[Bug bootstrap/112107] New: [14 Regression] bootstrap failure on i686-linux: gcc/ira-build.o differs

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112107

            Bug ID: 112107
           Summary: [14 Regression] bootstrap failure on i686-linux:
                    gcc/ira-build.o differs
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: slyfox at gcc dot gnu.org
  Target Milestone: ---

Noticed on this week's build on i686-unknown-linux-gnu build/host/target.

How to reproduce against r14-4967-g8697d3a1dcf327:

  $ ../gcc/configure --disable-multilib --enable-languages=c,c++
--enable-languages=c,c++ --enable-checking=release
  $ make STAGE1_CFLAGS=-O2
  ...
   Comparing stages 2 and 3
   Bootstrap comparison failure!
   gcc/ira-build.o differs

$ stage3-gcc/xgcc -Bstage3-gcc -v
Reading specs from stage3-gcc/specs
COLLECT_GCC=stage3-gcc/xgcc
COLLECT_LTO_WRAPPER=stage3-gcc/lto-wrapper
Target: i686-pc-linux-gnu
Configured with: /home/slyfox/dev/git/gcc/configure --disable-multilib
--enable-languages=c,c++ --enable-checking=release
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20231027 (experimental) (GCC)