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[Bug rtl-optimization/63483] Scheduler performs Invalid move of aliased memory reference
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 08 Oct 2014 08:40:45 +0000
- Subject: [Bug rtl-optimization/63483] Scheduler performs Invalid move of aliased memory reference
- Auto-submitted: auto-generated
- References: <bug-63483-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63483
--- Comment #2 from UroÅ Bizjak <ubizjak at gmail dot com> ---
Created attachment 33665
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33665&action=edit
Proposed patch
Proposed patch prevents MEM_READONLY_P memory references to be moved over
possibly aliased memory (with alignment ANDs). The patch prevents early exit
for MEM_READONLY_P references when alignemt ANDs are involved. The aliasing is
determined in the code later in the function.