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re PR rtl-optimization/69291 (wrong code at -O1 for ruby-2.3.0/regcomp.c:985:compile_length_quantifier_node()) 

2016-02-16  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/69291
	* ifcvt.c (noce_try_store_flag_constants): Re-instantiate
	noce_operand_ok check.

From-SVN: r233448
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Richard Biener 2016-02-16 10:53:08 +00:00 committed by Richard Biener
parent 2175df996b
commit d5b1a52eec
2 changed files with 8 additions and 1 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-02-16 Richard Biener <rguenther@suse.de>
PR rtl-optimization/69291
* ifcvt.c (noce_try_store_flag_constants): Re-instantiate
noce_operand_ok check.
2016-02-16 Tom de Vries <tom@codesourcery.com>
PR lto/67709

3
gcc/ifcvt.c
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@ -1277,7 +1277,8 @@ noce_try_store_flag_constants (struct noce_if_info *if_info)
/* Allow expressions that are not using the result or plain
registers where we handle overlap below. */
&& (REG_P (XEXP (a, 0))
|| ! reg_overlap_mentioned_p (if_info->x, XEXP (a, 0)))
|| (noce_operand_ok (XEXP (a, 0))
&& ! reg_overlap_mentioned_p (if_info->x, XEXP (a, 0))))
&& if_info->branch_cost >= 2)
{
common = XEXP (a, 0);