https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115462
Bug ID: 115462
Summary: 416.gamess regressed 4-6% on x86_64 since
r15-882-g1d6199e5f8c1c0
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
CC: crazylht at gmail dot com
Blocks: 26163
Target Milestone: ---
Benchmark 416.gamess from SPECINT 2006 recently regressed on all
x86_64 CPUs we track using many of the compiler options we track. I
have bisected the one on Zen3 CPU using -O2 -flto (so -march=generic)
to r15-882-g1d6199e5f8c1c0 (liuhongt: Reduce cost of MEM (A + imm)).
Regressing hosts and options:
- zen2 -O2 -flto: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=292.50.0
- zen2 -O2 -march=native: 6%:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=291.50.0
- zen2 -O2 -flto -march=native: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=290.50.0
- zen2 -Ofast: 4%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=300.50.0
- skylake -O2: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=784.50.0
- skylake -O2 flto: 4%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=799.50.0
- skylake -O2 -march=native: 6%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=787.50.0
- skylake -O2 -flto -march=native: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=788.50.0
- skylake -Ofast: 4%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=789.50.0
- zen3 -O2 -flto: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=469.50.0
- zen3 -O2 -flto -fprofile-use: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=464.50.0
- zen3 -O2 -flto -march=native: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=465.50.0
- zen3 -Ofast: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=466.50.0
- zen4 -O2 -flto: 4%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=956.50.0
- zen4 -O2 -march=native: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=961.50.0
- zen4 -O2 -flto -march=native: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=993.50.0
- zen4 -Ofast: 4%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=967.50.0
- zen4 -Ofast -march=native: 6%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=965.50.0
- zen4 -Ofast -flto -march=native: 5%
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=992.50.0
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)
