[Bug ipa/97816] New: [11 Regression] ICE in good_cloning_opportunity_p, at ipa-cp.c:3266 since r11-4949-gb86aedb0cc083efe712e530a723f1237051a6b56

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97816

            Bug ID: 97816
           Summary: [11 Regression] ICE in good_cloning_opportunity_p, at
                    ipa-cp.c:3266 since
                    r11-4949-gb86aedb0cc083efe712e530a723f1237051a6b56
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: jamborm at gcc dot gnu.org, marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 49554
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49554&action=edit
test-case

It's reduced from gcc SPEC2017 test:

$ gcc -std=c99 -O3 -flto=1 -march=znver1 -g -fprofile-generate -fgnu89-inline
-shared -fPIC reduced/*.
...
during IPA pass: cp
lto1: internal compiler error: in good_cloning_opportunity_p, at ipa-cp.c:3266
0x22cc3b2 good_cloning_opportunity_p
        /home/marxin/Programming/gcc/gcc/ipa-cp.c:3266
0x22d331a decide_about_value<tree_node*>
        /home/marxin/Programming/gcc/gcc/ipa-cp.c:5502
0x22d1cc4 decide_whether_version_node
        /home/marxin/Programming/gcc/gcc/ipa-cp.c:5573
0x22d25b9 ipcp_decision_stage
        /home/marxin/Programming/gcc/gcc/ipa-cp.c:5754
0x22d2e53 ipcp_driver
        /home/marxin/Programming/gcc/gcc/ipa-cp.c:5942
0x22d3014 execute
        /home/marxin/Programming/gcc/gcc/ipa-cp.c:6017

I'm reducing that more, but it goes very slowly.