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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/115138] New: [15 Regression] Bootstrap
 compare-debug fail after r15-580-gf3e5f4c58591f5
Date: Fri, 17 May 2024 14:20:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115138

            Bug ID: 115138
           Summary: [15 Regression] Bootstrap compare-debug fail after
                    r15-580-gf3e5f4c58591f5
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: iains at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
            Target: x86_64-darwin

The compare fail is a symbol name mismatch (AFAICT) the code is otherwise
identical.

a single fail fails gcc/d/opover.o

There's:

        .const
_CSWTCH.155:
        .byte   38
        .byte   37
        .byte   40
        .byte   39

where the stage1 compiler (and x86_64 Linux) produces _CSWTCH.154

At present, still trying to figure out how to debug this further .. it's D =
so
no preprocessed output - I guess will have to try tree dumps.=