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fold-const.c (operand_equal_p): Pass flags in recursive calls for binary and relational operations.

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* fold-const.c (operand_equal_p): Pass flags in recursive calls for
	binary and relational operations.  Add support for TRUTH_ANDIF_EXPR,
	TRUTH_ORIF_EXPR, TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR.
	* tree.c (commutative_tree_code): Also list UNORDERED_EXPR,
	ORDERED_EXPR, UNEQ_EXPR, LTGT_EXPR, TRUTH_AND_EXPR, TRUTH_OR_EXPR
	and TRUTH_XOR_EXPR.

From-SVN: r83433
This commit is contained in:
Roger Sayle 2004-06-21 12:59:58 +00:00 committed by Roger Sayle
parent 19aec19565
commit 54d581a26e
3 changed files with 39 additions and 3 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2004-06-21 Roger Sayle <roger@eyesopen.com>
* fold-const.c (operand_equal_p): Pass flags in recursive calls for
binary and relational operations. Add support for TRUTH_ANDIF_EXPR,
TRUTH_ORIF_EXPR, TRUTH_AND_EXPR, TRUTH_OR_EXPR and TRUTH_XOR_EXPR.
* tree.c (commutative_tree_code): Also list UNORDERED_EXPR,
ORDERED_EXPR, UNEQ_EXPR, LTGT_EXPR, TRUTH_AND_EXPR, TRUTH_OR_EXPR
and TRUTH_XOR_EXPR.
2004-06-21 Paolo Bonzini <bonzini@gnu.org>
* rtlanal.c (may_trap_p): Mark LTGT as trapping.

26
gcc/fold-const.c
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@ -2454,9 +2454,10 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags)
case '<':
case '2':
if (operand_equal_p (TREE_OPERAND (arg0, 0), TREE_OPERAND (arg1, 0), 0)
&& operand_equal_p (TREE_OPERAND (arg0, 1), TREE_OPERAND (arg1, 1),
0))
if (operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0), flags)
&& operand_equal_p (TREE_OPERAND (arg0, 1),
TREE_OPERAND (arg1, 1), flags))
return 1;
/* For commutative ops, allow the other order. */
@ -2506,6 +2507,25 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags)
return operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0), flags);
case TRUTH_ANDIF_EXPR:
case TRUTH_ORIF_EXPR:
return operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0), flags)
&& operand_equal_p (TREE_OPERAND (arg0, 1),
TREE_OPERAND (arg1, 1), flags);
case TRUTH_AND_EXPR:
case TRUTH_OR_EXPR:
case TRUTH_XOR_EXPR:
return (operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0), flags)
&& operand_equal_p (TREE_OPERAND (arg0, 1),
TREE_OPERAND (arg1, 1), flags))
|| (operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 1), flags)
&& operand_equal_p (TREE_OPERAND (arg0, 1),
TREE_OPERAND (arg1, 0), flags));
case RTL_EXPR:
return rtx_equal_p (RTL_EXPR_RTL (arg0), RTL_EXPR_RTL (arg1));

7
gcc/tree.c
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@ -3792,6 +3792,13 @@ commutative_tree_code (enum tree_code code)
case BIT_AND_EXPR:
case NE_EXPR:
case EQ_EXPR:
case UNORDERED_EXPR:
case ORDERED_EXPR:
case UNEQ_EXPR:
case LTGT_EXPR:
case TRUTH_AND_EXPR:
case TRUTH_XOR_EXPR:
case TRUTH_OR_EXPR:
return true;
default: