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re PR middle-end/48590 (Alias analysis confused by builtin-stack-save/restore)
authorRichard Guenther <rguenther@suse.de>
Thu, 14 Apr 2011 12:19:28 +0000 (12:19 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Thu, 14 Apr 2011 12:19:28 +0000 (12:19 +0000)
commitab4472fa10153d18b16704086d28599adae30e28
tree37469c49ec7265d49916385efd0f288cc4709c98tree
parent32dabdaff895ad60c48e5ebc2e8becedc0fd17d4commit | diff
re PR middle-end/48590 (Alias analysis confused by builtin-stack-save/restore)

2011-04-14  Richard Guenther  <rguenther@suse.de>

PR tree-optimization/48590
* tree-ssa-alias.c (ref_maybe_used_by_call_p_1): Handle
BUILT_IN_ALLOCA, BUILT_IN_STACK_SAVE and BUILT_IN_STACK_RESTORE.
(call_may_clobber_ref_p_1): Handle BUILT_IN_ALLOCA and
BUILT_IN_STACK_SAVE.
* tree-ssa-dce.c (propagate_necessity): Handle
BUILT_IN_ALLOCA, BUILT_IN_STACK_SAVE and BUILT_IN_STACK_RESTORE.

From-SVN: r172427
gcc/ChangeLog diff | blob | history
gcc/tree-ssa-alias.c diff | blob | history
gcc/tree-ssa-dce.c diff | blob | history