[Linaro-TCWG-CI] gcc-17-3152-gbc8c49094cdf: 3 regressions on arm

[ci_notify@linaro.org]

Dear contributor,

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

In  arm-linux-gnueabihf cross, after:
  | commit gcc-17-3152-gbc8c49094cdf
  | Author: Kyrylo Tkachov <ktkachov@nvidia.com>
  | Date:   Wed Jul 29 21:27:05 2026 +0200
  | 
  |     match.pd: extend the MIN/MAX narrowing through a cast to vectors
  |     
  |     The rule folding (type) minmax ((wide_type) a, (wide_type) b) to
  |     minmax (a, b) is restricted to scalars.  Extension is monotone, so it
  |     commutes with the comparison and the outer truncation is exact, and the
  | ... 44 lines of the commit log omitted.

Produces 3 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/dg.exp ...
  | FAIL: g++.dg/tree-ssa/vec-narrow-minmax-2.C -std=gnu++20  scan-tree-dump-times optimized "MIN_EXPR" 1
  | FAIL: g++.dg/tree-ssa/vec-narrow-minmax-2.C -std=gnu++29  scan-tree-dump-times optimized "MIN_EXPR" 1
  | FAIL: g++.dg/tree-ssa/vec-narrow-minmax-2.C -std=gnu++98  scan-tree-dump-times optimized "MIN_EXPR" 1

Used configuration :
 *CI config* tcwg_gnu_cross_check_gcc arm-linux-gnueabihf cross
 *configure and test flags:* --target arm-linux-gnueabihf --disable-multilib --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb --with-tune=cortex-a9 --with-arch=armv7-a

We track this bug report under https://linaro.atlassian.net/browse/GNU-1992. (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_gnu_cross_check_gcc--master-arm-build/builds/10291/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_cross_check_gcc--master-arm-build/builds/10291/archive/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10291/archive/artifacts/sumfiles/xfails.xfail

Current build   : http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10291/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gnu_cross_check_gcc--master-arm-build/builds/10290/archive/artifacts/

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/bc8c49094cdfbb8911d1bdb6fc421c6f56e6422c/tcwg_gnu_cross_check_gcc/master-arm/reproduction_instructions.txt

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