https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114656
Bug ID: 114656
Summary: ~5% slowdown of 538.imagick_r on aarch64
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: missed-optimization, needs-bisection
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pheeck at gcc dot gnu.org
Blocks: 26163
Target Milestone: ---
Host: aarch64-gnu-linux
Target: aarch64-gnu-linux
As seen here
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=585.507.0
between commits
r14-9649-gbb04a11418f54c
r14-9728-g6fc84f680d098f
there was a 5% exec time slowdown of 538.imagick_r SPEC2017 benchmark on
aarch64 with compilation options -Ofast
5% slowdown can be also seen with -Ofast -march=native
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=584.507.0
The CPU is Ampere Altra Neoverse N1.
Btw here are the same graphs including also data for GCC13. It is clear that
this isn't a regression against GCC13.
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.7=882.507.0&plot.8=585.507.0&;
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.7=881.507.0&plot.8=584.507.0&;
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)
