Dear contributor,

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

In  armv8l-unknown-linux-gnueabihf native, after:
  | commit gcc-17-5195-g195bc16864c5
  | Author: Richard Biener <rguenther@suse.de>
  | Date:   Wed Oct 14 07:46:17 2026 +0200
  | 
  |     tree-optimization/127876 - wrong code with conditional float reduction
  |     
  |     When vectorizing a reduction r = <cond> ? r : CST we reduce a
  |     vector mixed with the initial constant value and the constant
  |     and perform a final MAX or MIN reduction dependent on the
  | ... 11 lines of the commit log omitted.

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.dg/vect/vect.exp ...
  | FAIL: gcc.dg/vect/vect-pr127876-1.c (test for excess errors)
  | FAIL: gcc.dg/vect/vect-pr127876-1.c -flto -ffat-lto-objects (test for excess errors)

Used configuration :
 *CI config* tcwg_gcc_check armv8l-unknown-linux-gnueabihf
 *configure and test flags:* none, autodetected on armv8l-unknown-linux-gnueabihf--disable-multilib --with-float=hard --with-mode=thumb --with-tune=cortex-a9 --with-arch=armv7-a --with-fpu=neon-fp-armv8

We track this bug report under https://linaro.atlassian.net/browse/GNU-2073. (Require Linaro login) 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
 * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10784/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_gcc_check--master-arm-build/builds/10784/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10784/archive/artifacts/sumfiles/xfails.xfail

Current build   : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10784/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10783/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/195bc16864c5f75a03e631049f22a3fd0d1d7367/tcwg_gcc_check/master-arm/reproduction_instructions.txt

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