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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/115450] New: cpu2017 502.gcc runtime
 miscompute
Date: Wed, 12 Jun 2024 01:39:56 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 15.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: kugan at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115450

            Bug ID: 115450
           Summary: cpu2017 502.gcc runtime miscompute
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kugan at gcc dot gnu.org
  Target Milestone: ---

5022.gcc is meicompiling for aarch64 with -O3 -Wl,-z,muldefs -lm
-fallow-argument-mismatch -fpermissive -fstack-arrays -flto
-Wl,--sort-section=3Dname -fno-strict-aliasing -fgnu89-inline -march=3Dnati=
ve
-mcpu=3Dneoverse-v2 -msve-vector-bits=3D128

gcc -v
Using built-in specs.
COLLECT_GCC=3D/home/kvivekananda/install_base/bin/gcc
COLLECT_LTO_WRAPPER=3D/home/kvivekananda/install_base/libexec/gcc/aarch64-u=
nknown-linux-gnu/15.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: ../gcc_base/configure --enable-multiarch=3Dyes
--enable-languages=3Dc,c++,fortran,lto --disable-bootstrap
--prefix=3D/home/kvivekananda/install_base : (reconfigured) ../gcc_base/con=
figure
--enable-multiarch=3Dyes --disable-bootstrap
--prefix=3D/home/kvivekananda/install_base --enable-languages=3Dc,c++,fortr=
an,lto
--no-create --no-recursion
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.0.0 20240607 (experimental) (GCC)=20


Bisect points to:
[d93353e6423ecaaae9fa47d0935caafd9abfe4de] Do single-lane SLP discovery for
reductions=