# include "config.h"
#endif
-#ifdef HAVE_STRING_H
#include <string.h>
-#endif
#include "irnode_t.h"
#include "irgraph_t.h"
#include "irarch.h"
#include "hashptr.h"
#include "archop.h"
-#include "opt_polymorphy.h"
#include "opt_confirms.h"
+#include "opt_polymorphy.h"
#include "irtools.h"
#include "xmalloc.h"
* @return
* The operations.
*/
-static ir_op_ops *firm_set_default_computed_value(ir_opcode code, ir_op_ops *ops)
-{
+static ir_op_ops *firm_set_default_computed_value(ir_opcode code, ir_op_ops *ops) {
#define CASE(a) \
case iro_##a: \
ops->computed_value = computed_value_##a; \
*/
static ir_node *equivalent_node_Sub(ir_node *n) {
ir_node *oldn = n;
- ir_node *a, *b;
+ ir_node *b;
ir_mode *mode = get_irn_mode(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;
- a = get_Sub_left(n);
b = get_Sub_right(n);
/* Beware: modes might be different */
if (classify_tarval(value_of(b)) == TV_CLASSIFY_NULL) {
+ ir_node *a = get_Sub_left(n);
if (mode == get_irn_mode(a)) {
n = a;
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_NEUTRAL_0);
}
- } else if (get_irn_op(a) == op_Add) {
- if (mode_wrap_around(mode)) {
- ir_node *left = get_Add_left(a);
- ir_node *right = get_Add_right(a);
-
- if (left == b) {
- if (mode == get_irn_mode(right)) {
- n = right;
- DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
- }
- } else if (right == b) {
- if (mode == get_irn_mode(left)) {
- n = left;
- DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
- }
- }
- }
}
return n;
} /* equivalent_node_Sub */
/* optimize symmetric unop */
if (get_irn_op(pred) == get_irn_op(n)) {
n = get_unop_op(pred);
- DBG_OPT_ALGSIM2(oldn, pred, n);
+ DBG_OPT_ALGSIM2(oldn, pred, n, FS_OPT_IDEM_UNARY);
}
return n;
} /* equivalent_node_idempotent_unop */
/** Optimize Not(Not(x)) == x. */
#define equivalent_node_Not equivalent_node_idempotent_unop
-/** --x == x ??? Is this possible or can --x raise an
+/** -(-x) == x ??? Is this possible or can --x raise an
out of bounds exception if min =! max? */
#define equivalent_node_Minus equivalent_node_idempotent_unop
if (classify_tarval(value_of(b)) == TV_CLASSIFY_ONE) { /* div(x, 1) == x */
/* Turn Div into a tuple (mem, bad, a) */
ir_node *mem = get_Div_mem(n);
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_irn_n(n, -1);
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));
/* Div is not commutative. */
if (classify_tarval(value_of(b)) == TV_CLASSIFY_ONE) { /* Quot(x, 1) == x */
- /* Turn Quot into a tuple (mem, bad, a) */
+ /* Turn Quot into a tuple (mem, jmp, bad, a) */
ir_node *mem = get_Quot_mem(n);
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_irn_n(n, -1);
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));
/* Div is not commutative. */
if (classify_tarval(value_of(b)) == TV_CLASSIFY_ONE) { /* div(x, 1) == x */
- /* Turn DivMod into a tuple (mem, bad, a, 0) */
+ /* Turn DivMod into a tuple (mem, jmp, bad, a, 0) */
ir_node *a = get_DivMod_left(n);
ir_node *mem = get_Div_mem(n);
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_irn_n(n, -1);
ir_mode *mode = get_DivMod_resmode(n);
turn_into_tuple(n, pn_DivMod_max);
if (n_mode == mode_b) {
n = b; /* Convb(Conv*(xxxb(...))) == xxxb(...) */
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_CONV);
- } else if (mode_is_int(n_mode) || mode_is_character(n_mode)) {
+ } else if (mode_is_int(n_mode)) {
if (smaller_mode(b_mode, a_mode)){
n = b; /* ConvS(ConvL(xxxS(...))) == xxxS(...) */
DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_CONV);
* Optimize Proj(Tuple) and gigo() for ProjX in Bad block,
* ProjX(Load) and ProjX(Store).
*/
-static ir_node *equivalent_node_Proj(ir_node *n) {
- ir_node *oldn = n;
- ir_node *a = get_Proj_pred(n);
+static ir_node *equivalent_node_Proj(ir_node *proj) {
+ ir_node *oldn = proj;
+ ir_node *a = get_Proj_pred(proj);
- if ( get_irn_op(a) == op_Tuple) {
+ if (get_irn_op(a) == op_Tuple) {
/* Remove the Tuple/Proj combination. */
- if ( get_Proj_proj(n) <= get_Tuple_n_preds(a) ) {
- n = get_Tuple_pred(a, get_Proj_proj(n));
- DBG_OPT_TUPLE(oldn, a, n);
+ if ( get_Proj_proj(proj) <= get_Tuple_n_preds(a) ) {
+ proj = get_Tuple_pred(a, get_Proj_proj(proj));
+ DBG_OPT_TUPLE(oldn, a, proj);
} else {
- assert(0); /* This should not happen! */
- n = new_Bad();
+ /* This should not happen! */
+ assert(! "found a Proj with higher number than Tuple predecessors");
+ proj = new_Bad();
}
- } else if (get_irn_mode(n) == mode_X) {
- if (is_Block_dead(get_nodes_block(skip_Proj(n)))) {
+ } else if (get_irn_mode(proj) == mode_X) {
+ if (is_Block_dead(get_nodes_block(skip_Proj(proj)))) {
/* Remove dead control flow -- early gigo(). */
- n = new_Bad();
+ proj = new_Bad();
} else if (get_opt_ldst_only_null_ptr_exceptions()) {
ir_op *op = get_irn_op(a);
- if (op == op_Load || op == op_Store) {
+ if (op == op_Load) {
+ /* get the Load address */
+ ir_node *addr = get_Load_ptr(a);
+ ir_node *blk = get_irn_n(a, -1);
+ ir_node *confirm;
+
+ if (value_not_null(addr, &confirm)) {
+ if (confirm == NULL) {
+ /* this node may float if it did not depend on a Confirm */
+ set_irn_pinned(a, op_pin_state_floats);
+ }
+ if (get_Proj_proj(proj) == pn_Load_X_except) {
+ DBG_OPT_EXC_REM(proj);
+ return new_Bad();
+ } else
+ return new_r_Jmp(current_ir_graph, blk);
+ }
+ } else if (op == op_Store) {
/* get the load/store address */
- ir_node *addr = get_irn_n(a, 1);
+ ir_node *addr = get_Store_ptr(a);
+ ir_node *blk = get_irn_n(a, -1);
ir_node *confirm;
if (value_not_null(addr, &confirm)) {
/* this node may float if it did not depend on a Confirm */
set_irn_pinned(a, op_pin_state_floats);
}
- DBG_OPT_EXC_REM(n);
- return new_Bad();
+ if (get_Proj_proj(proj) == pn_Store_X_except) {
+ DBG_OPT_EXC_REM(proj);
+ return new_Bad();
+ } else
+ return new_r_Jmp(current_ir_graph, blk);
}
}
}
}
- return n;
+ return proj;
} /* equivalent_node_Proj */
/**
ir_node *b = get_CopyB_src(n);
if (a == b) {
- /* Turn CopyB into a tuple (mem, bad, bad) */
+ /* Turn CopyB into a tuple (mem, jmp, bad, bad) */
ir_node *mem = get_CopyB_mem(n);
ir_node *blk = get_nodes_block(n);
turn_into_tuple(n, pn_CopyB_max);
- set_Tuple_pred(n, pn_CopyB_M, mem);
+ set_Tuple_pred(n, pn_CopyB_M, mem);
set_Tuple_pred(n, pn_CopyB_X_regular, new_r_Jmp(current_ir_graph, blk));
- set_Tuple_pred(n, pn_CopyB_X_except, new_Bad()); /* no exception */
- set_Tuple_pred(n, pn_CopyB_M_except, new_Bad());
+ set_Tuple_pred(n, pn_CopyB_X_except, new_Bad()); /* no exception */
+ set_Tuple_pred(n, pn_CopyB_M_except, new_Bad());
}
return n;
} /* equivalent_node_CopyB */
/* By definition lower < upper, so if idx == lower -->
lower <= idx && idx < upper */
if (idx == lower) {
- /* Turn Bound into a tuple (mem, bad, idx) */
+ /* Turn Bound into a tuple (mem, jmp, bad, idx) */
ret_tuple = 1;
} else {
ir_node *pred = skip_Proj(idx);
/*
* One could expect that we simply return the previous
* Bound here. However, this would be wrong, as we could
- * add an exception Proj to a new location than.
- * So, we must turn in into a tuple
+ * add an exception Proj to a new location then.
+ * So, we must turn in into a tuple.
*/
ret_tuple = 1;
}
}
}
if (ret_tuple) {
- /* Turn Bound into a tuple (mem, bad, idx) */
+ /* Turn Bound into a tuple (mem, jmp, bad, idx) */
ir_node *mem = get_Bound_mem(n);
ir_node *blk = get_nodes_block(n);
turn_into_tuple(n, pn_Bound_max);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_MUL_A_X_A);
}
}
+ /* Here we rely on constants be on the RIGHT side */
+ else if (is_Not(a) && classify_Const(b) == CNST_ONE) {
+ /* ~x + 1 = -x */
+ ir_node *op = get_Not_op(a);
+ ir_node *blk = get_irn_n(n, -1);
+ n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, op, mode);
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_NOT_PLUS_1);
+ }
}
return n;
} /* transform_node_Add */
a = get_Sub_left(n);
b = get_Sub_right(n);
- HANDLE_BINOP_PHI(tarval_sub, a,b,c);
-
mode = get_irn_mode(n);
+restart:
+ HANDLE_BINOP_PHI(tarval_sub, a,b,c);
+
/* 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 (is_Add(a)) {
+ if (mode_wrap_around(mode)) {
+ ir_node *left = get_Add_left(a);
+ ir_node *right = get_Add_right(a);
+
+ /* FIXME: Does the Conv's word only for two complement or generally? */
+ if (left == b) {
+ if (mode != get_irn_mode(right)) {
+ /* This Sub is an effective Cast */
+ right = new_r_Conv(get_irn_irg(n), get_irn_n(n, -1), right, mode);
+ }
+ n = right;
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
+ } 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_irn_n(n, -1), left, mode);
+ }
+ n = left;
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_ADD_SUB);
+ }
+ }
+ } else if (mode_is_int(mode) && is_Conv(a) && is_Conv(b)) {
+ ir_mode *mode = get_irn_mode(a);
+
+ if (mode == get_irn_mode(b)) {
+ ir_mode *ma, *mb;
+
+ a = get_Conv_op(a);
+ b = get_Conv_op(b);
+
+ /* check if it's allowed to skip the conv */
+ ma = get_irn_mode(a);
+ mb = get_irn_mode(b);
+
+ if (mode_is_reference(ma) && mode_is_reference(mb)) {
+ /* SubInt(ConvInt(aP), ConvInt(bP)) -> SubInt(aP,bP) */
+ set_Sub_left(n, a);
+ set_Sub_right(n, b);
+
+ goto restart;
+ }
+ }
+ }
/* Beware of Sub(P, P) which cannot be optimized into a simple Minus ... */
- if (mode_is_num(mode) && mode == get_irn_mode(a) && (classify_Const(a) == CNST_NULL)) {
+ else if (mode_is_num(mode) && mode == get_irn_mode(a) && (classify_Const(a) == CNST_NULL)) {
n = new_rd_Minus(
get_irn_dbg_info(n),
current_ir_graph,
set_Sub_right(n, add);
DBG_OPT_ALGSIM0(n, n, FS_OPT_SUB_SUB_X_Y_Z);
}
-
return n;
} /* transform_node_Sub */
value = arch_dep_replace_div_by_const(n);
if (value != n) {
- /* Turn Div into a tuple (mem, bad, value) */
+ /* Turn Div into a tuple (mem, jmp, bad, value) */
ir_node *mem = get_Div_mem(n);
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_irn_n(n, -1);
turn_into_tuple(n, pn_Div_max);
set_Tuple_pred(n, pn_Div_M, mem);
value = arch_dep_replace_mod_by_const(n);
if (value != n) {
- /* Turn Mod into a tuple (mem, bad, value) */
+ /* Turn Mod into a tuple (mem, jmp, bad, value) */
ir_node *mem = get_Mod_mem(n);
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_irn_n(n, -1);
turn_into_tuple(n, pn_Mod_max);
set_Tuple_pred(n, pn_Mod_M, mem);
if (evaluated) { /* replace by tuple */
ir_node *mem = get_DivMod_mem(n);
- ir_node *blk = get_nodes_block(n);
+ ir_node *blk = get_irn_n(n, -1);
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));
return n;
} /* transform_node_Cond */
+typedef ir_node* (*recursive_transform) (ir_node *n);
+
+/**
+ * makes use of distributive laws for and, or, eor
+ * and(a OP c, b OP c) -> and(a, b) OP c
+ */
+static ir_node *transform_bitwise_distributive(ir_node *n,
+ recursive_transform trans_func)
+{
+ ir_node *oldn = n;
+ ir_node *a = get_binop_left(n);
+ ir_node *b = get_binop_right(n);
+ ir_op *op = get_irn_op(a);
+ ir_op *op_root = get_irn_op(n);
+
+ if(op != get_irn_op(b))
+ return n;
+
+ 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)) {
+ ir_node *blk = get_irn_n(n, -1);
+
+ n = exact_copy(n);
+ set_binop_left(n, a_op);
+ 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));
+
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_SHIFT_AND);
+ return n;
+ }
+ }
+
+ if (op == op_Eor) {
+ /* nothing to gain here */
+ return n;
+ }
+
+ if (op == op_Shrs || op == op_Shr || op == op_Shl
+ || op == op_And || op == op_Or || op == op_Eor) {
+ ir_node *a_left = get_binop_left(a);
+ ir_node *a_right = get_binop_right(a);
+ ir_node *b_left = get_binop_left(b);
+ ir_node *b_right = get_binop_right(b);
+ ir_node *c = NULL;
+ ir_node *op1, *op2;
+
+ if (is_op_commutative(op)) {
+ if (a_left == b_left) {
+ c = a_left;
+ op1 = a_right;
+ op2 = b_right;
+ } else if(a_left == b_right) {
+ c = a_left;
+ op1 = a_right;
+ op2 = b_left;
+ } else if(a_right == b_left) {
+ c = a_right;
+ op1 = a_left;
+ op2 = b_right;
+ }
+ }
+ if(a_right == b_right) {
+ c = a_right;
+ op1 = a_left;
+ op2 = b_left;
+ }
+
+ if (c != NULL) {
+ /* (a sop c) & (b sop c) => (a & b) sop c */
+ ir_node *blk = get_irn_n(n, -1);
+
+ ir_node *new_n = exact_copy(n);
+ set_binop_left(new_n, op1);
+ set_binop_right(new_n, op2);
+ new_n = trans_func(new_n);
+
+ 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);
+ } else {
+ n = exact_copy(a);
+ set_irn_n(n, -1, blk);
+ set_binop_left(n, new_n);
+ set_binop_right(n, c);
+ }
+
+
+ DBG_OPT_ALGSIM1(oldn, a, b, n, FS_OPT_SHIFT_AND);
+ return n;
+ }
+ }
+
+ return n;
+}
+
/**
* Transform an And.
*/
static ir_node *transform_node_And(ir_node *n) {
- ir_node *c, *oldn = n;
+ ir_node *c, *oldn;
ir_node *a = get_And_left(n);
ir_node *b = get_And_right(n);
HANDLE_BINOP_PHI(tarval_and, a,b,c);
+
+ n = transform_bitwise_distributive(n, transform_node_And);
+
return n;
} /* transform_node_And */
n = new_r_Not(current_ir_graph, get_irn_n(n, -1), a, mode_b);
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_EOR_TO_NOT);
+ } else {
+ n = transform_bitwise_distributive(n, transform_node_Eor);
}
return n;
static ir_node *transform_node_Not(ir_node *n) {
ir_node *c, *oldn = n;
ir_node *a = get_Not_op(n);
+ ir_op *op_a = get_irn_op(a);
HANDLE_UNOP_PHI(tarval_not,a,c);
/* check for a boolean Not */
if ( (get_irn_mode(n) == mode_b)
- && (get_irn_op(a) == op_Proj)
+ && (op_a == op_Proj)
&& (get_irn_mode(a) == mode_b)
&& (get_irn_op(get_Proj_pred(a)) == op_Cmp)) {
/* We negate a Cmp. The Cmp has the negated result anyways! */
n = new_r_Proj(current_ir_graph, get_irn_n(n, -1), get_Proj_pred(a),
mode_b, get_negated_pnc(get_Proj_proj(a), mode_b));
DBG_OPT_ALGSIM0(oldn, n, FS_OPT_NOT_CMP);
+ return n;
+ }
+ if (op_a == op_Sub && classify_Const(get_Sub_right(a)) == CNST_ONE) {
+ /* ~(x-1) = -x */
+ ir_node *op = get_Sub_left(a);
+ ir_node *blk = get_irn_n(n, -1);
+ n = new_rd_Minus(get_irn_dbg_info(n), current_ir_graph, blk, op, get_irn_mode(n));
+ DBG_OPT_ALGSIM0(oldn, n, FS_OPT_NOT_MINUS_1);
}
return n;
} /* transform_node_Not */
/**
* Transform a Minus.
+ * Optimize:
+ * -(~x) = x + 1
*/
static ir_node *transform_node_Minus(ir_node *n) {
ir_node *c, *oldn = n;
ir_node *a = get_Minus_op(n);
HANDLE_UNOP_PHI(tarval_neg,a,c);
+
+ if (is_Not(a)) {
+ /* -(~x) = x + 1 */
+ ir_node *op = get_Not_op(a);
+ ir_mode *mode = get_irn_mode(op);
+ tarval *tv = get_mode_one(mode);
+ ir_node *blk = get_irn_n(n, -1);
+ ir_node *c = new_r_Const(current_ir_graph, blk, mode, tv);
+ n = new_rd_Add(get_irn_dbg_info(n), current_ir_graph, blk, op, c, mode);
+ DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_MINUS_NOT);
+ }
+
return n;
} /* transform_node_Minus */
* Removes the exceptions and routes the memory to the NoMem node.
*/
static ir_node *transform_node_Proj_Div(ir_node *proj) {
- ir_node *n = get_Proj_pred(proj);
- ir_node *b = get_Div_right(n);
- ir_node *confirm;
+ ir_node *div = get_Proj_pred(proj);
+ ir_node *b = get_Div_right(div);
+ ir_node *confirm, *res, *new_mem;
long proj_nr;
if (value_not_zero(b, &confirm)) {
/* div(x, y) && y != 0 */
proj_nr = get_Proj_proj(proj);
- if (proj_nr == pn_Div_X_except) {
+ switch (proj_nr) {
+ case pn_Div_X_regular:
+ return new_r_Jmp(current_ir_graph, get_irn_n(div, -1));
+
+ case pn_Div_X_except:
/* we found an exception handler, remove it */
DBG_OPT_EXC_REM(proj);
return new_Bad();
- } else if (proj_nr == pn_Div_M) {
- ir_node *res = get_Div_mem(n);
- ir_node *new_mem = get_irg_no_mem(current_ir_graph);
+
+ case pn_Div_M:
+ res = get_Div_mem(div);
+ new_mem = get_irg_no_mem(current_ir_graph);
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);
}
- set_irn_pinned(n, op_pin_state_floats);
+ set_irn_pinned(div, op_pin_state_floats);
/* this is a Div without exception, we can remove the memory edge */
- set_Div_mem(n, new_mem);
+ set_Div_mem(div, new_mem);
return res;
}
}
* Removes the exceptions and routes the memory to the NoMem node.
*/
static ir_node *transform_node_Proj_Mod(ir_node *proj) {
- ir_node *n = get_Proj_pred(proj);
- ir_node *b = get_Mod_right(n);
- ir_node *confirm;
+ ir_node *mod = get_Proj_pred(proj);
+ ir_node *b = get_Mod_right(mod);
+ ir_node *confirm, *res, *new_mem;
long proj_nr;
if (value_not_zero(b, &confirm)) {
/* mod(x, y) && y != 0 */
proj_nr = get_Proj_proj(proj);
- if (proj_nr == pn_Mod_X_except) {
+ switch (proj_nr) {
+
+ case pn_Mod_X_regular:
+ return new_r_Jmp(current_ir_graph, get_irn_n(mod, -1));
+
+ case pn_Mod_X_except:
/* we found an exception handler, remove it */
DBG_OPT_EXC_REM(proj);
return new_Bad();
- } else if (proj_nr == pn_Mod_M) {
- ir_node *res = get_Mod_mem(n);
- ir_node *new_mem = get_irg_no_mem(current_ir_graph);
+
+ case pn_Mod_M:
+ res = get_Mod_mem(mod);
+ new_mem = get_irg_no_mem(current_ir_graph);
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);
}
- set_irn_pinned(n, op_pin_state_floats);
+ set_irn_pinned(mod, op_pin_state_floats);
/* this is a Mod without exception, we can remove the memory edge */
- set_Mod_mem(n, get_irg_no_mem(current_ir_graph));
- return res;
- } else if (proj_nr == pn_Mod_res && get_Mod_left(n) == b) {
- /* a % a = 0 if a != 0 */
- ir_mode *mode = get_irn_mode(proj);
- ir_node *res = new_Const(mode, get_mode_null(mode));
-
- DBG_OPT_CSTEVAL(n, res);
+ set_Mod_mem(mod, get_irg_no_mem(current_ir_graph));
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(mode, get_mode_null(mode));
+
+ DBG_OPT_CSTEVAL(mod, res);
+ return res;
+ }
}
}
return proj;
* Removes the exceptions and routes the memory to the NoMem node.
*/
static ir_node *transform_node_Proj_DivMod(ir_node *proj) {
- ir_node *n = get_Proj_pred(proj);
- ir_node *b = get_DivMod_right(n);
- ir_node *confirm;
+ ir_node *divmod = get_Proj_pred(proj);
+ ir_node *b = get_DivMod_right(divmod);
+ ir_node *confirm, *res, *new_mem;
long proj_nr;
if (value_not_zero(b, &confirm)) {
/* DivMod(x, y) && y != 0 */
proj_nr = get_Proj_proj(proj);
- if (proj_nr == pn_DivMod_X_except) {
+ switch (proj_nr) {
+
+ case pn_DivMod_X_regular:
+ return new_r_Jmp(current_ir_graph, get_irn_n(divmod, -1));
+
+ case pn_DivMod_X_except:
/* we found an exception handler, remove it */
DBG_OPT_EXC_REM(proj);
return new_Bad();
- } else if (proj_nr == pn_DivMod_M) {
- ir_node *res = get_DivMod_mem(n);
- ir_node *new_mem = get_irg_no_mem(current_ir_graph);
+
+ case pn_DivMod_M:
+ res = get_DivMod_mem(divmod);
+ new_mem = get_irg_no_mem(current_ir_graph);
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);
}
- set_irn_pinned(n, op_pin_state_floats);
+ set_irn_pinned(divmod, op_pin_state_floats);
/* this is a DivMod without exception, we can remove the memory edge */
- set_DivMod_mem(n, get_irg_no_mem(current_ir_graph));
+ set_DivMod_mem(divmod, get_irg_no_mem(current_ir_graph));
return res;
- } else if (proj_nr == pn_DivMod_res_mod && get_DivMod_left(n) == b) {
- /* a % a = 0 if a != 0 */
- ir_mode *mode = get_irn_mode(proj);
- ir_node *res = new_Const(mode, get_mode_null(mode));
- DBG_OPT_CSTEVAL(n, res);
- 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(mode, get_mode_null(mode));
+
+ DBG_OPT_CSTEVAL(divmod, res);
+ return res;
+ }
}
}
return proj;
(!mode_overflow_on_unary_Minus(mode) ||
(mode_is_int(mode) && (proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg)))) {
left = get_Minus_op(left);
- tv = tarval_sub(get_mode_null(mode), tv);
+ tv = tarval_neg(tv);
- proj_nr = get_inversed_pnc(proj_nr);
- changed |= 2;
+ if (tv != tarval_bad) {
+ proj_nr = get_inversed_pnc(proj_nr);
+ changed |= 2;
+ }
}
/* for integer modes, we have more */
tarval_cmp(tv, get_mode_null(mode)) == pn_Cmp_Gt) {
tv = tarval_sub(tv, get_mode_one(mode));
- proj_nr ^= pn_Cmp_Eq;
- changed |= 2;
+ if (tv != tarval_bad) {
+ proj_nr ^= pn_Cmp_Eq;
+ changed |= 2;
+ }
}
/* 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) {
tv = tarval_add(tv, get_mode_one(mode));
- proj_nr ^= pn_Cmp_Eq;
- changed |= 2;
+ if (tv != tarval_bad) {
+ proj_nr ^= pn_Cmp_Eq;
+ changed |= 2;
+ }
}
/* the following reassociations work only for == and != */
left = get_Sub_left(left);
tv = value_of(right);
- changed = 1;
+ if (tv != tarval_bad) {
+ changed = 1;
+ }
}
if (tv != tarval_bad) {
n = transform_node_Or_bf_store(n);
n = transform_node_Or_Rot(n);
+ if (n != oldn)
+ return n;
+
+ n = transform_bitwise_distributive(n, transform_node_Or);
return n;
} /* transform_node_Or */
* not be freed even if the equivalent node isn't the old one.
*/
static ir_node *transform_node(ir_node *n) {
- if (n->op->ops.transform_node)
- n = n->op->ops.transform_node(n);
+ ir_node *oldn;
+
+ /*
+ * Transform_node is the only "optimizing transformation" that might
+ * return a node with a different opcode. We iterate HERE until fixpoint
+ * to get the final result.
+ */
+ do {
+ oldn = n;
+ if (n->op->ops.transform_node)
+ n = n->op->ops.transform_node(n);
+ } while (oldn != n);
+
return n;
} /* transform_node */
/** 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);
+ return get_irn_proj_attr(a) != get_irn_proj_attr(b);
} /* node_cmp_attr_Proj */
/** Compares the attributes of two Filter nodes. */
/** Compares the attributes of two Alloc nodes. */
static int node_cmp_attr_Alloc(ir_node *a, ir_node *b) {
- return (get_irn_alloc_attr(a).where != get_irn_alloc_attr(b).where)
- || (get_irn_alloc_attr(a).type != get_irn_alloc_attr(b).type);
+ const alloc_attr *pa = get_irn_alloc_attr(a);
+ const alloc_attr *pb = get_irn_alloc_attr(b);
+ 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) {
- return (get_irn_free_attr(a).where != get_irn_free_attr(b).where)
- || (get_irn_free_attr(a).type != get_irn_free_attr(b).type);
+ const free_attr *pa = get_irn_free_attr(a);
+ const free_attr *pb = get_irn_free_attr(b);
+ 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) {
- return (get_irn_symconst_attr(a).num != get_irn_symconst_attr(b).num)
- || (get_irn_symconst_attr(a).sym.type_p != get_irn_symconst_attr(b).sym.type_p)
- || (get_irn_symconst_attr(a).tp != get_irn_symconst_attr(b).tp);
+ const symconst_attr *pa = get_irn_symconst_attr(a);
+ const symconst_attr *pb = get_irn_symconst_attr(b);
+ return (pa->num != pb->num)
+ || (pa->sym.type_p != pb->sym.type_p)
+ || (pa->tp != pb->tp);
} /* node_cmp_attr_SymConst */
/** Compares the attributes of two Call nodes. */
/** Compares the attributes of two Sel nodes. */
static int node_cmp_attr_Sel(ir_node *a, ir_node *b) {
- return (get_irn_sel_attr(a).ent->kind != get_irn_sel_attr(b).ent->kind)
- || (get_irn_sel_attr(a).ent->name != get_irn_sel_attr(b).ent->name)
- || (get_irn_sel_attr(a).ent->owner != get_irn_sel_attr(b).ent->owner)
- || (get_irn_sel_attr(a).ent->ld_name != get_irn_sel_attr(b).ent->ld_name)
- || (get_irn_sel_attr(a).ent->type != get_irn_sel_attr(b).ent->type);
+ const ir_entity *a_ent = get_Sel_entity(a);
+ const ir_entity *b_ent = get_Sel_entity(b);
+ 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);
} /* node_cmp_attr_Sel */
/** Compares the attributes of two Phi nodes. */
return (get_Confirm_cmp(a) != get_Confirm_cmp(b));
} /* node_cmp_attr_Confirm */
+/** Compares the attributes of two ASM nodes. */
+static int node_cmp_attr_ASM(ir_node *a, ir_node *b) {
+ int i, n;
+ const ir_asm_constraint *ca;
+ const ir_asm_constraint *cb;
+ ident **cla, **clb;
+
+ if (get_ASM_text(a) != get_ASM_text(b))
+ return 1;
+
+ /* Should we really check the constraints here? Should be better, but is strange. */
+ n = get_ASM_n_input_constraints(a);
+ if (n != get_ASM_n_input_constraints(b))
+ return 0;
+
+ ca = get_ASM_input_constraints(a);
+ cb = get_ASM_input_constraints(b);
+ for (i = 0; i < n; ++i) {
+ if (ca[i].pos != cb[i].pos || ca[i].constraint != cb[i].constraint)
+ return 1;
+ }
+
+ n = get_ASM_n_output_constraints(a);
+ if (n != get_ASM_n_output_constraints(b))
+ return 0;
+
+ ca = get_ASM_output_constraints(a);
+ cb = get_ASM_output_constraints(b);
+ for (i = 0; i < n; ++i) {
+ if (ca[i].pos != cb[i].pos || ca[i].constraint != cb[i].constraint)
+ return 1;
+ }
+
+ n = get_ASM_n_clobbers(a);
+ if (n != get_ASM_n_clobbers(b))
+ return 0;
+
+ cla = get_ASM_clobbers(a);
+ clb = get_ASM_clobbers(b);
+ for (i = 0; i < n; ++i) {
+ if (cla[i] != clb[i])
+ return 1;
+ }
+ return 0;
+} /* node_cmp_attr_ASM */
+
/**
* Set the default node attribute compare operation for an ir_op_ops.
*
CASE(Load);
CASE(Store);
CASE(Confirm);
+ CASE(ASM);
default:
/* leave NULL */;
}
return optimize_in_place_2(n);
} /* optimize_in_place */
+/**
+ * Return the block for all default nodes.
+ */
+static ir_node *get_block_default(const ir_node *self) {
+ return get_irn_n(self, -1);
+}
+
+/**
+ * Sets the block for all default nodes.
+ */
+static void set_block_default(ir_node *self, ir_node *blk) {
+ set_irn_n(self, -1, blk);
+}
+
+/**
+ * It's not allowed to get the block of a block. Anyway, returns
+ * the macroblock header in release mode.
+ */
+static ir_node *get_block_Block(const ir_node *self) {
+ assert(!"get_nodes_block() called for a block");
+ return get_irn_n(self, -1);
+}
+
+/**
+ * It's not allowed to set the block of a block. In release mode sets
+ * the macroblock header.
+ */
+static void set_block_Block(ir_node *self, ir_node *blk) {
+ assert(!"set_nodes_block() called for a block");
+ set_irn_n(self, -1, blk);
+}
+
+/**
+ * The anchor is always placed in the endblock or a graph.
+ */
+static ir_node *get_block_Anchor(const ir_node *self) {
+ return get_irn_n(self, anchor_end_block);
+}
+
+/**
+ * It's forbidden to set the anchor block.
+ */
+static void set_block_Anchor(ir_node *self, ir_node *blk) {
+ (void) self;
+ (void) blk;
+ assert(!"set_nodes_block() called for the Anchor");
+}
+
+/**
+ * Proj nodes are always in the block of it's predecessor.
+ */
+static ir_node *get_block_Proj(const ir_node *self) {
+ ir_node *pred = get_Proj_pred(self);
+ return get_nodes_block(pred);
+}
+
+/**
+ * Proj nodes silently ignore the block set request.
+ */
+static void set_block_Proj(ir_node *self, ir_node *blk) {
+ (void) self;
+ (void) blk;
+ assert(blk == get_block_Proj(self) && "trying to move Proj in another block!");
+}
+
+/**
+ * Set the default get_block operation.
+ */
+static ir_op_ops *firm_set_default_get_block(ir_opcode code, ir_op_ops *ops) {
+#define CASE(a) \
+ case iro_##a: \
+ ops->get_block = get_block_##a; \
+ ops->set_block = set_block_##a; \
+ break
+
+ switch (code) {
+ CASE(Block);
+ CASE(Anchor);
+#ifndef CAN_PLACE_PROJS
+ CASE(Proj);
+#endif
+ default:
+ /* not allowed to be NULL */
+ if (! ops->get_block)
+ ops->get_block = get_block_default;
+ if (! ops->set_block)
+ ops->set_block = set_block_default;
+ }
+
+ return ops;
+#undef CASE
+} /* firm_set_default_get_block */
+
/*
* Sets the default operation for an ir_ops.
*/
ir_op_ops *firm_set_default_operations(ir_opcode code, ir_op_ops *ops) {
+ ops = firm_set_default_get_block(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);
projects / libfirm / blobdiff