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From: "guojiufu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/106928] New: 500.perlbench_r fail(VE) since r13-1933
Date: Tue, 13 Sep 2022 13:56:22 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106928

            Bug ID: 106928
           Summary: 500.perlbench_r fail(VE) since r13-1933
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: guojiufu at gcc dot gnu.org
  Target Milestone: ---

With the latest trunk, the 500.perlbench_r (-Ofast) from spec2017 encounter=
 VE
on power9 and power10 on no matter with or without
-fno-unsafe-math-optimizations.

With bisect, the commit may be r13-1933 (Implement basic range operators to
enable floating point VRP).


One compiling command:
gcc     -std=3Dc99   -m64 -c -o reentr.o -DSPEC -DNDEBUG -DPERL_CORE -I.
-Idist/IO -Icpan/Time-HiRes -Icpan/HTML-Parser -Iext/re -Ispecrand
-DDOUBLE_SLASHES_SPECIAL=3D0 -DSPEC_AUTO_SUPPRESS_OPENMP -D_LARGE_FILES
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=3D64  -Ofast=20
-fno-unsafe-math-optimizations        -DSPEC_LINUX_PPC_LE=20=20=20
-fno-strict-aliasing -fgnu89-inline   -DSPEC_LP64  reentr.c



In configure, I use:

default=3Dbase:         # flags for all base=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20
   OPTIMIZE    =3D -Ofast  -fno-unsafe-math-optimizations=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
   FOPTIMIZE =3D -std=3Dlegacy
intrate,intspeed=3Dbase: # flags for integer base=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
   EXTRA_COPTIMIZE   =3D -fno-strict-aliasing -fgnu89-inline


Log message:
*** Miscompare of diffmail.4.800.10.17.19.300.out; for details see

benchspec/CPU/500.perlbench_r/run/run_base_refrate_base_64.0000/diffmail.4.=
800.10.17.19.300.out.mis
Error: 1x500.perlbench_r=