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

On 4/16/26 06:41, Alexandre Oliva via Gcc-regression wrote:
> 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

Isn't that combination excluded by
/* { dg-skip-if "" { *-*-* } { "-ftracer" } { "" } } */
at the beginning of the testcase?

>
> 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.
I suppose so.

That being said, I see this test PASS on all arm-*-eabi versions I am
testing:
-marm/-march=armv7-a/-mfpu=auto/-mfloat-abi=soft
-marm/-march=armv7-a/-mfpu=vfpv3-d16/-mfloat-abi=softfp
-mthumb/-march=armv6s-m/-mtune=cortex-m0/-mfloat-abi=soft/-mfpu=autp
-mthumb/-march=armv8-m.base/-mtune=cortex-m23/-mfloat-abi=soft/-mfpu=auto
-mthumb/-march=armv7-m/-mtune=cortex-m3/-mfloat-abi=softfp
-mthumb/-march=armv8-m.main+dsp+fp/-mtune=cortex-m33/-mfloat-abi=hard/-mfpu=auto
-mthumb/-march=armv7e-m+fp/-mtune=cortex-m4/-mfloat-abi=hard/-mfpu=auto
-mthumb/-march=armv8.1-m.main+mve.fp+fp.dp/-mtune=cortex-m55/-mfloat-abi=hard/-mfpu=auto
-mthumb/-march=armv7e-m+fp.dp/-mtune=cortex-m7/-mfloat-abi=hard/-mfpu=auto
-mthumb/-march=armv7-a/-mfpu=vfpv3-d16/-mfloat-abi=softfp
-mthumb/-march=armv8-a+simd/-mfpu=auto/-mfloat-abi=hard


I see one failure:
FAIL: gcc.dg/torture/pr113026-1.c   -O3 -g   (test for bogus messages,
line 12)

on armeb-none-eabi with -marm/-march=armv7-a/-mfpu=neon/-mfloat-abi=hard

on arm-linux-gnueabihf and armeb-linux-gnueabihf the tests PASS.

In summary on arm-*-eabi for RUNTESTFLAGS=dg-torture.exp=pr113026-1.c
with your patch I have now 7 PASS + 7 XPASS + 1 UNSUPPORTED
while I had 14 PASS + 1 UNSUPPORTED without your patch.

Thanks,

Christophe

>
> 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
>
>

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