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dojump.c (do_jump): Handle side-effecting TRUTH_AND_EXPR and TRUTH_OR_EXPR.

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2005-10-21  Paolo Bonzini  <bonzini@gnu.org>

	* dojump.c (do_jump): Handle side-effecting TRUTH_AND_EXPR and
	TRUTH_OR_EXPR.

From-SVN: r105723
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Paolo Bonzini 2005-10-21 07:28:48 +00:00 committed by Paolo Bonzini
parent b68fe99446
commit 97191ef99f
2 changed files with 13 additions and 4 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-10-21 Paolo Bonzini <bonzini@gnu.org>
* dojump.c (do_jump): Handle side-effecting TRUTH_AND_EXPR and
TRUTH_OR_EXPR.
2005-10-20 Steven Bosscher <stevenb@suse.de> 2005-10-20 Steven Bosscher <stevenb@suse.de>
PR tree-optimization/24225 PR tree-optimization/24225

12
gcc/dojump.c
View File

@ -511,8 +511,10 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
break; break;
case TRUTH_AND_EXPR: case TRUTH_AND_EXPR:
/* High branch cost, expand as the bitwise AND of the conditions. */ /* High branch cost, expand as the bitwise AND of the conditions.
if (BRANCH_COST >= 4) Do the same if the RHS has side effects, because we're effectively
turning a TRUTH_AND_EXPR into a TRUTH_ANDIF_EXPR. */
if (BRANCH_COST >= 4 || TREE_SIDE_EFFECTS (TREE_OPERAND (exp, 1)))
goto normal; goto normal;
if (if_false_label == NULL_RTX) if (if_false_label == NULL_RTX)
@ -529,8 +531,10 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
break; break;
case TRUTH_OR_EXPR: case TRUTH_OR_EXPR:
/* High branch cost, expand as the bitwise OR of the conditions. */ /* High branch cost, expand as the bitwise OR of the conditions.
if (BRANCH_COST >= 4) Do the same if the RHS has side effects, because we're effectively
turning a TRUTH_OR_EXPR into a TRUTH_ORIF_EXPR. */
if (BRANCH_COST >= 4 || TREE_SIDE_EFFECTS (TREE_OPERAND (exp, 1)))
goto normal; goto normal;
if (if_true_label == NULL_RTX) if (if_true_label == NULL_RTX)