Dear contributor, our automatic CI has detected problems related to your 
patch(es).  Please find some details below.  If you have any questions, please 
follow up on linaro-toolch...@lists.linaro.org mailing list, Libera's 
#linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the 
usual project channel.

We understand that it might be difficult to find the necessary logs or 
reproduce the issue locally. If you can't get what you need from our CI within 
minutes, let us know and we will be happy to help.

We track this report status in https://linaro.atlassian.net/browse/GNU-1409 , 
please let us know if you are looking at the problem and/or when you have a fix.

In  master-aarch64 after:

  | commit gcc-15-4991-g69bd93c167fe
  | Author: Alexey Merzlyakov <alexey.merzlya...@samsung.com>
  | Date:   Wed Nov 6 14:39:30 2024 -0700
  | 
  |     [PATCH v2] RISC-V: zero_extend(not) -> xor optimization [PR112398]
  |     
  |     This patch adds optimization of the following patterns:
  |     
  |       (zero_extend:M (subreg:N (not:O==M (X:Q==M)))) ->
  | ... 32 lines of the commit log omitted.

FAIL: 1 regressions

regressions.sum:
  |             === glibc tests ===
  | 
  | Running glibc:stdlib ...
  | FAIL: stdlib/tst-stdc_leading_ones 
  | 

The configuration of this build is:
*CI config* tcwg_gnu_native_check_glibc master-aarch64
*configure and test flags:* --target aarch64-linux-gnu

You can find the failure logs in *.log.1.xz files in
 * 
https://ci.linaro.org/job/tcwg_gnu_native_check_glibc--master-aarch64-build/899/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_gnu_native_check_glibc--master-aarch64-build/899/artifact/artifacts/notify/
The list of [ignored] baseline and flaky failures are in
 * 
https://ci.linaro.org/job/tcwg_gnu_native_check_glibc--master-aarch64-build/899/artifact/artifacts/sumfiles/xfails.xfail

The configuration of this build is:
*CI config* tcwg_gnu_native_check_glibc master-aarch64
*configure and test flags:* --target aarch64-linux-gnu

-----------------8<--------------------------8<--------------------------8<--------------------------
The information below can be used to reproduce a debug environment:

Current build   : 
https://ci.linaro.org/job/tcwg_gnu_native_check_glibc--master-aarch64-build/899/artifact/artifacts
Reference build : 
https://ci.linaro.org/job/tcwg_gnu_native_check_glibc--master-aarch64-build/898/artifact/artifacts

Instruction to reproduce the build : 
https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gcc/sha1/69bd93c167fefbdff0cb88614275358b7a2b2941/tcwg_gnu_native_check_glibc/master-aarch64/reproduction_instructions.txt

Full commit : 
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=69bd93c167fefbdff0cb88614275358b7a2b2941

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