[Bug ipa/115533] New: [12/13/14/15 regression] flac miscompiled with -O3 -march=znver2 -fipa-pta -fno-vect-cost-model

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115533

            Bug ID: 115533
           Summary: [12/13/14/15 regression] flac miscompiled with -O3
                    -march=znver2 -fipa-pta -fno-vect-cost-model
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sjames at gcc dot gnu.org
            Blocks: 68331
  Target Milestone: ---

Created attachment 58458
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58458&action=edit
replaygain_analysis.i

Hit this when building flac with -O3 -march=znver2 -fipa-pta
-fno-vect-cost-model.

I don't yet have a reduced runtime testcase, working on it though.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68331
[Bug 68331] [meta-bug] fipa-pta issues