(proj, c1);
+ tv = relation == ir_relation_equal ? get_tarval_b_false() : get_tarval_b_true();
+ c1 = new_r_Const(irg, tv);
+ DBG_OPT_CSTEVAL(n, c1);
return c1;
}
sl = get_Shl_left(left);
blk = get_nodes_block(n);
- left = new_rd_And(get_irn_dbg_info(left), current_ir_graph, blk, sl, new_Const(amask), mode);
+ left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_r_Const(irg, amask), mode);
tv = tarval_shr(tv, tv1);
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_SHF_TO_AND);
}
break;
*/
c1 = get_Shr_right(left);
if (is_Const(c1)) {
- tarval *tv1 = get_Const_tarval(c1);
- ir_mode *mode = get_irn_mode(left);
- tarval *minus1 = get_mode_all_one(mode);
- tarval *amask = tarval_shl(minus1, tv1);
- tarval *cmask = tarval_shr(minus1, tv1);
- ir_node *sl, *blk;
+ ir_graph *irg = get_irn_irg(c1);
+ ir_tarval *tv1 = get_Const_tarval(c1);
+ ir_mode *mode = get_irn_mode(left);
+ ir_tarval *minus1 = get_mode_all_one(mode);
+ ir_tarval *amask = tarval_shl(minus1, tv1);
+ ir_tarval *cmask = tarval_shr(minus1, tv1);
+ ir_node *sl, *blk;
if (tarval_and(tv, cmask) != tv) {
/* condition not met */
- tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
- c1 = new_Const(tv);
- DBG_OPT_CSTEVAL(proj, c1);
+ tv = relation == ir_relation_equal ? get_tarval_b_false() : get_tarval_b_true();
+ c1 = new_r_Const(irg, tv);
+ DBG_OPT_CSTEVAL(n, c1);
return c1;
}
sl = get_Shr_left(left);
blk = get_nodes_block(n);
- left = new_rd_And(get_irn_dbg_info(left), current_ir_graph, blk, sl, new_Const(amask), mode);
+ left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_r_Const(irg, amask), mode);
tv = tarval_shl(tv, tv1);
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_SHF_TO_AND);
}
break;
*/
c1 = get_Shrs_right(left);
if (is_Const(c1)) {
- tarval *tv1 = get_Const_tarval(c1);
- ir_mode *mode = get_irn_mode(left);
- tarval *minus1 = get_mode_all_one(mode);
- tarval *amask = tarval_shl(minus1, tv1);
- tarval *cond = new_tarval_from_long(get_mode_size_bits(mode), get_tarval_mode(tv1));
+ ir_graph *irg = get_irn_irg(c1);
+ ir_tarval *tv1 = get_Const_tarval(c1);
+ ir_mode *mode = get_irn_mode(left);
+ ir_tarval *minus1 = get_mode_all_one(mode);
+ ir_tarval *amask = tarval_shl(minus1, tv1);
+ ir_tarval *cond = new_tarval_from_long(get_mode_size_bits(mode), get_tarval_mode(tv1));
ir_node *sl, *blk;
cond = tarval_sub(cond, tv1, NULL);
if (!tarval_is_all_one(cond) && !tarval_is_null(cond)) {
/* condition not met */
- tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
- c1 = new_Const(tv);
- DBG_OPT_CSTEVAL(proj, c1);
+ tv = relation == ir_relation_equal ? get_tarval_b_false() : get_tarval_b_true();
+ c1 = new_r_Const(irg, tv);
+ DBG_OPT_CSTEVAL(n, c1);
return c1;
}
sl = get_Shrs_left(left);
blk = get_nodes_block(n);
- left = new_rd_And(get_irn_dbg_info(left), current_ir_graph, blk, sl, new_Const(amask), mode);
+ left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_r_Const(irg, amask), mode);
tv = tarval_shl(tv, tv1);
- changed |= 2;
+ changedc = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_SHF_TO_AND);
}
break;
} /* tarval != bad */
}
- if (changed & 2) /* need a new Const */
- right = new_Const(tv);
+ if (changedc) { /* need a new Const */
+ ir_graph *irg = get_irn_irg(n);
+ right = new_r_Const(irg, tv);
+ changed = true;
+ }
- if ((proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg) && is_Const(right) && is_Const_null(right) && is_Proj(left)) {
+ if ((relation == ir_relation_equal || relation == ir_relation_less_greater) && is_Const(right) && is_Const_null(right) && is_Proj(left)) {
ir_node *op = get_Proj_pred(left);
- if ((is_Mod(op) && get_Proj_proj(left) == pn_Mod_res) ||
- (is_DivMod(op) && get_Proj_proj(left) == pn_DivMod_res_mod)) {
+ if (is_Mod(op) && get_Proj_proj(left) == pn_Mod_res) {
ir_node *c = get_binop_right(op);
if (is_Const(c)) {
- tarval *tv = get_Const_tarval(c);
+ ir_tarval *tv = get_Const_tarval(c);
if (tarval_is_single_bit(tv)) {
/* special case: (x % 2^n) CMP 0 ==> x & (2^n-1) CMP 0 */
ir_node *v = get_binop_left(op);
ir_node *blk = get_irn_n(op, -1);
+ ir_graph *irg = get_irn_irg(op);
ir_mode *mode = get_irn_mode(v);
tv = tarval_sub(tv, get_mode_one(mode), NULL);
- left = new_rd_And(get_irn_dbg_info(op), current_ir_graph, blk, v, new_Const(tv), mode);
- changed |= 1;
+ left = new_rd_And(get_irn_dbg_info(op), blk, v, new_r_Const(irg, tv), mode);
+ changed = true;
DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_MOD_TO_AND);
}
}
}
if (changed) {
- ir_node *block = get_nodes_block(n);
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
/* create a new compare */
- n = new_rd_Cmp(get_irn_dbg_info(n), current_ir_graph, block, left, right);
- proj = new_rd_Proj(get_irn_dbg_info(proj), current_ir_graph, block, n, get_irn_mode(proj), proj_nr);
+ n = new_rd_Cmp(dbgi, block, left, right, relation);
}
- return proj;
-} /* transform_node_Proj_Cmp */
+ return n;
+}
/**
* Optimize CopyB(mem, x, x) into a Nop.
*/
-static ir_node *transform_node_Proj_CopyB(ir_node *proj) {
+static ir_node *transform_node_Proj_CopyB(ir_node *proj)
+{
ir_node *copyb = get_Proj_pred(proj);
ir_node *a = get_CopyB_dst(copyb);
ir_node *b = get_CopyB_src(copyb);
case pn_CopyB_X_regular:
/* Turn CopyB into a tuple (mem, jmp, bad, bad) */
DBG_OPT_EXC_REM(proj);
- proj = new_r_Jmp(current_ir_graph, get_nodes_block(copyb));
+ proj = new_r_Jmp(get_nodes_block(copyb));
break;
- case pn_CopyB_M_except:
case pn_CopyB_X_except:
DBG_OPT_EXC_REM(proj);
- proj = get_irg_bad(current_ir_graph);
+ proj = get_irg_bad(get_irn_irg(proj));
break;
default:
break;
/**
* Optimize Bounds(idx, idx, upper) into idx.
*/
-static ir_node *transform_node_Proj_Bound(ir_node *proj) {
+static ir_node *transform_node_Proj_Bound(ir_node *proj)
+{
ir_node *oldn = proj;
ir_node *bound = get_Proj_pred(proj);
ir_node *idx = get_Bound_index(bound);
ret_tuple = 1;
else if (is_Bound(pred)) {
/*
- * idx was Bounds checked in the same MacroBlock previously,
- * it is still valid if lower <= pred_lower && pred_upper <= upper.
+ * idx was Bounds checked previously, it is still valid if
+ * lower <= pred_lower && pred_upper <= upper.
*/
ir_node *lower = get_Bound_lower(bound);
ir_node *upper = get_Bound_upper(bound);
if (get_Bound_lower(pred) == lower &&
- get_Bound_upper(pred) == upper &&
- get_irn_MacroBlock(bound) == get_irn_MacroBlock(pred)) {
+ get_Bound_upper(pred) == upper) {
/*
* One could expect that we simply return the previous
* Bound here. However, this would be wrong, as we could
break;
case pn_Bound_X_except:
DBG_OPT_EXC_REM(proj);
- proj = get_irg_bad(current_ir_graph);
+ proj = get_irg_bad(get_irn_irg(proj));
break;
case pn_Bound_res:
proj = idx;
break;
case pn_Bound_X_regular:
DBG_OPT_EXC_REM(proj);
- proj = new_r_Jmp(current_ir_graph, get_nodes_block(bound));
+ proj = new_r_Jmp(get_nodes_block(bound));
break;
default:
break;
* Does all optimizations on nodes that must be done on it's Proj's
* because of creating new nodes.
*/
-static ir_node *transform_node_Proj(ir_node *proj) {
+static ir_node *transform_node_Proj(ir_node *proj)
+{
ir_node *n = get_Proj_pred(proj);
if (n->op->ops.transform_node_Proj)
/**
* Move Confirms down through Phi nodes.
*/
-static ir_node *transform_node_Phi(ir_node *phi) {
+static ir_node *transform_node_Phi(ir_node *phi)
+{
int i, n;
ir_mode *mode = get_irn_mode(phi);
/* Beware of Phi0 */
if (n > 0) {
- ir_node *pred = get_irn_n(phi, 0);
- ir_node *bound, *new_Phi, *block, **in;
- pn_Cmp pnc;
+ ir_node *pred = get_irn_n(phi, 0);
+ ir_node *bound, *new_phi, *block, **in;
+ ir_relation relation;
if (! is_Confirm(pred))
return phi;
- bound = get_Confirm_bound(pred);
- pnc = get_Confirm_cmp(pred);
+ bound = get_Confirm_bound(pred);
+ relation = get_Confirm_relation(pred);
NEW_ARR_A(ir_node *, in, n);
in[0] = get_Confirm_value(pred);
if (! is_Confirm(pred) ||
get_Confirm_bound(pred) != bound ||
- get_Confirm_cmp(pred) != pnc)
+ get_Confirm_relation(pred) != relation)
return phi;
in[i] = get_Confirm_value(pred);
}
/* move the Confirm nodes "behind" the Phi */
block = get_irn_n(phi, -1);
- new_Phi = new_r_Phi(current_ir_graph, block, n, in, get_irn_mode(phi));
- return new_r_Confirm(current_ir_graph, block, new_Phi, bound, pnc);
+ new_phi = new_r_Phi(block, n, in, get_irn_mode(phi));
+ return new_r_Confirm(block, new_phi, bound, relation);
}
}
return phi;
-} /* transform_node_Phi */
+}
/**
* Returns the operands of a commutative bin-op, if one operand is
* a const, it is returned as the second one.
*/
-static void get_comm_Binop_Ops(ir_node *binop, ir_node **a, ir_node **c) {
+static void get_comm_Binop_Ops(ir_node *binop, ir_node **a, ir_node **c)
+{
ir_node *op_a = get_binop_left(binop);
ir_node *op_b = get_binop_right(binop);
* AND c1 ===> OR if (c1 | c2) == 0x111..11
* OR
*/
-static ir_node *transform_node_Or_bf_store(ir_node *or) {
- ir_node *and, *c1;
+static ir_node *transform_node_Or_bf_store(ir_node *irn_or)
+{
+ ir_node *irn_and, *c1;
ir_node *or_l, *c2;
ir_node *and_l, *c3;
ir_node *value, *c4;
ir_node *new_and, *new_const, *block;
- ir_mode *mode = get_irn_mode(or);
+ ir_mode *mode = get_irn_mode(irn_or);
- tarval *tv1, *tv2, *tv3, *tv4, *tv, *n_tv4, *n_tv2;
+ ir_tarval *tv1, *tv2, *tv3, *tv4, *tv;
- while (1) {
- get_comm_Binop_Ops(or, &and, &c1);
- if (!is_Const(c1) || !is_And(and))
- return or;
+ for (;;) {
+ ir_graph *irg;
+ get_comm_Binop_Ops(irn_or, &irn_and, &c1);
+ if (!is_Const(c1) || !is_And(irn_and))
+ return irn_or;
- get_comm_Binop_Ops(and, &or_l, &c2);
+ get_comm_Binop_Ops(irn_and, &or_l, &c2);
if (!is_Const(c2))
- return or;
+ return irn_or;
tv1 = get_Const_tarval(c1);
tv2 = get_Const_tarval(c2);
tv = tarval_or(tv1, tv2);
if (tarval_is_all_one(tv)) {
/* the AND does NOT clear a bit with isn't set by the OR */
- set_Or_left(or, or_l);
- set_Or_right(or, c1);
+ set_Or_left(irn_or, or_l);
+ set_Or_right(irn_or, c1);
/* check for more */
continue;
}
if (!is_Or(or_l))
- return or;
+ return irn_or;
get_comm_Binop_Ops(or_l, &and_l, &c3);
if (!is_Const(c3) || !is_And(and_l))
- return or;
+ return irn_or;
get_comm_Binop_Ops(and_l, &value, &c4);
if (!is_Const(c4))
- return or;
+ return irn_or;
/* ok, found the pattern, check for conditions */
- assert(mode == get_irn_mode(and));
+ assert(mode == get_irn_mode(irn_and));
assert(mode == get_irn_mode(or_l));
assert(mode == get_irn_mode(and_l));
tv = tarval_or(tv4, tv2);
if (!tarval_is_all_one(tv)) {
/* have at least one 0 at the same bit position */
- return or;
+ return irn_or;
}
- n_tv4 = tarval_not(tv4);
- if (tv3 != tarval_and(tv3, n_tv4)) {
+ if (tv3 != tarval_andnot(tv3, tv4)) {
/* bit in the or_mask is outside the and_mask */
- return or;
+ return irn_or;
}
- n_tv2 = tarval_not(tv2);
- if (tv1 != tarval_and(tv1, n_tv2)) {
+ if (tv1 != tarval_andnot(tv1, tv2)) {
/* bit in the or_mask is outside the and_mask */
- return or;
+ return irn_or;
}
/* ok, all conditions met */
- block = get_irn_n(or, -1);
+ block = get_irn_n(irn_or, -1);
+ irg = get_irn_irg(block);
- new_and = new_r_And(current_ir_graph, block,
- value, new_Const(tarval_and(tv4, tv2)), mode);
+ new_and = new_r_And(block, value, new_r_Const(irg, tarval_and(tv4, tv2)), mode);
- new_const = new_Const(tarval_or(tv3, tv1));
+ new_const = new_r_Const(irg, tarval_or(tv3, tv1));
- set_Or_left(or, new_and);
- set_Or_right(or, new_const);
+ set_Or_left(irn_or, new_and);
+ set_Or_right(irn_or, new_const);
/* check for more */
}
/**
* Optimize an Or(shl(x, c), shr(x, bits - c)) into a Rotl
*/
-static ir_node *transform_node_Or_Rotl(ir_node *or) {
- ir_mode *mode = get_irn_mode(or);
+static ir_node *transform_node_Or_Rotl(ir_node *irn_or)
+{
+ ir_mode *mode = get_irn_mode(irn_or);
ir_node *shl, *shr, *block;
- ir_node *irn, *x, *c1, *c2, *v, *sub, *n, *rotval;
- tarval *tv1, *tv2;
+ ir_node *irn, *x, *c1, *c2, *n;
+ ir_tarval *tv1, *tv2;
+
+ /* some backends can't handle rotl */
+ if (!be_get_backend_param()->support_rotl)
+ return irn_or;
if (! mode_is_int(mode))
- return or;
+ return irn_or;
- shl = get_binop_left(or);
- shr = get_binop_right(or);
+ shl = get_binop_left(irn_or);
+ shr = get_binop_right(irn_or);
if (is_Shr(shl)) {
if (!is_Shl(shr))
- return or;
+ return irn_or;
irn = shl;
shl = shr;
shr = irn;
} else if (!is_Shl(shl)) {
- return or;
+ return irn_or;
} else if (!is_Shr(shr)) {
- return or;
+ return irn_or;
}
x = get_Shl_left(shl);
if (x != get_Shr_left(shr))
- return or;
+ return irn_or;
c1 = get_Shl_right(shl);
c2 = get_Shr_right(shr);
if (is_Const(c1) && is_Const(c2)) {
tv1 = get_Const_tarval(c1);
if (! tarval_is_long(tv1))
- return or;
+ return irn_or;
tv2 = get_Const_tarval(c2);
if (! tarval_is_long(tv2))
- return or;
+ return irn_or;
if (get_tarval_long(tv1) + get_tarval_long(tv2)
!= (int) get_mode_size_bits(mode))
- return or;
+ return irn_or;
/* yet, condition met */
- block = get_nodes_block(or);
+ block = get_nodes_block(irn_or);
- n = new_r_Rotl(current_ir_graph, block, x, c1, mode);
+ n = new_r_Rotl(block, x, c1, mode);
- DBG_OPT_ALGSIM1(or, shl, shr, n, FS_OPT_OR_SHFT_TO_ROTL);
+ DBG_OPT_ALGSIM1(irn_or, shl, shr, n, FS_OPT_OR_SHFT_TO_ROTL);
return n;
}
- if (is_Sub(c1)) {
- v = c2;
- sub = c1;
- rotval = sub; /* a Rot right is not supported, so use a rot left */
- } else if (is_Sub(c2)) {
- v = c1;
- sub = c2;
- rotval = v;
- } else return or;
-
- if (get_Sub_right(sub) != v)
- return or;
-
- c1 = get_Sub_left(sub);
- if (!is_Const(c1))
- return or;
-
- tv1 = get_Const_tarval(c1);
- if (! tarval_is_long(tv1))
- return or;
-
- if (get_tarval_long(tv1) != (int) get_mode_size_bits(mode))
- return or;
+ /* Note: the obvious rot formulation (a << x) | (a >> (32-x)) gets
+ * transformed to (a << x) | (a >> -x) by transform_node_shift_modulo() */
+ if (!ir_is_negated_value(c1, c2)) {
+ return irn_or;
+ }
/* yet, condition met */
- block = get_nodes_block(or);
-
- n = new_r_Rotl(current_ir_graph, block, x, rotval, mode);
-
- DBG_OPT_ALGSIM0(or, n, FS_OPT_OR_SHFT_TO_ROTL);
+ block = get_nodes_block(irn_or);
+ n = new_r_Rotl(block, x, c1, mode);
+ DBG_OPT_ALGSIM0(irn_or, n, FS_OPT_OR_SHFT_TO_ROTL);
return n;
} /* transform_node_Or_Rotl */
/**
* Transform an Or.
*/
-static ir_node *transform_node_Or(ir_node *n) {
+static ir_node *transform_node_Or(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Or_left(n);
ir_node *b = get_Or_right(n);
mode = get_irn_mode(n);
a = get_Not_op(a);
b = get_Not_op(b);
- n = new_rd_And(get_irn_dbg_info(n), current_ir_graph, block, a, b, mode);
- n = new_rd_Not(get_irn_dbg_info(n), current_ir_graph, block, n, mode);
+ n = new_rd_And(get_irn_dbg_info(n), block, a, b, mode);
+ n = new_rd_Not(get_irn_dbg_info(n), block, n, mode);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_DEMORGAN);
return n;
}
- /* we can evaluate 2 Projs of the same Cmp */
- if (get_irn_mode(n) == mode_b && is_Proj(a) && is_Proj(b)) {
- ir_node *pred_a = get_Proj_pred(a);
- ir_node *pred_b = get_Proj_pred(b);
- if (pred_a == pred_b) {
- dbg_info *dbgi = get_irn_dbg_info(n);
- ir_node *block = get_nodes_block(pred_a);
- pn_Cmp pn_a = get_Proj_proj(a);
- pn_Cmp pn_b = get_Proj_proj(b);
- /* yes, we can simply calculate with pncs */
- pn_Cmp new_pnc = pn_a | pn_b;
-
- return new_rd_Proj(dbgi, current_ir_graph, block, pred_a, mode_b,
- new_pnc);
+ /* we can combine the relations of two compares with the same operands */
+ if (is_Cmp(a) && is_Cmp(b)) {
+ ir_node *a_left = get_Cmp_left(a);
+ ir_node *a_right = get_Cmp_left(a);
+ ir_node *b_left = get_Cmp_left(b);
+ ir_node *b_right = get_Cmp_right(b);
+ if (a_left == b_left && b_left == b_right) {
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *block = get_nodes_block(n);
+ ir_relation a_relation = get_Cmp_relation(a);
+ ir_relation b_relation = get_Cmp_relation(b);
+ ir_relation new_relation = a_relation | b_relation;
+ return new_rd_Cmp(dbgi, block, a_left, a_right, new_relation);
}
}
mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_or, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_or, a, b, c, mode);
n = transform_node_Or_bf_store(n);
n = transform_node_Or_Rotl(n);
*
* Should be moved to reassociation?
*/
-static ir_node *transform_node_shift(ir_node *n) {
+static ir_node *transform_node_shift(ir_node *n)
+{
ir_node *left, *right;
ir_mode *mode;
- tarval *tv1, *tv2, *res;
+ ir_tarval *tv1, *tv2, *res;
ir_node *in[2], *irn, *block;
+ ir_graph *irg;
left = get_binop_left(n);
res = tarval_add(tv1, tv2);
mode = get_irn_mode(n);
+ irg = get_irn_irg(n);
/* beware: a simple replacement works only, if res < modulo shift */
if (!is_Rotl(n)) {
int modulo_shf = get_mode_modulo_shift(mode);
if (modulo_shf > 0) {
- tarval *modulo = new_tarval_from_long(modulo_shf,
- get_tarval_mode(res));
+ ir_tarval *modulo = new_tarval_from_long(modulo_shf,
+ get_tarval_mode(res));
assert(modulo_shf >= (int) get_mode_size_bits(mode));
/* shifting too much */
- if (!(tarval_cmp(res, modulo) & pn_Cmp_Lt)) {
+ if (!(tarval_cmp(res, modulo) & ir_relation_less)) {
if (is_Shrs(n)) {
- ir_graph *irg = get_irn_irg(n);
ir_node *block = get_nodes_block(n);
dbg_info *dbgi = get_irn_dbg_info(n);
ir_mode *smode = get_irn_mode(right);
- ir_node *cnst = new_Const_long(smode, get_mode_size_bits(mode) - 1);
- return new_rd_Shrs(dbgi, irg, block, get_binop_left(left),
- cnst, mode);
+ ir_node *cnst = new_r_Const_long(irg, smode, get_mode_size_bits(mode) - 1);
+ return new_rd_Shrs(dbgi, block, get_binop_left(left), cnst, mode);
}
- return new_Const(get_mode_null(mode));
+ return new_r_Const(irg, get_mode_null(mode));
}
}
} else {
block = get_nodes_block(n);
in[0] = get_binop_left(left);
- in[1] = new_Const(res);
+ in[1] = new_r_Const(irg, res);
- irn = new_ir_node(NULL, current_ir_graph, block, get_irn_op(n), mode, 2, in);
+ irn = new_ir_node(NULL, get_Block_irg(block), block, get_irn_op(n), mode, 2, in);
DBG_OPT_ALGSIM0(n, irn, FS_OPT_REASSOC_SHIFT);
* - Shl, Shr, Shrs, rotl instead of >>
* (with a special case for Or/Xor + Shrs)
*/
-static ir_node *transform_node_bitop_shift(ir_node *n) {
- ir_node *left;
- ir_node *right = get_binop_right(n);
- ir_mode *mode = get_irn_mode(n);
- ir_node *bitop_left;
- ir_node *bitop_right;
- ir_op *op_left;
- ir_graph *irg;
- ir_node *block;
- dbg_info *dbgi;
- ir_node *new_shift;
- ir_node *new_bitop;
- ir_node *new_const;
- tarval *tv1;
- tarval *tv2;
- tarval *tv_shift;
+static ir_node *transform_node_bitop_shift(ir_node *n)
+{
+ ir_node *left;
+ ir_node *right = get_binop_right(n);
+ ir_mode *mode = get_irn_mode(n);
+ ir_node *bitop_left;
+ ir_node *bitop_right;
+ ir_op *op_left;
+ ir_node *block;
+ dbg_info *dbgi;
+ ir_graph *irg;
+ ir_node *new_shift;
+ ir_node *new_bitop;
+ ir_node *new_const;
+ ir_tarval *tv1;
+ ir_tarval *tv2;
+ ir_tarval *tv_shift;
assert(is_Shrs(n) || is_Shr(n) || is_Shl(n) || is_Rotl(n));
bitop_left = get_binop_left(left);
- irg = get_irn_irg(n);
block = get_nodes_block(n);
dbgi = get_irn_dbg_info(n);
tv1 = get_Const_tarval(bitop_right);
assert(get_tarval_mode(tv1) == mode);
if (is_Shl(n)) {
- new_shift = new_rd_Shl(dbgi, irg, block, bitop_left, right, mode);
+ new_shift = new_rd_Shl(dbgi, block, bitop_left, right, mode);
tv_shift = tarval_shl(tv1, tv2);
- } else if(is_Shr(n)) {
- new_shift = new_rd_Shr(dbgi, irg, block, bitop_left, right, mode);
+ } else if (is_Shr(n)) {
+ new_shift = new_rd_Shr(dbgi, block, bitop_left, right, mode);
tv_shift = tarval_shr(tv1, tv2);
- } else if(is_Shrs(n)) {
- new_shift = new_rd_Shrs(dbgi, irg, block, bitop_left, right, mode);
+ } else if (is_Shrs(n)) {
+ new_shift = new_rd_Shrs(dbgi, block, bitop_left, right, mode);
tv_shift = tarval_shrs(tv1, tv2);
} else {
assert(is_Rotl(n));
- new_shift = new_rd_Rotl(dbgi, irg, block, bitop_left, right, mode);
+ new_shift = new_rd_Rotl(dbgi, block, bitop_left, right, mode);
tv_shift = tarval_rotl(tv1, tv2);
}
assert(get_tarval_mode(tv_shift) == mode);
- new_const = new_Const(tv_shift);
+ irg = get_irn_irg(n);
+ new_const = new_r_Const(irg, tv_shift);
if (op_left == op_And) {
- new_bitop = new_rd_And(dbgi, irg, block, new_shift, new_const, mode);
- } else if(op_left == op_Or) {
- new_bitop = new_rd_Or(dbgi, irg, block, new_shift, new_const, mode);
+ new_bitop = new_rd_And(dbgi, block, new_shift, new_const, mode);
+ } else if (op_left == op_Or) {
+ new_bitop = new_rd_Or(dbgi, block, new_shift, new_const, mode);
} else {
assert(op_left == op_Eor);
- new_bitop = new_rd_Eor(dbgi, irg, block, new_shift, new_const, mode);
+ new_bitop = new_rd_Eor(dbgi, block, new_shift, new_const, mode);
}
return new_bitop;
* (x >> c1) << c2 <=> x OP (c2-c1) & ((-1 >> c1) << c2)
* (also with x >>s c1 when c1>=c2)
*/
-static ir_node *transform_node_shl_shr(ir_node *n) {
- ir_node *left;
- ir_node *right = get_binop_right(n);
- ir_node *x;
- ir_graph *irg;
- ir_node *block;
- ir_mode *mode;
- dbg_info *dbgi;
- ir_node *new_const;
- ir_node *new_shift;
- ir_node *new_and;
- tarval *tv_shl;
- tarval *tv_shr;
- tarval *tv_shift;
- tarval *tv_mask;
- pn_Cmp pnc;
- int need_shrs = 0;
+static ir_node *transform_node_shl_shr(ir_node *n)
+{
+ ir_node *left;
+ ir_node *right = get_binop_right(n);
+ ir_node *x;
+ ir_node *block;
+ ir_mode *mode;
+ dbg_info *dbgi;
+ ir_node *new_const;
+ ir_node *new_shift;
+ ir_node *new_and;
+ ir_tarval *tv_shl;
+ ir_tarval *tv_shr;
+ ir_tarval *tv_shift;
+ ir_tarval *tv_mask;
+ ir_graph *irg;
+ ir_relation relation;
+ int need_shrs = 0;
assert(is_Shl(n) || is_Shr(n) || is_Shrs(n));
if (is_Shrs(left)) {
/* shrs variant only allowed if c1 >= c2 */
- if (! (tarval_cmp(tv_shl, tv_shr) & pn_Cmp_Ge))
+ if (! (tarval_cmp(tv_shl, tv_shr) & ir_relation_greater_equal))
return n;
tv_mask = tarval_shrs(get_mode_all_one(mode), tv_shr);
tv_mask = tarval_shr(get_mode_all_one(mode), tv_shr);
}
tv_mask = tarval_shl(tv_mask, tv_shl);
- } else if(is_Shr(n) && is_Shl(left)) {
+ } else if (is_Shr(n) && is_Shl(left)) {
ir_node *shl_right = get_Shl_right(left);
if (!is_Const(shl_right))
assert(tv_mask != tarval_bad);
assert(get_tarval_mode(tv_mask) == mode);
- irg = get_irn_irg(n);
block = get_nodes_block(n);
+ irg = get_irn_irg(block);
dbgi = get_irn_dbg_info(n);
- pnc = tarval_cmp(tv_shl, tv_shr);
- if (pnc == pn_Cmp_Lt || pnc == pn_Cmp_Eq) {
+ relation = tarval_cmp(tv_shl, tv_shr);
+ if (relation == ir_relation_less || relation == ir_relation_equal) {
tv_shift = tarval_sub(tv_shr, tv_shl, NULL);
- new_const = new_Const(tv_shift);
+ new_const = new_r_Const(irg, tv_shift);
if (need_shrs) {
- new_shift = new_rd_Shrs(dbgi, irg, block, x, new_const, mode);
+ new_shift = new_rd_Shrs(dbgi, block, x, new_const, mode);
} else {
- new_shift = new_rd_Shr(dbgi, irg, block, x, new_const, mode);
+ new_shift = new_rd_Shr(dbgi, block, x, new_const, mode);
}
} else {
- assert(pnc == pn_Cmp_Gt);
+ assert(relation == ir_relation_greater);
tv_shift = tarval_sub(tv_shl, tv_shr, NULL);
- new_const = new_Const(tv_shift);
- new_shift = new_rd_Shl(dbgi, irg, block, x, new_const, mode);
+ new_const = new_r_Const(irg, tv_shift);
+ new_shift = new_rd_Shl(dbgi, block, x, new_const, mode);
}
- new_const = new_Const(tv_mask);
- new_and = new_rd_And(dbgi, irg, block, new_shift, new_const, mode);
+ new_const = new_r_Const(irg, tv_mask);
+ new_and = new_rd_And(dbgi, block, new_shift, new_const, mode);
return new_and;
}
+static ir_tarval *get_modulo_tv_value(ir_tarval *tv, int modulo_val)
+{
+ ir_mode *mode = get_tarval_mode(tv);
+ ir_tarval *modulo_tv = new_tarval_from_long(modulo_val, mode);
+ return tarval_mod(tv, modulo_tv);
+}
+
+typedef ir_node*(*new_shift_func)(dbg_info *dbgi, ir_node *block,
+ ir_node *left, ir_node *right, ir_mode *mode);
+
+/**
+ * Normalisation: if we have a shl/shr with modulo_shift behaviour
+ * then we can use that to minimize the value of Add(x, const) or
+ * Sub(Const, x). In particular this often avoids 1 instruction in some
+ * backends for the Shift(x, Sub(Const, y)) case because it can be replaced
+ * by Shift(x, Minus(y)) which doesnt't need an explicit Const constructed.
+ */
+static ir_node *transform_node_shift_modulo(ir_node *n,
+ new_shift_func new_shift)
+{
+ ir_mode *mode = get_irn_mode(n);
+ int modulo = get_mode_modulo_shift(mode);
+ ir_node *newop = NULL;
+ ir_mode *mode_right;
+ ir_node *block;
+ ir_node *right;
+ ir_graph *irg;
+
+ if (modulo == 0)
+ return n;
+ if (get_mode_arithmetic(mode) != irma_twos_complement)
+ return n;
+ if (!is_po2(modulo))
+ return n;
+
+ irg = get_irn_irg(n);
+ block = get_nodes_block(n);
+ right = get_binop_right(n);
+ mode_right = get_irn_mode(right);
+ if (is_Const(right)) {
+ ir_tarval *tv = get_Const_tarval(right);
+ ir_tarval *tv_mod = get_modulo_tv_value(tv, modulo);
+
+ if (tv_mod == tv)
+ return n;
+
+ newop = new_r_Const(irg, tv_mod);
+ } else if (is_Add(right)) {
+ ir_node *add_right = get_Add_right(right);
+ if (is_Const(add_right)) {
+ ir_tarval *tv = get_Const_tarval(add_right);
+ ir_tarval *tv_mod = get_modulo_tv_value(tv, modulo);
+ ir_node *newconst;
+ if (tv_mod == tv)
+ return n;
+
+ newconst = new_r_Const(irg, tv_mod);
+ newop = new_r_Add(block, get_Add_left(right), newconst,
+ mode_right);
+ }
+ } else if (is_Sub(right)) {
+ ir_node *sub_left = get_Sub_left(right);
+ if (is_Const(sub_left)) {
+ ir_tarval *tv = get_Const_tarval(sub_left);
+ ir_tarval *tv_mod = get_modulo_tv_value(tv, modulo);
+ ir_node *newconst;
+ if (tv_mod == tv)
+ return n;
+
+ newconst = new_r_Const(irg, tv_mod);
+ newop = new_r_Sub(block, newconst, get_Sub_right(right),
+ mode_right);
+ }
+ } else {
+ return n;
+ }
+
+ if (newop != NULL) {
+ dbg_info *dbgi = get_irn_dbg_info(n);
+ ir_node *left = get_binop_left(n);
+ return new_shift(dbgi, block, left, newop, mode);
+ }
+ return n;
+}
+
/**
* Transform a Shr.
*/
-static ir_node *transform_node_Shr(ir_node *n) {
+static ir_node *transform_node_Shr(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *left = get_Shr_left(n);
ir_node *right = get_Shr_right(n);
ir_mode *mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_shr, left, right, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_shr, left, right, c, mode);
n = transform_node_shift(n);
+ if (is_Shr(n))
+ n = transform_node_shift_modulo(n, new_rd_Shr);
if (is_Shr(n))
n = transform_node_shl_shr(n);
if (is_Shr(n))
/**
* Transform a Shrs.
*/
-static ir_node *transform_node_Shrs(ir_node *n) {
+static ir_node *transform_node_Shrs(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Shrs_left(n);
ir_node *b = get_Shrs_right(n);
ir_mode *mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_shrs, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_shrs, a, b, c, mode);
n = transform_node_shift(n);
+ if (is_Shrs(n))
+ n = transform_node_shift_modulo(n, new_rd_Shrs);
if (is_Shrs(n))
n = transform_node_bitop_shift(n);
/**
* Transform a Shl.
*/
-static ir_node *transform_node_Shl(ir_node *n) {
+static ir_node *transform_node_Shl(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Shl_left(n);
ir_node *b = get_Shl_right(n);
ir_mode *mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_shl, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_shl, a, b, c, mode);
n = transform_node_shift(n);
+ if (is_Shl(n))
+ n = transform_node_shift_modulo(n, new_rd_Shl);
if (is_Shl(n))
n = transform_node_shl_shr(n);
if (is_Shl(n))
/**
* Transform a Rotl.
*/
-static ir_node *transform_node_Rotl(ir_node *n) {
+static ir_node *transform_node_Rotl(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_node *a = get_Rotl_left(n);
ir_node *b = get_Rotl_right(n);
ir_mode *mode = get_irn_mode(n);
- HANDLE_BINOP_PHI(tarval_rotl, a, b, c, mode);
+ HANDLE_BINOP_PHI((eval_func) tarval_rotl, a, b, c, mode);
n = transform_node_shift(n);
if (is_Rotl(n))
/**
* Transform a Conv.
*/
-static ir_node *transform_node_Conv(ir_node *n) {
+static ir_node *transform_node_Conv(ir_node *n)
+{
ir_node *c, *oldn = n;
ir_mode *mode = get_irn_mode(n);
ir_node *a = get_Conv_op(n);
}
if (is_Unknown(a)) { /* Conv_A(Unknown_B) -> Unknown_A */
- return new_r_Unknown(current_ir_graph, mode);
+ ir_graph *irg = get_irn_irg(n);
+ return new_r_Unknown(irg, mode);
}
if (mode_is_reference(mode) &&
ir_node *r = get_Add_right(a);
dbg_info *dbgi = get_irn_dbg_info(a);
ir_node *block = get_nodes_block(n);
- if(is_Conv(l)) {
+ if (is_Conv(l)) {
ir_node *lop = get_Conv_op(l);
- if(get_irn_mode(lop) == mode) {
+ if (get_irn_mode(lop) == mode) {
/* ConvP(AddI(ConvI(P), x)) -> AddP(P, x) */
- n = new_rd_Add(dbgi, current_ir_graph, block, lop, r, mode);
+ n = new_rd_Add(dbgi, block, lop, r, mode);
return n;
}
}
- if(is_Conv(r)) {
+ if (is_Conv(r)) {
ir_node *rop = get_Conv_op(r);
- if(get_irn_mode(rop) == mode) {
+ if (get_irn_mode(rop) == mode) {
/* ConvP(AddI(x, ConvI(P))) -> AddP(x, P) */
- n = new_rd_Add(dbgi, current_ir_graph, block, l, rop, mode);
+ n = new_rd_Add(dbgi, block, l, rop, mode);
return n;
}
}
* Remove dead blocks and nodes in dead blocks
* in keep alive list. We do not generate a new End node.
*/
-static ir_node *transform_node_End(ir_node *n) {
+static ir_node *transform_node_End(ir_node *n)
+{
int i, j, n_keepalives = get_End_n_keepalives(n);
ir_node **in;
return n;
} /* transform_node_End */
-/** returns 1 if a == -b */
-static int is_negated_value(ir_node *a, ir_node *b) {
+int ir_is_negated_value(const ir_node *a, const ir_node *b)
+{
if (is_Minus(a) && get_Minus_op(a) == b)
- return 1;
+ return true;
if (is_Minus(b) && get_Minus_op(b) == a)
- return 1;
+ return true;
if (is_Sub(a) && is_Sub(b)) {
ir_node *a_left = get_Sub_left(a);
ir_node *a_right = get_Sub_right(a);
ir_node *b_right = get_Sub_right(b);
if (a_left == b_right && a_right == b_left)
- return 1;
+ return true;
}
- return 0;
+ return false;
}
/**
* Optimize a Mux into some simpler cases.
*/
-static ir_node *transform_node_Mux(ir_node *n) {
+static ir_node *transform_node_Mux(ir_node *n)
+{
ir_node *oldn = n, *sel = get_Mux_sel(n);
ir_mode *mode = get_irn_mode(n);
ir_node *t = get_Mux_true(n);
ir_node *f = get_Mux_false(n);
- ir_graph *irg = current_ir_graph;
-
- /* first normalization step: move a possible zero to the false case */
- if (is_Proj(sel)) {
- ir_node *cmp = get_Proj_pred(sel);
-
- if (is_Cmp(cmp)) {
- if (is_Const(t) && is_Const_null(t)) {
- ir_node *tmp;
-
- /* Mux(x, 0, y) => Mux(x, y, 0) */
- pn_Cmp pnc = get_Proj_proj(sel);
- sel = new_r_Proj(irg, get_nodes_block(cmp), cmp, mode_b,
- get_negated_pnc(pnc, get_irn_mode(get_Cmp_left(cmp))));
- n = new_rd_Mux(get_irn_dbg_info(n), irg, get_nodes_block(n), sel, t, f, mode);
- tmp = t;
- t = f;
- f = tmp;
- }
- }
+ ir_graph *irg = get_irn_irg(n);
+
+ if (is_irg_state(irg, IR_GRAPH_STATE_KEEP_MUX))
+ return n;
+
+ if (is_Mux(t)) {
+ ir_node* block = get_nodes_block(n);
+ ir_node* c0 = sel;
+ ir_node* c1 = get_Mux_sel(t);
+ ir_node* t1 = get_Mux_true(t);
+ ir_node* f1 = get_Mux_false(t);
+ if (f == f1) {
+ /* Mux(cond0, Mux(cond1, x, y), y) -> typical if (cond0 && cond1) x else y */
+ ir_node* and_ = new_r_And(block, c0, c1, mode_b);
+ ir_node* new_mux = new_r_Mux(block, and_, f1, t1, mode);
+ n = new_mux;
+ sel = and_;
+ f = f1;
+ t = t1;
+ DBG_OPT_ALGSIM0(oldn, t, FS_OPT_MUX_COMBINE);
+ } else if (f == t1) {
+ /* Mux(cond0, Mux(cond1, x, y), x) */
+ ir_node* not_c1 = new_r_Not(block, c1, mode_b);
+ ir_node* and_ = new_r_And(block, c0, not_c1, mode_b);
+ ir_node* new_mux = new_r_Mux(block, and_, t1, f1, mode);
+ n = new_mux;
+ sel = and_;
+ f = t1;
+ t = f1;
+ DBG_OPT_ALGSIM0(oldn, t, FS_OPT_MUX_COMBINE);
+ }
+ } else if (is_Mux(f)) {
+ ir_node* block = get_nodes_block(n);
+ ir_node* c0 = sel;
+ ir_node* c1 = get_Mux_sel(f);
+ ir_node* t1 = get_Mux_true(f);
+ ir_node* f1 = get_Mux_false(f);
+ if (t == t1) {
+ /* Mux(cond0, x, Mux(cond1, x, y)) -> typical if (cond0 || cond1) x else y */
+ ir_node* or_ = new_r_Or(block, c0, c1, mode_b);
+ ir_node* new_mux = new_r_Mux(block, or_, f1, t1, mode);
+ n = new_mux;
+ sel = or_;
+ f = f1;
+ t = t1;
+ DBG_OPT_ALGSIM0(oldn, f, FS_OPT_MUX_COMBINE);
+ } else if (t == f1) {
+ /* Mux(cond0, x, Mux(cond1, y, x)) */
+ ir_node* not_c1 = new_r_Not(block, c1, mode_b);
+ ir_node* or_ = new_r_Or(block, c0, not_c1, mode_b);
+ ir_node* new_mux = new_r_Mux(block, or_, t1, f1, mode);
+ n = new_mux;
+ sel = or_;
+ f = t1;
+ t = f1;
+ DBG_OPT_ALGSIM0(oldn, f, FS_OPT_MUX_COMBINE);
+ }
+ }
+
+ /* first normalization step: try to move a constant to the false side,
+ * 0 preferred on false side too */
+ if (is_Cmp(sel) && is_Const(t) &&
+ (!is_Const(f) || (is_Const_null(t) && !is_Const_null(f)))) {
+ dbg_info *seldbgi = get_irn_dbg_info(sel);
+ ir_node *block = get_nodes_block(sel);
+ ir_relation relation = get_Cmp_relation(sel);
+ ir_node *tmp = t;
+ t = f;
+ f = tmp;
+
+ /* Mux(x, a, b) => Mux(not(x), b, a) */
+ relation = get_negated_relation(relation);
+ sel = new_rd_Cmp(seldbgi, block, get_Cmp_left(sel),
+ get_Cmp_right(sel), relation);
+ n = new_rd_Mux(get_irn_dbg_info(n), get_nodes_block(n), sel, f, t, mode);
}
/* note: after normalization, false can only happen on default */
if (mode == mode_b) {
dbg_info *dbg = get_irn_dbg_info(n);
ir_node *block = get_nodes_block(n);
- ir_graph *irg = current_ir_graph;
if (is_Const(t)) {
- tarval *tv_t = get_Const_tarval(t);
+ ir_tarval *tv_t = get_Const_tarval(t);
if (tv_t == tarval_b_true) {
if (is_Const(f)) {
/* Muxb(sel, true, false) = sel */
return sel;
} else {
/* Muxb(sel, true, x) = Or(sel, x) */
- n = new_rd_Or(dbg, irg, block, sel, f, mode_b);
+ n = new_rd_Or(dbg, block, sel, f, mode_b);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_OR_BOOL);
return n;
}
}
} else if (is_Const(f)) {
- tarval *tv_f = get_Const_tarval(f);
+ ir_tarval *tv_f = get_Const_tarval(f);
if (tv_f == tarval_b_true) {
/* Muxb(sel, x, true) = Or(Not(sel), x) */
- ir_node* not_sel = new_rd_Not(dbg, irg, block, sel, mode_b);
+ ir_node* not_sel = new_rd_Not(dbg, block, sel, mode_b);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_ORNOT_BOOL);
- n = new_rd_Or(dbg, irg, block, not_sel, t, mode_b);
+ n = new_rd_Or(dbg, block, not_sel, t, mode_b);
return n;
} else {
/* Muxb(sel, x, false) = And(sel, x) */
assert(tv_f == tarval_b_false);
- n = new_rd_And(dbg, irg, block, sel, t, mode_b);
+ n = new_rd_And(dbg, block, sel, t, mode_b);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_AND_BOOL);
return n;
}
}
}
- /* more normalization: try to normalize Mux(x, C1, C2) into Mux(x, +1/-1, 0) op C2 */
+ /* more normalization: Mux(sel, 0, 1) is simply a conv from the mode_b
+ * value to integer. */
if (is_Const(t) && is_Const(f) && mode_is_int(mode)) {
- tarval *a = get_Const_tarval(t);
- tarval *b = get_Const_tarval(f);
- tarval *null = get_tarval_null(mode);
- tarval *diff, *min;
-
- if (tarval_cmp(a, b) & pn_Cmp_Gt) {
- diff = tarval_sub(a, b, NULL);
- min = b;
- } else {
- diff = tarval_sub(b, a, NULL);
- min = a;
- }
+ ir_tarval *a = get_Const_tarval(t);
+ ir_tarval *b = get_Const_tarval(f);
- if (diff == get_tarval_one(mode) && min != null) {
- dbg_info *dbg = get_irn_dbg_info(n);
- ir_node *block = get_nodes_block(n);
- ir_graph *irg = current_ir_graph;
- ir_node *t = new_Const(tarval_sub(a, min, NULL));
- ir_node *f = new_Const(tarval_sub(b, min, NULL));
- n = new_rd_Mux(dbg, irg, block, sel, f, t, mode);
- n = new_rd_Add(dbg, irg, block, n, new_Const(min), mode);
+ if (tarval_is_one(a) && tarval_is_null(b)) {
+ ir_node *block = get_nodes_block(n);
+ ir_node *conv = new_r_Conv(block, sel, mode);
+ n = conv;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_CONV);
+ return n;
+ } else if (tarval_is_null(a) && tarval_is_one(b)) {
+ ir_node *block = get_nodes_block(n);
+ ir_node *not_ = new_r_Not(block, sel, mode_b);
+ ir_node *conv = new_r_Conv(block, not_, mode);
+ n = conv;
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_MUX_CONV);
return n;
}
}
- if (is_Proj(sel)) {
- ir_node *cmp = get_Proj_pred(sel);
- long pn = get_Proj_proj(sel);
+ if (is_Cmp(sel)) {
+ ir_node *cmp_r = get_Cmp_right(sel);
+ if (is_Const(cmp_r) && is_Const_null(cmp_r)) {
+ ir_node *block = get_nodes_block(n);
+ ir_node *cmp_l = get_Cmp_left(sel);
- /*
- * Note: normalization puts the constant on the right side,
- * so we check only one case.
- *
- * Note further that these optimization work even for floating point
- * with NaN's because -NaN == NaN.
- * However, if +0 and -0 is handled differently, we cannot use the Abs/-Abs
- * transformations.
- */
- if (is_Cmp(cmp)) {
- ir_node *cmp_r = get_Cmp_right(cmp);
- if (is_Const(cmp_r) && is_Const_null(cmp_r)) {
- ir_node *block = get_nodes_block(n);
- ir_node *cmp_l = get_Cmp_left(cmp);
-
- if (!mode_honor_signed_zeros(mode) && is_negated_value(f, t)) {
- /* f = -t */
-
- if ( (cmp_l == t && (pn == pn_Cmp_Ge || pn == pn_Cmp_Gt))
- || (cmp_l == f && (pn == pn_Cmp_Le || pn == pn_Cmp_Lt)))
- {
- /* Mux(a >/>= 0, a, -a) = Mux(a </<= 0, -a, a) ==> Abs(a) */
- n = new_rd_Abs(get_irn_dbg_info(n), current_ir_graph, block,
- cmp_l, mode);
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_ABS);
- return n;
- } else if ((cmp_l == t && (pn == pn_Cmp_Le || pn == pn_Cmp_Lt))
- || (cmp_l == f && (pn == pn_Cmp_Ge || pn == pn_Cmp_Gt)))
- {
- /* Mux(a </<= 0, a, -a) = Mux(a >/>= 0, -a, a) ==> -Abs(a) */
- n = new_rd_Abs(get_irn_dbg_info(n), current_ir_graph, block,
- cmp_l, mode);
- n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph,
- block, n, mode);
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_ABS);
- return n;
+ if (mode_is_int(mode)) {
+ ir_relation relation = get_Cmp_relation(sel);
+ /* integer only */
+ if ((relation == ir_relation_less_greater || relation == ir_relation_equal) && is_And(cmp_l)) {
+ /* Mux((a & b) != 0, c, 0) */
+ ir_node *and_r = get_And_right(cmp_l);
+ ir_node *and_l;
+
+ if (and_r == t && f == cmp_r) {
+ if (is_Const(t) && tarval_is_single_bit(get_Const_tarval(t))) {
+ if (relation == ir_relation_less_greater) {
+ /* Mux((a & 2^C) != 0, 2^C, 0) */
+ n = cmp_l;
+ DBG_OPT_ALGSIM1(oldn, sel, sel, n, FS_OPT_MUX_TO_BITOP);
+ } else {
+ /* Mux((a & 2^C) == 0, 2^C, 0) */
+ n = new_rd_Eor(get_irn_dbg_info(n),
+ block, cmp_l, t, mode);
+ DBG_OPT_ALGSIM1(oldn, sel, sel, n, FS_OPT_MUX_TO_BITOP);
+ }
+ return n;
+ }
}
- }
-
- if (mode_is_int(mode)) {
- /* integer only */
- if ((pn == pn_Cmp_Lg || pn == pn_Cmp_Eq) && is_And(cmp_l)) {
- /* Mux((a & b) != 0, c, 0) */
- ir_node *and_r = get_And_right(cmp_l);
- ir_node *and_l;
-
- if (and_r == t && f == cmp_r) {
- if (is_Const(t) && tarval_is_single_bit(get_Const_tarval(t))) {
- if (pn == pn_Cmp_Lg) {
- /* Mux((a & 2^C) != 0, 2^C, 0) */
+ if (is_Shl(and_r)) {
+ ir_node *shl_l = get_Shl_left(and_r);
+ if (is_Const(shl_l) && is_Const_one(shl_l)) {
+ if (and_r == t && f == cmp_r) {
+ if (relation == ir_relation_less_greater) {
+ /* (a & (1 << n)) != 0, (1 << n), 0) */
n = cmp_l;
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_BITOP);
+ DBG_OPT_ALGSIM1(oldn, sel, sel, n, FS_OPT_MUX_TO_BITOP);
} else {
- /* Mux((a & 2^C) == 0, 2^C, 0) */
- n = new_rd_Eor(get_irn_dbg_info(n), current_ir_graph,
+ /* (a & (1 << n)) == 0, (1 << n), 0) */
+ n = new_rd_Eor(get_irn_dbg_info(n),
block, cmp_l, t, mode);
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_BITOP);
+ DBG_OPT_ALGSIM1(oldn, sel, sel, n, FS_OPT_MUX_TO_BITOP);
}
return n;
}
}
- if (is_Shl(and_r)) {
- ir_node *shl_l = get_Shl_left(and_r);
- if (is_Const(shl_l) && is_Const_one(shl_l)) {
- if (and_r == t && f == cmp_r) {
- if (pn == pn_Cmp_Lg) {
- /* (a & (1 << n)) != 0, (1 << n), 0) */
- n = cmp_l;
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_BITOP);
- } else {
- /* (a & (1 << n)) == 0, (1 << n), 0) */
- n = new_rd_Eor(get_irn_dbg_info(n), current_ir_graph,
- block, cmp_l, t, mode);
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_BITOP);
- }
- return n;
- }
- }
- }
- and_l = get_And_left(cmp_l);
- if (is_Shl(and_l)) {
- ir_node *shl_l = get_Shl_left(and_l);
- if (is_Const(shl_l) && is_Const_one(shl_l)) {
- if (and_l == t && f == cmp_r) {
- if (pn == pn_Cmp_Lg) {
- /* ((1 << n) & a) != 0, (1 << n), 0) */
- n = cmp_l;
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_BITOP);
- } else {
- /* ((1 << n) & a) == 0, (1 << n), 0) */
- n = new_rd_Eor(get_irn_dbg_info(n), current_ir_graph,
- block, cmp_l, t, mode);
- DBG_OPT_ALGSIM1(oldn, cmp, sel, n, FS_OPT_MUX_TO_BITOP);
- }
- return n;
+ }
+ and_l = get_And_left(cmp_l);
+ if (is_Shl(and_l)) {
+ ir_node *shl_l = get_Shl_left(and_l);
+ if (is_Const(shl_l) && is_Const_one(shl_l)) {
+ if (and_l == t && f == cmp_r) {
+ if (relation == ir_relation_less_greater) {
+ /* ((1 << n) & a) != 0, (1 << n), 0) */
+ n = cmp_l;
+ DBG_OPT_ALGSIM1(oldn, sel, sel, n, FS_OPT_MUX_TO_BITOP);
+ } else {
+ /* ((1 << n) & a) == 0, (1 << n), 0) */
+ n = new_rd_Eor(get_irn_dbg_info(n),
+ block, cmp_l, t, mode);
+ DBG_OPT_ALGSIM1(oldn, sel, sel, n, FS_OPT_MUX_TO_BITOP);
}
+ return n;
}
}
}
}
return n;
-} /* transform_node_Mux */
+}
/**
* optimize Sync nodes that have other syncs as input we simply add the inputs
* of the other sync to our own inputs
*/
-static ir_node *transform_node_Sync(ir_node *n) {
+static ir_node *transform_node_Sync(ir_node *n)
+{
int arity = get_Sync_n_preds(n);
int i;
}
/* rehash the sync node */
- add_identities(current_ir_graph->value_table, n);
+ add_identities(n);
return n;
} /* transform_node_Sync */
/**
* optimize a trampoline Call into a direct Call
*/
-static ir_node *transform_node_Call(ir_node *call) {
+static ir_node *transform_node_Call(ir_node *call)
+{
ir_node *callee = get_Call_ptr(call);
ir_node *adr, *mem, *res, *bl, **in;
ir_type *ctp, *mtp, *tp;
- ident *id;
+ ir_graph *irg;
+ type_dbg_info *tdb;
dbg_info *db;
int i, n_res, n_param;
ir_variadicity var;
/* build a new call type */
mtp = get_Call_type(call);
- id = get_type_ident(mtp);
- id = id_mangle(new_id_from_chars("T_", 2), id);
- db = get_type_dbg_info(mtp);
+ tdb = get_type_dbg_info(mtp);
n_res = get_method_n_ress(mtp);
n_param = get_method_n_params(mtp);
- ctp = new_d_type_method(id, n_param + 1, n_res, db);
+ ctp = new_d_type_method(n_param + 1, n_res, tdb);
for (i = 0; i < n_res; ++i)
set_method_res_type(ctp, i, get_method_res_type(mtp, i));
NEW_ARR_A(ir_node *, in, n_param + 1);
/* FIXME: we don't need a new pointer type in every step */
- tp = get_irg_frame_type(current_ir_graph);
- id = id_mangle(get_type_ident(tp), new_id_from_chars("_ptr", 4));
- tp = new_type_pointer(id, tp, mode_P_data);
+ irg = get_irn_irg(call);
+ tp = get_irg_frame_type(irg);
+ tp = new_type_pointer(tp);
set_method_param_type(ctp, 0, tp);
in[0] = get_Builtin_param(callee, 2);
db = get_irn_dbg_info(call);
bl = get_nodes_block(call);
- res = new_rd_Call(db, current_ir_graph, bl, mem, adr, n_param + 1, in, ctp);
+ res = new_rd_Call(db, bl, mem, adr, n_param + 1, in, ctp);
if (get_irn_pinned(call) == op_pin_state_floats)
set_irn_pinned(res, op_pin_state_floats);
return res;
* transformations _do_ generate new nodes, and thus the old node must
* not be freed even if the equivalent node isn't the old one.
*/
-static ir_node *transform_node(ir_node *n) {
+static ir_node *transform_node(ir_node *n)
+{
ir_node *oldn;
/*
*/
do {
oldn = n;
- if (n->op->ops.transform_node)
+ if (n->op->ops.transform_node != NULL)
n = n->op->ops.transform_node(n);
} while (oldn != n);
switch (code) {
CASE(Add);
- CASE(Sub);
- CASE(Mul);
- CASE_PROJ_EX(Div);
- CASE_PROJ_EX(Mod);
- CASE_PROJ_EX(DivMod);
- CASE(Quot);
- CASE(Abs);
- CASE_PROJ_EX(Cmp);
- CASE_PROJ_EX(Cond);
CASE(And);
+ CASE(Call);
+ CASE(Cmp);
+ CASE(Conv);
+ CASE(End);
CASE(Eor);
- CASE(Not);
CASE(Minus);
- CASE(Cast);
- CASE_PROJ(Load);
- CASE_PROJ(Store);
- CASE_PROJ(Bound);
- CASE_PROJ(CopyB);
- CASE(Proj);
- CASE(Phi);
+ CASE(Mul);
+ CASE(Mux);
+ CASE(Not);
CASE(Or);
+ CASE(Phi);
+ CASE(Proj);
+ CASE(Rotl);
CASE(Sel);
+ CASE(Shl);
CASE(Shr);
CASE(Shrs);
- CASE(Shl);
- CASE(Rotl);
- CASE(Conv);
- CASE(End);
- CASE(Mux);
+ CASE(Sub);
CASE(Sync);
- CASE(Call);
+ CASE_PROJ(Bound);
+ CASE_PROJ(CopyB);
+ CASE_PROJ(Load);
+ CASE_PROJ(Store);
+ CASE_PROJ_EX(Cond);
+ CASE_PROJ_EX(Div);
+ CASE_PROJ_EX(Mod);
default:
/* leave NULL */;
}
#define N_IR_NODES 512
/** Compares the attributes of two Const nodes. */
-static int node_cmp_attr_Const(ir_node *a, ir_node *b) {
- return (get_Const_tarval(a) != get_Const_tarval(b))
- || (get_Const_type(a) != get_Const_type(b));
-} /* node_cmp_attr_Const */
+static int node_cmp_attr_Const(const ir_node *a, const ir_node *b)
+{
+ return get_Const_tarval(a) != get_Const_tarval(b);
+}
/** Compares the attributes of two Proj nodes. */
-static int node_cmp_attr_Proj(ir_node *a, ir_node *b) {
- return get_irn_proj_attr(a) != get_irn_proj_attr(b);
-} /* node_cmp_attr_Proj */
-
-/** Compares the attributes of two Filter nodes. */
-static int node_cmp_attr_Filter(ir_node *a, ir_node *b) {
- return get_Filter_proj(a) != get_Filter_proj(b);
-} /* node_cmp_attr_Filter */
+static int node_cmp_attr_Proj(const ir_node *a, const ir_node *b)
+{
+ return a->attr.proj.proj != b->attr.proj.proj;
+}
/** Compares the attributes of two Alloc nodes. */
-static int node_cmp_attr_Alloc(ir_node *a, ir_node *b) {
- const alloc_attr *pa = get_irn_alloc_attr(a);
- const alloc_attr *pb = get_irn_alloc_attr(b);
+static int node_cmp_attr_Alloc(const ir_node *a, const ir_node *b)
+{
+ const alloc_attr *pa = &a->attr.alloc;
+ const alloc_attr *pb = &b->attr.alloc;
return (pa->where != pb->where) || (pa->type != pb->type);
-} /* node_cmp_attr_Alloc */
+}
/** Compares the attributes of two Free nodes. */
-static int node_cmp_attr_Free(ir_node *a, ir_node *b) {
- const free_attr *pa = get_irn_free_attr(a);
- const free_attr *pb = get_irn_free_attr(b);
+static int node_cmp_attr_Free(const ir_node *a, const ir_node *b)
+{
+ const free_attr *pa = &a->attr.free;
+ const free_attr *pb = &b->attr.free;
return (pa->where != pb->where) || (pa->type != pb->type);
-} /* node_cmp_attr_Free */
+}
/** Compares the attributes of two SymConst nodes. */
-static int node_cmp_attr_SymConst(ir_node *a, ir_node *b) {
- const symconst_attr *pa = get_irn_symconst_attr(a);
- const symconst_attr *pb = get_irn_symconst_attr(b);
+static int node_cmp_attr_SymConst(const ir_node *a, const ir_node *b)
+{
+ const symconst_attr *pa = &a->attr.symc;
+ const symconst_attr *pb = &b->attr.symc;
return (pa->kind != pb->kind)
- || (pa->sym.type_p != pb->sym.type_p)
- || (pa->tp != pb->tp);
-} /* node_cmp_attr_SymConst */
+ || (pa->sym.type_p != pb->sym.type_p);
+}
/** Compares the attributes of two Call nodes. */
-static int node_cmp_attr_Call(ir_node *a, ir_node *b) {
- return get_irn_call_attr(a) != get_irn_call_attr(b);
-} /* node_cmp_attr_Call */
+static int node_cmp_attr_Call(const ir_node *a, const ir_node *b)
+{
+ const call_attr *pa = &a->attr.call;
+ const call_attr *pb = &b->attr.call;
+ return (pa->type != pb->type)
+ || (pa->tail_call != pb->tail_call);
+}
/** Compares the attributes of two Sel nodes. */
-static int node_cmp_attr_Sel(ir_node *a, ir_node *b) {
+static int node_cmp_attr_Sel(const ir_node *a, const ir_node *b)
+{
const ir_entity *a_ent = get_Sel_entity(a);
const ir_entity *b_ent = get_Sel_entity(b);
-#if 0
- return
- (a_ent->kind != b_ent->kind) ||
- (a_ent->name != b_ent->name) ||
- (a_ent->owner != b_ent->owner) ||
- (a_ent->ld_name != b_ent->ld_name) ||
- (a_ent->type != b_ent->type);
-#endif
- /* Matze: inlining of functions can produce 2 entities with same type,
- * name, etc. */
return a_ent != b_ent;
-} /* node_cmp_attr_Sel */
+}
/** Compares the attributes of two Phi nodes. */
-static int node_cmp_attr_Phi(ir_node *a, ir_node *b) {
+static int node_cmp_attr_Phi(const ir_node *a, const ir_node *b)
+{
/* we can only enter this function if both nodes have the same number of inputs,
hence it is enough to check if one of them is a Phi0 */
if (is_Phi0(a)) {
/* check the Phi0 pos attribute */
- return get_irn_phi_attr(a)->u.pos != get_irn_phi_attr(b)->u.pos;
+ return a->attr.phi.u.pos != b->attr.phi.u.pos;
}
return 0;
-} /* node_cmp_attr_Phi */
+}
/** Compares the attributes of two Conv nodes. */
-static int node_cmp_attr_Conv(ir_node *a, ir_node *b) {
+static int node_cmp_attr_Conv(const ir_node *a, const ir_node *b)
+{
return get_Conv_strict(a) != get_Conv_strict(b);
-} /* node_cmp_attr_Conv */
+}
/** Compares the attributes of two Cast nodes. */
-static int node_cmp_attr_Cast(ir_node *a, ir_node *b) {
+static int node_cmp_attr_Cast(const ir_node *a, const ir_node *b)
+{
return get_Cast_type(a) != get_Cast_type(b);
-} /* node_cmp_attr_Cast */
+}
/** Compares the attributes of two Load nodes. */
-static int node_cmp_attr_Load(ir_node *a, ir_node *b) {
+static int node_cmp_attr_Load(const ir_node *a, const ir_node *b)
+{
if (get_Load_volatility(a) == volatility_is_volatile ||
get_Load_volatility(b) == volatility_is_volatile)
/* NEVER do CSE on volatile Loads */
return 1;
return get_Load_mode(a) != get_Load_mode(b);
-} /* node_cmp_attr_Load */
+}
/** Compares the attributes of two Store nodes. */
-static int node_cmp_attr_Store(ir_node *a, ir_node *b) {
+static int node_cmp_attr_Store(const ir_node *a, const ir_node *b)
+{
/* do not CSE Stores with different alignment. Be conservative. */
if (get_Store_align(a) != get_Store_align(b))
return 1;
/* NEVER do CSE on volatile Stores */
return (get_Store_volatility(a) == volatility_is_volatile ||
get_Store_volatility(b) == volatility_is_volatile);
-} /* node_cmp_attr_Store */
+}
/** Compares two exception attributes */
-static int node_cmp_exception(ir_node *a, ir_node *b) {
- const except_attr *ea = get_irn_except_attr(a);
- const except_attr *eb = get_irn_except_attr(b);
+static int node_cmp_exception(const ir_node *a, const ir_node *b)
+{
+ const except_attr *ea = &a->attr.except;
+ const except_attr *eb = &b->attr.except;
return ea->pin_state != eb->pin_state;
}
#define node_cmp_attr_Bound node_cmp_exception
/** Compares the attributes of two Div nodes. */
-static int node_cmp_attr_Div(ir_node *a, ir_node *b) {
- const divmod_attr *ma = get_irn_divmod_attr(a);
- const divmod_attr *mb = get_irn_divmod_attr(b);
+static int node_cmp_attr_Div(const ir_node *a, const ir_node *b)
+{
+ const div_attr *ma = &a->attr.div;
+ const div_attr *mb = &b->attr.div;
return ma->exc.pin_state != mb->exc.pin_state ||
- ma->res_mode != mb->res_mode ||
+ ma->resmode != mb->resmode ||
ma->no_remainder != mb->no_remainder;
-} /* node_cmp_attr_Div */
-
-/** Compares the attributes of two DivMod nodes. */
-static int node_cmp_attr_DivMod(ir_node *a, ir_node *b) {
- const divmod_attr *ma = get_irn_divmod_attr(a);
- const divmod_attr *mb = get_irn_divmod_attr(b);
- return ma->exc.pin_state != mb->exc.pin_state ||
- ma->res_mode != mb->res_mode;
-} /* node_cmp_attr_DivMod */
+}
/** Compares the attributes of two Mod nodes. */
-static int node_cmp_attr_Mod(ir_node *a, ir_node *b) {
- const divmod_attr *ma = get_irn_divmod_attr(a);
- const divmod_attr *mb = get_irn_divmod_attr(b);
+static int node_cmp_attr_Mod(const ir_node *a, const ir_node *b)
+{
+ const mod_attr *ma = &a->attr.mod;
+ const mod_attr *mb = &b->attr.mod;
return ma->exc.pin_state != mb->exc.pin_state ||
- ma->res_mode != mb->res_mode;
-} /* node_cmp_attr_Mod */
+ ma->resmode != mb->resmode;
+}
-/** Compares the attributes of two Quot nodes. */
-static int node_cmp_attr_Quot(ir_node *a, ir_node *b) {
- const divmod_attr *ma = get_irn_divmod_attr(a);
- const divmod_attr *mb = get_irn_divmod_attr(b);
- return ma->exc.pin_state != mb->exc.pin_state ||
- ma->res_mode != mb->res_mode;
-} /* node_cmp_attr_Quot */
+static int node_cmp_attr_Cmp(const ir_node *a, const ir_node *b)
+{
+ const cmp_attr *ma = &a->attr.cmp;
+ const cmp_attr *mb = &b->attr.cmp;
+ return ma->relation != mb->relation;
+}
/** Compares the attributes of two Confirm nodes. */
-static int node_cmp_attr_Confirm(ir_node *a, ir_node *b) {
- /* no need to compare the bound, as this is a input */
- return (get_Confirm_cmp(a) != get_Confirm_cmp(b));
-} /* node_cmp_attr_Confirm */
+static int node_cmp_attr_Confirm(const ir_node *a, const ir_node *b)
+{
+ const confirm_attr *ma = &a->attr.confirm;
+ const confirm_attr *mb = &b->attr.confirm;
+ return ma->relation != mb->relation;
+}
/** Compares the attributes of two Builtin nodes. */
-static int node_cmp_attr_Builtin(ir_node *a, ir_node *b) {
- const builtin_attr *ma = get_irn_builtin_attr(a);
- const builtin_attr *mb = get_irn_builtin_attr(b);
-
+static int node_cmp_attr_Builtin(const ir_node *a, const ir_node *b)
+{
/* no need to compare the type, equal kind means equal type */
- return ma->kind != mb->kind;
-} /* node_cmp_attr_Builtin */
+ return get_Builtin_kind(a) != get_Builtin_kind(b);
+}
/** Compares the attributes of two ASM nodes. */
-static int node_cmp_attr_ASM(ir_node *a, ir_node *b) {
+static int node_cmp_attr_ASM(const ir_node *a, const ir_node *b)
+{
int i, n;
const ir_asm_constraint *ca;
const ir_asm_constraint *cb;
return 1;
}
return 0;
-} /* node_cmp_attr_ASM */
+}
/** Compares the inexistent attributes of two Dummy nodes. */
-static int node_cmp_attr_Dummy(ir_node *a, ir_node *b)
+static int node_cmp_attr_Dummy(const ir_node *a, const ir_node *b)
{
(void) a;
(void) b;
switch (code) {
CASE(Const);
CASE(Proj);
- CASE(Filter);
CASE(Alloc);
CASE(Free);
CASE(SymConst);
CASE(Call);
CASE(Sel);
CASE(Phi);
+ CASE(Cmp);
CASE(Conv);
CASE(Cast);
CASE(Load);
CASE(Confirm);
CASE(ASM);
CASE(Div);
- CASE(DivMod);
CASE(Mod);
- CASE(Quot);
CASE(Bound);
CASE(Builtin);
CASE(Dummy);
/* FIXME CopyB */
default:
- /* leave NULL */;
+ /* leave NULL */
+ break;
}
return ops;
* Compare function for two nodes in the value table. Gets two
* nodes as parameters. Returns 0 if the nodes are a Common Sub Expression.
*/
-int identities_cmp(const void *elt, const void *key) {
+int identities_cmp(const void *elt, const void *key)
+{
ir_node *a = (ir_node *)elt;
ir_node *b = (ir_node *)key;
int i, irn_arity_a;
(get_irn_mode(a) != get_irn_mode(b))) return 1;
/* compare if a's in and b's in are of equal length */
- irn_arity_a = get_irn_intra_arity(a);
- if (irn_arity_a != get_irn_intra_arity(b))
+ irn_arity_a = get_irn_arity(a);
+ if (irn_arity_a != get_irn_arity(b))
+ return 1;
+
+ /* blocks are never the same */
+ if (is_Block(a))
return 1;
if (get_irn_pinned(a) == op_pin_state_pinned) {
/* for pinned nodes, the block inputs must be equal */
- if (get_irn_intra_n(a, -1) != get_irn_intra_n(b, -1))
+ if (get_irn_n(a, -1) != get_irn_n(b, -1))
return 1;
} else if (! get_opt_global_cse()) {
- /* for block-local CSE both nodes must be in the same MacroBlock */
- if (get_irn_MacroBlock(a) != get_irn_MacroBlock(b))
+ /* for block-local CSE both nodes must be in the same Block */
+ if (get_nodes_block(a) != get_nodes_block(b))
return 1;
}
/* compare a->in[0..ins] with b->in[0..ins] */
- for (i = 0; i < irn_arity_a; i++)
- if (get_irn_intra_n(a, i) != get_irn_intra_n(b, i))
- return 1;
+ for (i = 0; i < irn_arity_a; ++i) {
+ ir_node *pred_a = get_irn_n(a, i);
+ ir_node *pred_b = get_irn_n(b, i);
+ if (pred_a != pred_b) {
+ /* if both predecessors are CSE neutral they might be different */
+ if (!is_irn_cse_neutral(pred_a) || !is_irn_cse_neutral(pred_b))
+ return 1;
+ }
+ }
/*
* here, we already now that the nodes are identical except their
*
* @param node The IR-node
*/
-unsigned ir_node_hash(const ir_node *node) {
+unsigned ir_node_hash(const ir_node *node)
+{
return node->op->ops.hash(node);
} /* ir_node_hash */
-pset *new_identities(void) {
- return new_pset(identities_cmp, N_IR_NODES);
+void new_identities(ir_graph *irg)
+{
+ if (irg->value_table != NULL)
+ del_pset(irg->value_table);
+ irg->value_table = new_pset(identities_cmp, N_IR_NODES);
} /* new_identities */
-void del_identities(pset *value_table) {
- del_pset(value_table);
+void del_identities(ir_graph *irg)
+{
+ if (irg->value_table != NULL)
+ del_pset(irg->value_table);
} /* del_identities */
/* Normalize a node by putting constants (and operands with larger
* node index) on the right (operator side). */
-void ir_normalize_node(ir_node *n) {
+void ir_normalize_node(ir_node *n)
+{
if (is_op_commutative(get_irn_op(n))) {
ir_node *l = get_binop_left(n);
ir_node *r = get_binop_right(n);
}
} /* ir_normalize_node */
-/**
- * Update the nodes after a match in the value table. If both nodes have
- * the same MacroBlock but different Blocks, we must ensure that the node
- * with the dominating Block (the node that is near to the MacroBlock header
- * is stored in the table.
- * Because a MacroBlock has only one "non-exception" flow, we don't need
- * dominance info here: We known, that one block must dominate the other and
- * following the only block input will allow to find it.
- */
-static void update_known_irn(ir_node *known_irn, const ir_node *new_ir_node) {
- ir_node *known_blk, *new_block, *block, *mbh;
-
- if (get_opt_global_cse()) {
- /* Block inputs are meaning less */
- return;
- }
- known_blk = get_irn_n(known_irn, -1);
- new_block = get_irn_n(new_ir_node, -1);
- if (known_blk == new_block) {
- /* already in the same block */
- return;
- }
- /*
- * We expect the typical case when we built the graph. In that case, the
- * known_irn is already the upper one, so checking this should be faster.
- */
- block = new_block;
- mbh = get_Block_MacroBlock(new_block);
- for (;;) {
- if (block == known_blk) {
- /* ok, we have found it: known_block dominates new_block as expected */
- return;
- }
- if (block == mbh) {
- /*
- * We have reached the MacroBlock header NOT founding
- * the known_block. new_block must dominate known_block.
- * Update known_irn.
- */
- set_irn_n(known_irn, -1, new_block);
- return;
- }
- assert(get_Block_n_cfgpreds(block) == 1);
- block = get_Block_cfgpred_block(block, 0);
- }
-} /* update_value_table */
-
/*
* Return the canonical node computing the same value as n.
* Looks up the node in a hash table, enters it in the table
* if it isn't there yet.
*
- * @param value_table the HashSet containing all nodes in the
- * current IR graph
* @param n the node to look up
*
* @return a node that computes the same value as n or n if no such
* node could be found
*/
-ir_node *identify_remember(pset *value_table, ir_node *n) {
- ir_node *o = NULL;
+ir_node *identify_remember(ir_node *n)
+{
+ ir_graph *irg = get_irn_irg(n);
+ pset *value_table = irg->value_table;
+ ir_node *nn;
- if (!value_table) return n;
+ if (value_table == NULL)
+ return n;
ir_normalize_node(n);
/* lookup or insert in hash table with given hash key. */
- o = pset_insert(value_table, n, ir_node_hash(n));
+ nn = (ir_node*)pset_insert(value_table, n, ir_node_hash(n));
- if (o != n) {
- update_known_irn(o, n);
+ if (nn != n) {
+ /* n is reachable again */
+ edges_node_revival(nn, get_irn_irg(nn));
}
- return o;
+ return nn;
} /* identify_remember */
/**
- * During construction we set the op_pin_state_pinned flag in the graph right when the
- * optimization is performed. The flag turning on procedure global cse could
- * be changed between two allocations. This way we are safe.
+ * During construction we set the op_pin_state_pinned flag in the graph right
+ * when the optimization is performed. The flag turning on procedure global
+ * cse could be changed between two allocations. This way we are safe.
*
- * @param value_table The value table
* @param n The node to lookup
*/
-static inline ir_node *identify_cons(pset *value_table, ir_node *n) {
+static inline ir_node *identify_cons(ir_node *n)
+{
ir_node *old = n;
- n = identify_remember(value_table, n);
- if (n != old && get_irn_MacroBlock(old) != get_irn_MacroBlock(n))
- set_irg_pinned(current_ir_graph, op_pin_state_floats);
+ n = identify_remember(n);
+ if (n != old && get_nodes_block(old) != get_nodes_block(n)) {
+ ir_graph *irg = get_irn_irg(n);
+ set_irg_pinned(irg, op_pin_state_floats);
+ }
return n;
} /* identify_cons */
/* Add a node to the identities value table. */
-void add_identities(pset *value_table, ir_node *node) {
- if (get_opt_cse() && is_no_Block(node))
- identify_remember(value_table, node);
-} /* add_identities */
+void add_identities(ir_node *node)
+{
+ if (!get_opt_cse())
+ return;
+ if (is_Block(node))
+ return;
+
+ identify_remember(node);
+}
/* Visit each node in the value table of a graph. */
-void visit_all_identities(ir_graph *irg, irg_walk_func visit, void *env) {
- ir_node *node;
+void visit_all_identities(ir_graph *irg, irg_walk_func visit, void *env)
+{
+ ir_node *node;
ir_graph *rem = current_ir_graph;
current_ir_graph = irg;
- foreach_pset(irg->value_table, node)
+ foreach_pset(irg->value_table, ir_node*, node) {
visit(node, env);
+ }
current_ir_graph = rem;
} /* visit_all_identities */
* Garbage in, garbage out. If a node has a dead input, i.e., the
* Bad node is input to the node, return the Bad node.
*/
-static ir_node *gigo(ir_node *node) {
+static ir_node *gigo(ir_node *node)
+{
int i, irn_arity;
ir_op *op = get_irn_op(node);
/* remove garbage blocks by looking at control flow that leaves the block
and replacing the control flow by Bad. */
if (get_irn_mode(node) == mode_X) {
- ir_node *block = get_nodes_block(skip_Proj(node));
+ ir_node *block = get_nodes_block(skip_Proj(node));
+ ir_graph *irg = get_irn_irg(block);
/* Don't optimize nodes in immature blocks. */
if (!get_Block_matured(block))
if (is_Block(block)) {
if (is_Block_dead(block)) {
/* control flow from dead block is dead */
- return new_Bad();
+ return get_irg_bad(irg);
}
for (i = get_irn_arity(block) - 1; i >= 0; --i) {
* but can be found by irg_walk()!
*/
set_Block_dead(block);
- return new_Bad();
+ return get_irg_bad(irg);
}
}
}
/* Blocks, Phis and Tuples may have dead inputs, e.g., if one of the
blocks predecessors is dead. */
- if (op != op_Block && op != op_Phi && op != op_Tuple) {
+ if (op != op_Block && op != op_Phi && op != op_Tuple && op != op_Anchor) {
+ ir_graph *irg = get_irn_irg(node);
irn_arity = get_irn_arity(node);
/*
*/
if (is_irn_pinned_in_irg(node) &&
is_Block_dead(get_nodes_block(skip_Proj(node))))
- return new_Bad();
+ return get_irg_bad(irg);
for (i = 0; i < irn_arity; i++) {
ir_node *pred = get_irn_n(node, i);
if (is_Bad(pred))
- return new_Bad();
+ return get_irg_bad(irg);
#if 0
/* Propagating Unknowns here seems to be a bad idea, because
sometimes we need a node as a input and did not want that
However, it might be useful to move this into a later phase
(if you think that optimizing such code is useful). */
if (is_Unknown(pred) && mode_is_data(get_irn_mode(node)))
- return new_Unknown(get_irn_mode(node));
+ return new_r_Unknown(irg, get_irn_mode(node));
#endif
}
}
for (i = 0; i < irn_arity; i++) {
if (!is_Bad(get_irn_n(node, i))) break;
}
- if (i == irn_arity) node = new_Bad();
+ if (i == irn_arity) node = get_irg_bad(irg);
}
#endif
return node;
* reference this one, i.e., right after construction of a node.
*
* @param n The node to optimize
- *
- * current_ir_graph must be set to the graph of the node!
*/
-ir_node *optimize_node(ir_node *n) {
- tarval *tv;
- ir_node *oldn = n;
- ir_opcode iro = get_irn_opcode(n);
+ir_node *optimize_node(ir_node *n)
+{
+ ir_node *oldn = n;
+ ir_graph *irg = get_irn_irg(n);
+ unsigned iro = get_irn_opcode(n);
+ ir_tarval *tv;
/* Always optimize Phi nodes: part of the construction. */
if ((!get_opt_optimize()) && (iro != iro_Phi)) return n;
+ /* Remove nodes with dead (Bad) input.
+ Run always for transformation induced Bads. */
+ n = gigo(n);
+ if (n != oldn) {
+ edges_node_deleted(oldn, irg);
+
+ /* We found an existing, better node, so we can deallocate the old node. */
+ irg_kill_node(irg, oldn);
+ return n;
+ }
+
/* constant expression evaluation / constant folding */
if (get_opt_constant_folding()) {
/* neither constants nor Tuple values can be evaluated */
if (iro != iro_Const && (get_irn_mode(n) != mode_T)) {
- unsigned fp_model = get_irg_fp_model(current_ir_graph);
- int old_fp_mode = tarval_fp_ops_enabled();
-
- tarval_enable_fp_ops(! (fp_model & fp_no_float_fold));
-
/* try to evaluate */
tv = computed_value(n);
if (tv != tarval_bad) {
ir_node *nw;
- ir_type *old_tp = get_irn_type(n);
- int i, arity = get_irn_arity(n);
- int node_size;
-
- /*
- * Try to recover the type of the new expression.
- */
- for (i = 0; i < arity && !old_tp; ++i)
- old_tp = get_irn_type(get_irn_n(n, i));
+ size_t node_size;
/*
- * we MUST copy the node here temporary, because it's still needed
- * for DBG_OPT_CSTEVAL
+ * we MUST copy the node here temporary, because it's still
+ * needed for DBG_OPT_CSTEVAL
*/
node_size = offsetof(ir_node, attr) + n->op->attr_size;
- oldn = alloca(node_size);
+ oldn = (ir_node*)alloca(node_size);
memcpy(oldn, n, node_size);
CLONE_ARR_A(ir_node *, oldn->in, n->in);
memcpy(oldn->in, n->in, ARR_LEN(n->in) * sizeof(n->in[0]));
/* note the inplace edges module */
- edges_node_deleted(n, current_ir_graph);
+ edges_node_deleted(n, irg);
/* evaluation was successful -- replace the node. */
- irg_kill_node(current_ir_graph, n);
- nw = new_Const(tv);
+ irg_kill_node(irg, n);
+ nw = new_r_Const(irg, tv);
- if (old_tp && get_type_mode(old_tp) == get_tarval_mode(tv))
- set_Const_type(nw, old_tp);
DBG_OPT_CSTEVAL(oldn, nw);
- tarval_enable_fp_ops(old_fp_mode);
return nw;
}
- tarval_enable_fp_ops(old_fp_mode);
}
}
* subexpressions within a block.
*/
if (get_opt_cse())
- n = identify_cons(current_ir_graph->value_table, n);
+ n = identify_cons(n);
if (n != oldn) {
- edges_node_deleted(oldn, current_ir_graph);
+ edges_node_deleted(oldn, irg);
/* We found an existing, better node, so we can deallocate the old node. */
- irg_kill_node(current_ir_graph, oldn);
+ irg_kill_node(irg, oldn);
return n;
}
(iro == iro_Proj)) /* Flags tested local. */
n = transform_node(n);
- /* Remove nodes with dead (Bad) input.
- Run always for transformation induced Bads. */
- n = gigo(n);
-
/* Now we have a legal, useful node. Enter it in hash table for CSE */
if (get_opt_cse() && (get_irn_opcode(n) != iro_Block)) {
ir_node *o = n;
- n = identify_remember(current_ir_graph->value_table, o);
+ n = identify_remember(o);
if (o != n)
DBG_OPT_CSE(o, n);
}
* nodes lying on the obstack. Remove these by a dead node elimination,
* i.e., a copying garbage collection.
*/
-ir_node *optimize_in_place_2(ir_node *n) {
- tarval *tv;
- ir_node *oldn = n;
- ir_opcode iro = get_irn_opcode(n);
+ir_node *optimize_in_place_2(ir_node *n)
+{
+ ir_tarval *tv;
+ ir_node *oldn = n;
+ unsigned iro = get_irn_opcode(n);
if (!get_opt_optimize() && !is_Phi(n)) return n;
+ if (iro == iro_Deleted)
+ return n;
+
+ /* Remove nodes with dead (Bad) input.
+ Run always for transformation induced Bads. */
+ n = gigo(n);
+ if (is_Bad(n))
+ return n;
+
/* constant expression evaluation / constant folding */
if (get_opt_constant_folding()) {
/* neither constants nor Tuple values can be evaluated */
if (iro != iro_Const && get_irn_mode(n) != mode_T) {
- unsigned fp_model = get_irg_fp_model(current_ir_graph);
- int old_fp_mode = tarval_fp_ops_enabled();
-
- tarval_enable_fp_ops((fp_model & fp_strict_algebraic) == 0);
/* try to evaluate */
tv = computed_value(n);
if (tv != tarval_bad) {
/* evaluation was successful -- replace the node. */
- ir_type *old_tp = get_irn_type(n);
- int i, arity = get_irn_arity(n);
+ ir_graph *irg = get_irn_irg(n);
- /*
- * Try to recover the type of the new expression.
- */
- for (i = 0; i < arity && !old_tp; ++i)
- old_tp = get_irn_type(get_irn_n(n, i));
-
- n = new_Const(tv);
-
- if (old_tp && get_type_mode(old_tp) == get_tarval_mode(tv))
- set_Const_type(n, old_tp);
+ n = new_r_Const(irg, tv);
DBG_OPT_CSTEVAL(oldn, n);
- tarval_enable_fp_ops(old_fp_mode);
return n;
}
- tarval_enable_fp_ops(old_fp_mode);
}
}
subexpressions within a block. */
if (get_opt_cse()) {
ir_node *o = n;
- n = identify_remember(current_ir_graph->value_table, o);
+ n = identify_remember(o);
if (o != n)
DBG_OPT_CSE(o, n);
}
(iro == iro_Proj)) /* Flags tested local. */
n = transform_node(n);
- /* Remove nodes with dead (Bad) input.
- Run always for transformation induced Bads. */
- n = gigo(n);
-
/* Now we can verify the node, as it has no dead inputs any more. */
- irn_vrfy(n);
+ irn_verify(n);
/* Now we have a legal, useful node. Enter it in hash table for cse.
Blocks should be unique anyways. (Except the successor of start:
is cse with the start block!) */
if (get_opt_cse() && (get_irn_opcode(n) != iro_Block)) {
ir_node *o = n;
- n = identify_remember(current_ir_graph->value_table, o);
+ n = identify_remember(o);
if (o != n)
DBG_OPT_CSE(o, n);
}
/**
* Wrapper for external use, set proper status bits after optimization.
*/
-ir_node *optimize_in_place(ir_node *n) {
+ir_node *optimize_in_place(ir_node *n)
+{
+ ir_graph *irg = get_irn_irg(n);
/* Handle graph state */
- assert(get_irg_phase_state(current_ir_graph) != phase_building);
+ assert(get_irg_phase_state(irg) != phase_building);
if (get_opt_global_cse())
- set_irg_pinned(current_ir_graph, op_pin_state_floats);
- if (get_irg_outs_state(current_ir_graph) == outs_consistent)
- set_irg_outs_inconsistent(current_ir_graph);
+ set_irg_pinned(irg, op_pin_state_floats);
+ if (get_irg_outs_state(irg) == outs_consistent)
+ set_irg_outs_inconsistent(irg);
/* FIXME: Maybe we could also test whether optimizing the node can
change the control graph. */
- set_irg_doms_inconsistent(current_ir_graph);
+ set_irg_doms_inconsistent(irg);
return optimize_in_place_2(n);
} /* optimize_in_place */
/**
* Calculate a hash value of a Const node.
*/
-static unsigned hash_Const(const ir_node *node) {
+static unsigned hash_Const(const ir_node *node)
+{
unsigned h;
/* special value for const, as they only differ in their tarval. */
- h = HASH_PTR(node->attr.con.tv);
- h = 9*h + HASH_PTR(get_irn_mode(node));
+ h = HASH_PTR(node->attr.con.tarval);
return h;
} /* hash_Const */
/**
* Calculate a hash value of a SymConst node.
*/
-static unsigned hash_SymConst(const ir_node *node) {
+static unsigned hash_SymConst(const ir_node *node)
+{
unsigned h;
- /* special value for const, as they only differ in their symbol. */
+ /* all others are pointers */
h = HASH_PTR(node->attr.symc.sym.type_p);
- h = 9*h + HASH_PTR(get_irn_mode(node));
return h;
} /* hash_SymConst */
/*
* Sets the default operation for an ir_ops.
*/
-ir_op_ops *firm_set_default_operations(ir_opcode code, ir_op_ops *ops) {
+ir_op_ops *firm_set_default_operations(ir_opcode code, ir_op_ops *ops)
+{
ops = firm_set_default_hash(code, ops);
ops = firm_set_default_computed_value(code, ops);
ops = firm_set_default_equivalent_node(code, ops);
ops = firm_set_default_transform_node(code, ops);
ops = firm_set_default_node_cmp_attr(code, ops);
- ops = firm_set_default_get_type(code, ops);
ops = firm_set_default_get_type_attr(code, ops);
ops = firm_set_default_get_entity_attr(code, ops);
projects / libfirm / blobdiff