Re: [Linaro-TCWG-CI] gcc-16-6952-g14cd2833b27a: 7 regressions on master-thumb_v8a_hard_eabi

The test fails on arm-eabi when testing with the following settings:
-mlittle-endian -mfloat-abi=hard -mcpu=cortex-a9 -mfpu=vfpv3

It only fails in the following torture option set:
-O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions

It also fails on numerous other 32-bit targets, but it depends on how
the memcpy-like loop gets vectorized and unrolled.

I hope we can live with the XPASSes.

On Apr 11, 2026, [email protected] wrote:

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

> In  arm-eabi thumb v8-a hard, after:
>   | commit gcc-16-6952-g14cd2833b27a
>   | Author: Alexandre Oliva <[email protected]>
>   | Date:   Wed Jan 21 00:30:24 2026 -0300
>   | 
>   |     testsuite: tolerate bogus warning in pr113026-1.c [PR113524]
>   |     
>   |     The bogus warning in pr113026-1.c is issued at some optimization
>   |     levels on various 32-bit targets.
>   |     
>   | ... 6 lines of the commit log omitted.

> Produces 7 regressions:
>   | 
>   | regressions.sum:
>   | Running gcc:gcc.dg/torture/dg-torture.exp ...
>   | XPASS: gcc.dg/torture/pr113026-1.c -O0  PR118504 (test for bogus messages, line 12)
>   | XPASS: gcc.dg/torture/pr113026-1.c -O1  PR118504 (test for bogus messages, line 12)
>   | XPASS: gcc.dg/torture/pr113026-1.c -O2  PR118504 (test for bogus messages, line 12)
>   | XPASS: gcc.dg/torture/pr113026-1.c -O2 -flto
>   | -fno-use-linker-plugin -flto-partition=none PR118504 (test for
>   | bogus messages, line 12)
>   | ... and 3 more

> Used configuration :
>  *CI config* tcwg_gnu_embed_check_gcc arm-eabi -mthumb
> -march=armv8-a+simd -mfpu=auto -mfloat-abi=hard
>  *configure and test flags:* --target arm-eabi --disable-multilib
> --with-mode=thumb --with-arch=armv8-a+simd
> --with-fpu=crypto-neon-fp-armv8 --with-float=hard
> --target_board=-mthumb/-march=armv8-a+simd/-mfpu=auto/-mfloat-abi=hard
> qemu_cpu=any

> We track this bug report under
> https://linaro.atlassian.net/browse/GNU-1870. Please let us know if
> you have a fix.

> If you have any questions regarding this report, please ask on
> [email protected] mailing list.

> -----------------8<--------------------------8<--------------------------8<--------------------------

> 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
>  *
> http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_v8a_hard_eabi-build/builds/10021/archive/artifacts/00-sumfiles/
> The full lists of regressions and improvements as well as configure
> and make commands are in
>  *
> http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_v8a_hard_eabi-build/builds/10021/archive/artifacts/notify/
> The list of [ignored] baseline and flaky failures are in
>  *
> http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_v8a_hard_eabi-build/builds/10021/archive/artifacts/sumfiles/xfails.xfail

> Current build :
> http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_v8a_hard_eabi-build/builds/10021/archive/artifacts/
> Reference build :
> http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-thumb_v8a_hard_eabi-build/builds/10020/archive/artifacts/

> Instruction to reproduce the build :
> https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/14cd2833b27a9700aa8679fd0a090e8ae7a5f44a/tcwg_gnu_embed_check_gcc/master-thumb_v8a_hard_eabi/reproduction_instructions.txt

> Full commit : See in git+ssh://[email protected]/git/gcc.git


-- 
Alexandre Oliva, happy hacker            https://blog.lx.oliva.nom.br/
Free Software Activist     FSFLA co-founder     GNU Toolchain Engineer
More tolerance and less prejudice are key for inclusion and diversity.
Excluding neuro-others for not behaving ""normal"" is *not* inclusive!