https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107946
Bug ID: 107946
Summary: [13 Regression] 507.cactuBSSN_r regresses by ~9% on
znver3 with PGO since r13-3875-g9e11ceef165bc0
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: jamborm at gcc dot gnu.org, rguenth at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
The revision r13-3875-g9e11ceef165bc0 was supposed to speed up the benchmark,
but it makes it slower w/ -O2 -flto and PGO:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=694.437.0
Similar regression can be seen w/o LTO as well:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=463.437.0
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)
