[Linaro-TCWG-CI] gcc-15-7871-gf870302515d: 3 regressions on aarch64

[ci_notify@linaro.org]

Dear contributor,

Our automatic CI has detected problems related to your patch(es). Please find some details below.

In gcc_check master-aarch64, after:
  | commit gcc-15-7871-gf870302515d
  | Author: Wilco Dijkstra <wilco.dijkstra@arm.com>
  | Date:   Mon Mar 3 16:47:32 2025 +0000
  | 
  |     AArch64: Enable early scheduling for -O3 and higher (PR118351)
  |     
  |     Enable the early scheduler on AArch64 for O3/Ofast.  This means GCC15 benefits
  |     from much faster build times with -O2, but avoids the regressions in lbm which
  |     is very sensitive to minor scheduling changes due to long FMA chains.
  | ... 7 lines of the commit log omitted.

Produces 3 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.dg/guality/guality.exp ...
  | FAIL: gcc.dg/guality/pr36728-3.c -O3 -g  -DPREVENT_OPTIMIZATION  line 14 y == 2
  | FAIL: gcc.dg/guality/pr68860-1.c -O3 -g  -DPREVENT_OPTIMIZATION  line 14 y == 2
  | FAIL: gcc.dg/guality/pr68860-2.c -O3 -g  -DPREVENT_OPTIMIZATION  line 14 y == 2

Used configuration :
 *CI config* tcwg_gcc_check master-aarch64
 *configure and test flags:* none, autodetected on aarch64-unknown-linux-gnu

We track this bug report under https://linaro.atlassian.net/browse/GNU-1530. Please let us know if you have a fix.

If you have any questions regarding this report, please ask on linaro-toolchain@lists.linaro.org mailing list.

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The information below contains the details of the failures, and the ways to reproduce a debug environment:

You can find the failure logs in *.log.1.xz files in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3404/artifact/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3404/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3404/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3404/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gcc_check--master-aarch64-build/3403/artifact/artifacts

Instruction to reproduce the build : https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/f870302515d5fcf7355f0108c3ead0038ff326fd/tcwg_gcc_check/master-aarch64/reproduction_instructions.txt

Full commit : https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=f870302515d5fcf7355f0108c3ead0038ff326fd