/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
void **res;
ir_node *pred;
ir_graph *irg;
- int i, n = get_irn_arity(a);
+ int i, n;
+ if (get_nodes_block(a) != get_nodes_block(b))
+ return NULL;
+
+ n = get_irn_arity(a);
NEW_ARR_A(void *, res, n);
for (i = 0; i < n; ++i) {
ir_mode *mode = get_irn_mode(n);
if (mode_is_reference(mode)) {
- ir_node *left = get_binop_left(n);
- ir_node *right = get_binop_right(n);
- int ref_bits = get_mode_size_bits(mode);
+ ir_node *left = get_binop_left(n);
+ ir_node *right = get_binop_right(n);
+ unsigned ref_bits = get_mode_size_bits(mode);
if (is_Conv(left)) {
ir_mode *mode = get_irn_mode(left);
- int bits = get_mode_size_bits(mode);
+ unsigned bits = get_mode_size_bits(mode);
if (ref_bits == bits &&
mode_is_int(mode) &&
if (is_Conv(right)) {
ir_mode *mode = get_irn_mode(right);
- int bits = get_mode_size_bits(mode);
+ unsigned bits = get_mode_size_bits(mode);
if (ref_bits == bits &&
mode_is_int(mode) &&
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_A_MINUS_B);
return n;
}
- if (! is_reassoc_running()) {
- /* do NOT execute this code if reassociation is enabled, it does the inverse! */
- if (is_Mul(a)) {
- ir_node *ma = get_Mul_left(a);
- ir_node *mb = get_Mul_right(a);
-
- if (b == ma) {
- ir_node *blk = get_irn_n(n, -1);
- n = new_rd_Mul(
- get_irn_dbg_info(n), current_ir_graph, blk,
- ma,
- new_rd_Add(
- get_irn_dbg_info(n), current_ir_graph, blk,
- mb,
- new_r_Const_long(current_ir_graph, blk, mode, 1),
- mode),
- mode);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_MUL_A_X_A);
- return n;
- } else if (b == mb) {
- ir_node *blk = get_irn_n(n, -1);
- n = new_rd_Mul(
- get_irn_dbg_info(n), current_ir_graph, blk,
- mb,
- new_rd_Add(
- get_irn_dbg_info(n), current_ir_graph, blk,
- ma,
- new_r_Const_long(current_ir_graph, blk, mode, 1),
- mode),
- mode);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_MUL_A_X_A);
- return n;
- }
- }
- if (is_Mul(b)) {
- ir_node *ma = get_Mul_left(b);
- ir_node *mb = get_Mul_right(b);
-
- if (a == ma) {
- ir_node *blk = get_irn_n(n, -1);
- n = new_rd_Mul(
- get_irn_dbg_info(n), current_ir_graph, blk,
- ma,
- new_rd_Add(
- get_irn_dbg_info(n), current_ir_graph, blk,
- mb,
- new_r_Const_long(current_ir_graph, blk, mode, 1),
- mode),
- mode);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_MUL_A_X_A);
- return n;
- }
- if (a == mb) {
- ir_node *blk = get_irn_n(n, -1);
- n = new_rd_Mul(
- get_irn_dbg_info(n), current_ir_graph, blk,
- mb,
- new_rd_Add(
- get_irn_dbg_info(n), current_ir_graph, blk,
- ma,
- new_r_Const_long(current_ir_graph, blk, mode, 1),
- mode),
- mode);
- DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_MUL_A_X_A);
- return n;
- }
- }
- }
if (get_mode_arithmetic(mode) == irma_twos_complement) {
/* Here we rely on constants be on the RIGHT side */
if (is_Not(a)) {
if (mode == get_irn_mode(b)) {
ir_mode *ma, *mb;
-
- a = get_Conv_op(a);
- b = get_Conv_op(b);
+ ir_node *op_a = get_Conv_op(a);
+ ir_node *op_b = get_Conv_op(b);
/* check if it's allowed to skip the conv */
- ma = get_irn_mode(a);
- mb = get_irn_mode(b);
+ ma = get_irn_mode(op_a);
+ mb = get_irn_mode(op_b);
if (mode_is_reference(ma) && mode_is_reference(mb)) {
/* SubInt(ConvInt(aP), ConvInt(bP)) -> SubInt(aP,bP) */
+ a = op_a; b = op_b;
set_Sub_left(n, a);
set_Sub_right(n, b);
ir_mode *smode = get_irn_mode(a);
if (ta == get_mode_one(smode)) {
+ /* (L)1 * (L)b = (L)b */
ir_node *blk = get_irn_n(n, -1);
n = new_rd_Conv(get_irn_dbg_info(n), current_ir_graph, 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_irn_n(n, -1);
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);
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);
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_irn_n(n, -1);
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);
if (is_Const(a)) {
tarval *tv = get_Const_tarval(a);
if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)) {
- n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), b, b, mode);
+ /* 2.0 * b = b + b */
+ n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, 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);
if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)) {
- n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), a, a, mode);
+ /* a * 2.0 = a + a */
+ n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, 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) {
- tarval *tv = value_of(n);
ir_mode *mode = get_Div_resmode(n);
- ir_node *value = n;
+ ir_node *a = get_Div_left(n);
+ ir_node *b = get_Div_right(n);
+ ir_node *value;
+ 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_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;
+ }
+ }
+ value = n;
+ tv = value_of(n);
if (tv != tarval_bad) {
value = new_Const(get_tarval_mode(tv), tv);
* Transform a Mod node.
*/
static ir_node *transform_node_Mod(ir_node *n) {
- tarval *tv = value_of(n);
ir_mode *mode = get_Mod_resmode(n);
- ir_node *value = n;
+ ir_node *a = get_Mod_left(n);
+ ir_node *b = get_Mod_right(n);
+ ir_node *value;
+ 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);
+ 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);
+ 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);
+ 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(get_tarval_mode(tv), tv);
ir_node *a = get_DivMod_left(n);
ir_node *b = get_DivMod_right(n);
ir_mode *mode = get_DivMod_resmode(n);
- tarval *ta = value_of(a);
- tarval *tb = value_of(b);
+ tarval *ta, *tb;
int evaluated = 0;
+ ir_node *va, *vb;
+
+ 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))) {
- b = new_Const(mode, get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, b);
+ va = a;
+ vb = new_Const(mode, get_mode_null(mode));
+ DBG_OPT_CSTEVAL(n, vb);
goto make_tuple;
} else if (ta != tarval_bad) {
tarval *resa, *resb;
Jmp for X result!? */
resb = tarval_mod(ta, tb);
if (resb == tarval_bad) return n; /* Causes exception! */
- a = new_Const(mode, resa);
- b = new_Const(mode, resb);
- DBG_OPT_CSTEVAL(n, a);
- DBG_OPT_CSTEVAL(n, b);
+ va = new_Const(mode, resa);
+ vb = new_Const(mode, 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)) {
- a = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), a, mode);
- b = new_Const(mode, get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, a);
- DBG_OPT_CSTEVAL(n, b);
+ va = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, get_irn_n(n, -1), a, mode);
+ vb = new_Const(mode, get_mode_null(mode));
+ DBG_OPT_CSTEVAL(n, va);
+ DBG_OPT_CSTEVAL(n, vb);
goto make_tuple;
} else { /* Try architecture dependent optimization */
- arch_dep_replace_divmod_by_const(&a, &b, n);
- evaluated = a != NULL;
+ 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 */
- a = new_Const(mode, get_mode_one(mode));
- b = new_Const(mode, get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, a);
- DBG_OPT_CSTEVAL(n, b);
+ va = new_Const(mode, get_mode_one(mode));
+ vb = new_Const(mode, 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 */
}
} else if (ta == get_mode_null(mode) && value_not_zero(b, &dummy)) {
/* 0 / non-Const = 0 */
- b = a;
+ vb = va = a;
goto make_tuple;
}
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, a);
- set_Tuple_pred(n, pn_DivMod_res_mod, b);
+ set_Tuple_pred(n, pn_DivMod_res_div, va);
+ set_Tuple_pred(n, pn_DivMod_res_mod, vb);
}
return n;
/**
* 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;
* not run it in the equivalent_node() context.
*/
n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph,
- get_irn_n(n, -1), a, mode);
+ get_nodes_block(n), a, mode);
DBG_OPT_CONFIRM(oldn, n);
return n;
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 */
/**
ir_node *b_left = get_binop_left(b);
ir_node *b_right = get_binop_right(b);
ir_node *c = NULL;
- ir_node *op1, *op2;
+ ir_node *op1 = NULL;
+ ir_node *op2 = NULL;
if (is_op_commutative(op)) {
if (a_left == b_left) {
if (is_Const(c)) {
tarval *tv = get_Const_tarval(c);
- if (tarval_is_long(tv) && get_tarval_long(tv) == get_mode_size_bits(mode) - 1) {
+ 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);
if (is_Const(c)) {
tarval *tv = get_Const_tarval(c);
- if (tarval_is_long(tv) && get_tarval_long(tv) == get_mode_size_bits(mode) - 1) {
+ 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);
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_SymConst_symbol(pred),
- get_SymConst_kind(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);
}
ir_mode *mode_left = get_irn_mode(op_left);
ir_mode *mode_right = get_irn_mode(op_right);
- if (smaller_mode(mode_left, mode) && smaller_mode(mode_right, mode)) {
+ 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 (!get_opt_reassociation())
- return proj;
-
/*
* First step: normalize the compare op
* by placing the constant on the right side
return or;
if (get_tarval_long(tv1) + get_tarval_long(tv2)
- != get_mode_size_bits(mode))
+ != (int) get_mode_size_bits(mode))
return or;
/* yet, condition met */
if (! tarval_is_long(tv1))
return or;
- if (get_tarval_long(tv1) != get_mode_size_bits(mode))
+ if (get_tarval_long(tv1) != (int) get_mode_size_bits(mode))
return or;
/* yet, condition met */
if (! tarval_is_long(tv1))
return or;
- if (get_tarval_long(tv1) != get_mode_size_bits(mode))
+ if (get_tarval_long(tv1) != (int) get_mode_size_bits(mode))
return or;
/* yet, condition met */
return c;
}
}
+
+ if (is_Unknown(a)) { /* Conv_A(Unknown_B) -> Unknown_A */
+ ir_mode *mode = get_irn_mode(n);
+ return new_r_Unknown(current_ir_graph, mode);
+ }
+
return n;
} /* transform_node_Conv */
* @param n The node to normalize
*/
static void normalize_node(ir_node *n) {
- if (get_opt_reassociation()) {
- if (is_op_commutative(get_irn_op(n))) {
- ir_node *l = get_binop_left(n);
- ir_node *r = get_binop_right(n);
-
- /* For commutative operators perform a OP b == b OP a but keep
- * constants on the RIGHT side. This helps greatly in some
- * optimizations. Moreover we use the idx number to make the form
- * deterministic. */
- if (!operands_are_normalized(l, r)) {
- set_binop_left(n, r);
- set_binop_right(n, l);
- }
+ if (is_op_commutative(get_irn_op(n))) {
+ ir_node *l = get_binop_left(n);
+ ir_node *r = get_binop_right(n);
+
+ /* For commutative operators perform a OP b == b OP a but keep
+ * constants on the RIGHT side. This helps greatly in some
+ * optimizations. Moreover we use the idx number to make the form
+ * deterministic. */
+ if (!operands_are_normalized(l, r)) {
+ set_binop_left(n, r);
+ set_binop_right(n, l);
}
}
} /* normalize_node */
projects / libfirm / blobdiff