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simplify-rtx.c (simplify_binary_operation_1): Correct the condition for detecting cases like (a&a) and (a^a).

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* simplify-rtx.c (simplify_binary_operation_1): Correct the
	condition for detecting cases like (a&a) and (a^a).

From-SVN: r103955
This commit is contained in:
Saurabh Verma 2005-09-06 17:51:48 +00:00 committed by Ian Lance Taylor
parent 852993e381
commit f5d1572a8a
2 changed files with 7 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-09-06 Saurabh Verma <saurabh.verma@codito.com>
* simplify-rtx.c (simplify_binary_operation_1): Correct the
condition for detecting cases like (a&a) and (a^a).
2005-09-06 Keith Besaw <kbesaw@us.ibm.com>
* common.opt: Add option ftree-vect-loop-version.

4
gcc/simplify-rtx.c
View File

@ -1661,7 +1661,7 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode,
&& ((INTVAL (trueop1) & GET_MODE_MASK (mode))
== GET_MODE_MASK (mode)))
return simplify_gen_unary (NOT, mode, op0, mode);
if (trueop0 == trueop1
if (rtx_equal_p (trueop0, trueop1)
&& ! side_effects_p (op0)
&& GET_MODE_CLASS (mode) != MODE_CC)
return CONST0_RTX (mode);
@ -1696,7 +1696,7 @@ simplify_binary_operation_1 (enum rtx_code code, enum machine_mode mode,
&& GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT
&& (nonzero_bits (trueop0, mode) & ~INTVAL (trueop1)) == 0)
return op0;
if (trueop0 == trueop1 && ! side_effects_p (op0)
if (rtx_equal_p (trueop0, trueop1) && ! side_effects_p (op0)
&& GET_MODE_CLASS (mode) != MODE_CC)
return op0;
/* A & (~A) -> 0 */