Dear contributor,

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

In bootstrap_check master-arm-check_bootstrap_lto, after:
  | commit gcc-16-2197-g385d9937f0e2
  | Author: Jan Hubicka <hubicka@ucw.cz>
  | Date:   Fri Jul 11 13:01:13 2025 +0200
  | 
  |     Rewrite assign_discriminators
  |     
  |     To assign debug locations to corresponding statements auto-fdo uses
  |     discriminators.  Documentation says that if given statement belongs to multiple
  |     basic blocks, the discrminator distinguishes them.
  | ... 78 lines of the commit log omitted.

Produces 29 regressions:
  | 
  | regressions.sum:
  | Running g++:g++.dg/torture/dg-torture.exp ...
  | FAIL: c-c++-common/torture/pr116156-1.c -O1  (test for excess errors)
  | FAIL: c-c++-common/torture/pr116156-1.c -O2  (test for excess errors)
  | FAIL: c-c++-common/torture/pr116156-1.c -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
  | FAIL: c-c++-common/torture/pr116156-1.c -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
  | ... and 27 more

Used configuration :
 *CI config* tcwg_bootstrap_check master-arm-check_bootstrap_lto
 *configure and test flags:* none, autodetected on armv8l-unknown-linux-gnueabihf

We track this bug report under https://linaro.atlassian.net/browse/GNU-1630. 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
 * https://ci.linaro.org/job/tcwg_bootstrap_check--master-arm-check_bootstrap_lto-build/1285/artifact/artifacts/00-sumfiles/
The full lists of regressions and improvements as well as configure and make commands are in
 * https://ci.linaro.org/job/tcwg_bootstrap_check--master-arm-check_bootstrap_lto-build/1285/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * https://ci.linaro.org/job/tcwg_bootstrap_check--master-arm-check_bootstrap_lto-build/1285/artifact/artifacts/sumfiles/xfails.xfail

Current build   : https://ci.linaro.org/job/tcwg_bootstrap_check--master-arm-check_bootstrap_lto-build/1285/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bootstrap_check--master-arm-check_bootstrap_lto-build/1284/artifact/artifacts

Instruction to reproduce the build : https://gitlab.com/LinaroLtd/tcwg/ci/interesting-commits/-/raw/master/gcc/sha1/385d9937f0e23cbf9c62f0b2553a33ff70e56ecf/tcwg_bootstrap_check/master-arm-check_bootstrap_lto/reproduction_instructions.txt

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