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combine.c (combine_simplify_rtx): Avoid mis-simplifying conditionals for STORE_FLAG_VALUE==-1 case.

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* combine.c (combine_simplify_rtx): Avoid mis-simplifying conditionals
	for STORE_FLAG_VALUE==-1 case.

Co-Authored-By: Eric Botcazou <ebotcazou@adacore.com>

From-SVN: r172930
This commit is contained in:
Maxim Kuvyrkov 2011-04-25 12:06:27 +00:00 • committed by Maxim Kuvyrkov
parent 0c289711f3
commit 5157a881bb
2 changed files with 10 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-04-25 Maxim Kuvyrkov <maxim@codesourcery.com>
Eric Botcazou <ebotcazou@adacore.com>
* combine.c (combine_simplify_rtx): Avoid mis-simplifying conditionals
for STORE_FLAG_VALUE==-1 case.
2011-04-24 Richard Sandiford <richard.sandiford@linaro.org>
PR target/43804

5
gcc/combine.c
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@ -5787,7 +5787,10 @@ combine_simplify_rtx (rtx x, enum machine_mode op0_mode, int in_dest,
/* If STORE_FLAG_VALUE is -1, we have cases similar to
those above. */
if (STORE_FLAG_VALUE == -1
if (in_cond)
;
else if (STORE_FLAG_VALUE == -1
&& new_code == NE && GET_MODE_CLASS (mode) == MODE_INT
&& op1 == const0_rtx
&& (num_sign_bit_copies (op0, mode)