[Bug tree-optimization/114268] New: [14 Regression] 5% exec time regression in 454.calculix on Aarch64

[pheeck at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114268

            Bug ID: 114268
           Summary: [14 Regression] 5% exec time regression in
                    454.calculix on Aarch64
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: missed-optimization, needs-bisection
          Severity: normal
          Priority: P3
         Component: tree-optimization
          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 on the graph here

https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=579.170.0

between

g:e42287eaed2c93f1
and
g:4d9da4199d1cc067

we detected a 5% exec time slowdown of the 454.calculix 2006 SPEC benchmark
with the cmdline options -O2 -march=native -flto on our aarch64 machine (ampere
altra).


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)