[Bug ipa/103246] New: [12 Regression] 416.gamess miscompare with -O2 -g -flto=auto since r12-5223-gecdf414bd89e6ba251f6b3f494407139b4dbae0e

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103246

            Bug ID: 103246
           Summary: [12 Regression] 416.gamess miscompare with -O2 -g
                    -flto=auto since
                    r12-5223-gecdf414bd89e6ba251f6b3f494407139b4dbae0e
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: hubicka at gcc dot gnu.org, marxin at gcc dot gnu.org
            Blocks: 26163
  Target Milestone: ---

Since the revision --size=train miscompares, I was able to track that to 2 LTO
object files that are needed for it to happen:

ecpder.fppized.o
ecplib.fppized.o


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)