[Linaro-TCWG-CI] gcc-17-1367-g9ab08d664545: 8 regressions on arm

Dear contributor,

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

In  arm-eabi v7-a softfp, after:
  | commit gcc-17-1367-g9ab08d664545
  | Author: Jakub Jelinek <[email protected]>
  | Date:   Fri Jun 5 10:39:55 2026 +0200
  | 
  |     c, c++, bitintlower: Add __builtin_{bswap,bitreverse}g type-generic builtins [PR122731]
  |     
  |     Clang has added recently type-generic versions of __builtin_bswap{16,32,64}
  |     and __builtin_bitreverse{8,16,32,64} builtins.
  |     
  | ... 75 lines of the commit log omitted.

Produces 8 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/dg.exp ...
  | FAIL: c-c++-common/builtin-bitreverseg-1.c -std=gnu++11 execution test
  | FAIL: c-c++-common/builtin-bitreverseg-1.c -std=gnu++20 execution test
  | FAIL: c-c++-common/builtin-bitreverseg-1.c -std=gnu++26 execution test
  | FAIL: c-c++-common/builtin-bswapg-1.c -std=gnu++11 execution test
  | ... and 5 more

Used configuration :
 *CI config* tcwg_gnu_embed_check_gcc arm-eabi -marm -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=softfp
 *configure and test flags:* --target arm-eabi --disable-multilib --with-mode=arm --with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=softfp --target_board=-marm/-march=armv7-a/-mfpu=vfpv3-d16/-mfloat-abi=softfp qemu_cpu=cortex-a9

We track this bug report under https://linaro.atlassian.net/browse/GNU-1975. (Require Linaro login) Please let us know if you have a fix.

If you have any questions regarding this report, please ask on [email protected] 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
 * http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10124/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-arm_v7a_softfp_eabi-build/builds/10124/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-arm_v7a_softfp_eabi-build/builds/10124/archive/artifacts/sumfiles/xfails.xfail

Current build   : http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10124/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gnu_embed_check_gcc--master-arm_v7a_softfp_eabi-build/builds/10123/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/9ab08d664545bcea9164040e806385369fdaaf0e/tcwg_gnu_embed_check_gcc/master-arm_v7a_softfp_eabi/reproduction_instructions.txt

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