https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113295
Bug ID: 113295
Summary: SPEC 2006 416.gamess miscompares on Aarch64 when built
with -Ofast -march=native -flto
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: jamborm at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
Host: aarch64-linux
Target: aarch64-linux
Our Aarch64 benchmarker (armv8.2-a+crypto+fp16+rcpc+dotprod+ssbs)
signals that SPEC 2006 416.gamess miscompares when built with -Ofast
-march=native -flto and master revision r14-7022-g34d339bbd0c1f5.
*** Miscompare of cytosine.2.out;
1120: 1 C 0.027630132 0.018067739 0.002234116
1 C -223.432234062 7.107716215 -9.326017293
^
1121: 2 C 0.012259576 -0.006051645 -0.000067202
2 C -205.307990130 -173.019401916 -6.442472179
^
1122: 3 C -0.012829758 0.003221329 -0.000743429
3 C -0.900001858 -263.923127366 3.131404191
^
1123: 4 N -0.041204707 0.020932737 -0.000372560
4 N 291.766837166 -257.876625173 10.788390925
^
1124: 5 C 0.057007688 0.032540385 -0.000909621
5 C -204.215830139 57.403322317 -0.929403441
^
1125: 6 N -0.015041867 -0.049945043 0.002129121
6 N 117.540483305 300.802327718 -10.562573219
^
1126: 7 O -0.076442899 -0.041673056 -0.000117411
7 O 481.672983389 238.169793443 3.121961894
^
1127: 8 N 0.034391335 -0.016048119 -0.001905357
8 N -247.780884876 91.547672097 -1.133077767
^
1128: 9 H 0.014938973 0.008953835 0.000373759
9 H -3.948185240 0.659195159 -0.007774350
^
1129: 10 H -0.002268325 0.023480419 0.000010207
10 H -0.160267091 -4.621874235 -0.178161165
Unfortunately at the moment don't have another access to another
adequate Aarch64 machine to debug further and so at this time I cannot
provide more information (and so the component "target" is likely
bogus, sorry).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
