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:
  | gcc patch https://patchwork.sourceware.org/patch/132916
  | Author: Philipp Tomsich <philipp.tomsich@vrull.eu>
  | Date:   Fri Apr 10 15:43:09 2026 +0200
  | 
  |     [GCC17-stage1 PATCH 1/2] tree-optimization/122569 - fix DeBruijn CLZ table validator shift-by-64 UB
  |     
  |     simplify_count_zeroes validates DeBruijn CLZ tables by computing
  |     (1 << (data + 1)) - 1 to simulate the value produced by the OR-cascade
  |     b |= b >> 1; ... b |= b >> 32.  For 64-bit input with data == 63 (the
  | ... 26 lines of the commit log omitted.
  | ... applied on top of baseline commit:
  | 010618b8dcb fortran: Fix ICE in expand_oacc_for with private derived type [PR93554]

Produces 2 regressions:
  | 
  | regressions.sum:
  | Running gcc:gcc.dg/tree-ssa/tree-ssa.exp ...
  | FAIL: gcc.dg/tree-ssa/pr122569-1.c scan-tree-dump forwprop1 "__builtin_ctz|\\.CTZ"
  | FAIL: gcc.dg/tree-ssa/pr122569-2.c scan-tree-dump forwprop1 "__builtin_clz|\\.CLZ"

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

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-precommit/builds/10185/archive/artifacts/artifacts.precommit/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-precommit/builds/10185/archive/artifacts/artifacts.precommit/notify/
The list of [ignored] baseline and flaky failures are in
 * http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-precommit/builds/10185/archive/artifacts/artifacts.precommit/sumfiles/xfails.xfail

Current build   : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-precommit/builds/10185/archive/artifacts/
Reference build : http://54.172.246.49:9090/jobs/tcwg_gcc_check--master-arm-build/builds/10079/archive/artifacts/

Warning: we do not enable maintainer-mode nor automatically update
generated files, which may lead to failures if the patch modifies the
master files.