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[Bug tree-optimization/71815] SLSR misses several PHI candidate cases
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 09 Aug 2016 01:47:15 +0000
- Subject: [Bug tree-optimization/71815] SLSR misses several PHI candidate cases
- Auto-submitted: auto-generated
- References: <bug-71815-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71815
--- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Created attachment 39085
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39085&action=edit
Patch under test
Attaching a patch that passes regstrap. I want to do a little benchmarking
before submitting it upstream, and invite other targets to try it out also. I
expect overall mildly positive to neutral results, but since it will cause us
to optimize more cases that are right on the cost bubble, it's worth checking
out first.