[Linaro-TCWG-CI] gcc-16-7262-gf7f2b73b9c1e: 2 regressions 2 fixes on master-thumb_m55_hard_eabi

[ci_notify@linaro.org]

Dear contributor,

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

In  arm-eabi cortex-m55 hard, after:
  | commit gcc-16-7262-gf7f2b73b9c1e
  | Author: Christophe Lyon <christophe.lyon@arm.com>
  | Date:   Tue Feb 3 13:07:10 2026 +0000
  | 
  |     testsuite: arm: Make arm_neon_ok_nocache consistent with other effective-targets
  |     
  |     A recent patch updated arm_neon_ok_nocache with an improved list of
  |     flags to try, but was not consistent with
  |     arm_v8_3a_complex_neon_ok,_nocache arm_v8_2a_fp16_neon_ok_nocache,
  | ... 14 lines of the commit log omitted.

Produces 2 regressions 2 fixes:
  | 
  | regressions.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: experimental/simd/pr109261_constexpr_simd.cc -mcpu=unset -march=armv7-a+simd -mfpu=auto -ffast-math -O2 -Wno-psabi (test for excess errors)
  | FAIL: experimental/simd/pr115454_find_last_set.cc -mcpu=unset -march=armv7-a+simd -mfpu=auto -ffast-math -O2 -Wno-psabi (test for excess errors)
  | 
  | fixes.sum:
  | Running libstdc++:libstdc++-dg/conformance.exp ...
  | FAIL: experimental/simd/pr109261_constexpr_simd.cc -mfloat-abi=softfp -mcpu=unset -march=armv7-a+simd -mfpu=auto -ffast-math -O2 -Wno-psabi (test for excess errors)
  | FAIL: experimental/simd/pr115454_find_last_set.cc -mfloat-abi=softfp -mcpu=unset -march=armv7-a+simd -mfpu=auto -ffast-math -O2 -Wno-psabi (test for excess errors)

Used configuration :
 *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb -march=armv8.1-m.main+mve.fp+fp.dp -mtune=cortex-m55 -mfloat-abi=hard -mfpu=auto
 *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=thumb --with-arch=armv8.1-m.main+mve.fp+fp.dp --with-float=hard --target_board=-mthumb/-march=armv8.1-m.main+mve.fp+fp.dp/-mtune=cortex-m55/-mfloat-abi=hard/-mfpu=auto qemu-cpu=cortex-m55

We track this bug report under https://linaro.atlassian.net/browse/GNU-1853. 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_m55_hard_eabi-build/1090/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_m55_hard_eabi-build/1090/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_m55_hard_eabi-build/1090/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/1090/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_gnu_embed_check_gcc--master-thumb_m55_hard_eabi-build/1089/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/f7f2b73b9c1e0101b7278893fc28a0769ca760df/tcwg_gnu_embed_check_gcc/master-thumb_m55_hard_eabi/reproduction_instructions.txt

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