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re PR rtl-optimization/33224 (failing rtl iv analysis (maybe due to df))

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PR rtl-optimization/33224
	* loop-iv.c (latch_dominating_def): Check that the definition belongs
	to the analysed region.

From-SVN: r127996
This commit is contained in:
Zdenek Dvorak 2007-08-31 17:34:45 +02:00 committed by Zdenek Dvorak
parent beb32b5981
commit 75b226408d
2 changed files with 8 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-08-31 Zdenek Dvorak <ook@ucw.cz>
PR rtl-optimization/33224
* loop-iv.c (latch_dominating_def): Check that the definition belongs
to the analysed region.
2007-08-31 Richard Guenther <rguenther@suse.de> 2007-08-31 Richard Guenther <rguenther@suse.de>
* function.c (allocate_struct_function): Do not set * function.c (allocate_struct_function): Do not set

3
gcc/loop-iv.c
View File

@ -301,7 +301,8 @@ latch_dominating_def (rtx reg, struct df_ref **def)
for (adef = DF_REG_DEF_CHAIN (regno); adef; adef = adef->next_reg) for (adef = DF_REG_DEF_CHAIN (regno); adef; adef = adef->next_reg)
{ {
if (!bitmap_bit_p (bb_info->out, DF_REF_ID (adef))) if (!bitmap_bit_p (df->blocks_to_analyze, DF_REF_BB (adef)->index)
|| !bitmap_bit_p (bb_info->out, DF_REF_ID (adef)))
continue; continue;
/* More than one reaching definition. */ /* More than one reaching definition. */