Dear contributor,

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

In  arm-eabi cortex-m3 softfp, after:
  | commit gcc-16-3470-gbfa70ddb650
  | Author: Andrew Pinski <andrew.pinski@oss.qualcomm.com>
  | Date:   Thu Aug 28 17:20:21 2025 -0700
  | 
  |     forwprop: Copy the memcmp optimization from strlen to forwprop [PR116651]
  |     
  |     To better optimize code dealing with `memcmp == 0` where we have
  |     a small constant size, we can inline the memcmp in those cases.
  |     There is code to do this in strlen but that is run too late in
  | ... 38 lines of the commit log omitted.

Produces 3 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/dg.exp ...
  | FAIL: g++.dg/tree-ssa/vector-compare-1.C -std=gnu++11  scan-tree-dump-times optimized "== 24" 1
  | FAIL: g++.dg/tree-ssa/vector-compare-1.C -std=gnu++17  scan-tree-dump-times optimized "== 24" 1
  | FAIL: g++.dg/tree-ssa/vector-compare-1.C -std=gnu++26  scan-tree-dump-times optimized "== 24" 1

Used configuration :
 *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv7-m -mtune=cortex-m3 -mfloat-abi=softfp -mfpu=auto
 *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-cpu=cortex-m3 --with-float=softfp --target_board=-mthumb/-march=armv7-m/-mtune=cortex-m3/-mfloat-abi=softfp/-mfpu=auto qemu_cpu=cortex-m3

We track this bug report under https://linaro.atlassian.net/browse/GNU-1672. 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_gnu_embed_check_gcc--master-thumb_m3_softfp_eabi-build/508/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_gnu_embed_check_gcc--master-thumb_m3_softfp_eabi-build/508/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m3_softfp_eabi-build/508/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m3_softfp_eabi-build/508/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m3_softfp_eabi-build/507/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/bfa70ddb650ec91c2511d351b2b3c3f78dfad6d4/tcwg_gnu_embed_check_gcc/master-thumb_m3_softfp_eabi/reproduction_instructions.txt

Full commit : See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git