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fold-const.c (operand_equal_p): Temporarily support NULL args.

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* fold-const.c (operand_equal_p): Temporarily support NULL args.
	(operand_equal_p, case ARRAY_REF): Compare args 2 and 3.
	(operand_equal_p, case COMPONENT_REF): Likewise, for arg 2.

From-SVN: r84990
This commit is contained in:
Richard Kenner 2004-07-21 01:21:11 +00:00 • committed by Richard Kenner
parent 0e28378a9a
commit 462fdcce48
2 changed files with 31 additions and 3 deletions
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6
gcc/ChangeLog
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@ -2,6 +2,12 @@
* config/arm/arm.c (thumb_expand_prologue): Remove bogus GEN_INT.
2004-07-20 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* fold-const.c (operand_equal_p): Temporarily support NULL args.
(operand_equal_p, case ARRAY_REF): Compare args 2 and 3.
(operand_equal_p, case COMPONENT_REF): Likewise, for arg 2.
2004-07-20 Zack Weinberg <zack@codesourcery.com>
* rtl.h (plus_constant): Delete.

28
gcc/fold-const.c
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@ -2348,8 +2348,17 @@ truth_value_p (enum tree_code code)
int
operand_equal_p (tree arg0, tree arg1, unsigned int flags)
{
/* If one is specified and the other isn't, they aren't equal and if
neither is specified, they are.
??? This is temporary and is meant only to handle the cases of the
optional operands for COMPONENT_REF and ARRAY_REF. */
if ((arg0 && !arg1) || (!arg0 && arg1))
return 0;
else if (!arg0 && !arg1)
return 1;
/* If either is ERROR_MARK, they aren't equal. */
if (TREE_CODE (arg0) == ERROR_MARK || TREE_CODE (arg1) == ERROR_MARK)
else if (TREE_CODE (arg0) == ERROR_MARK || TREE_CODE (arg1) == ERROR_MARK)
return 0;
/* If both types don't have the same signedness, then we can't consider
@ -2483,13 +2492,26 @@ operand_equal_p (tree arg0, tree arg1, unsigned int flags)
return operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0), flags);
case COMPONENT_REF:
case ARRAY_REF:
case ARRAY_RANGE_REF:
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));
TREE_OPERAND (arg1, 1), flags)
&& operand_equal_p (TREE_OPERAND (arg0, 2),
TREE_OPERAND (arg1, 2), flags)
&& operand_equal_p (TREE_OPERAND (arg0, 3),
TREE_OPERAND (arg1, 3), flags));
case COMPONENT_REF:
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, 2),
TREE_OPERAND (arg1, 2), flags));
case BIT_FIELD_REF:
return (operand_equal_p (TREE_OPERAND (arg0, 0),