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-toolchain@lists.linaro.org mailing list, Libera's #linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the usual project channel.

In CI config tcwg_bmk-code_size-spec2k6/llvm-arm-master-O3 after:

  | commit llvmorg-18-init-6129-ga292e7edf8b2
  | Author: Zahira Ammarguellat <zahira.ammarguellat@intel.com>
  | Date:   Tue Sep 19 06:13:02 2023 -0700
  | 
  |     Fix math-errno issue (#66381)
  |     
  |     Update handling of math errno. This change updates the logic for
  |     generation of math intrinics in place of math library function calls.
  |     The previous logic https://reviews.llvm.org/D151834 was incorrectly
  |     using intrinsics when math errno handling was needed at optimization
  |     levels above -O0.
  | ... 3 lines of the commit log omitted.

the following benchmarks grew in size by more than 1%:
- 470.lbm grew in size by 2% from 11169 to 11408 bytes

Below reproducer instructions can be used to re-build both "first_bad" and "last_good" cross-toolchains used in this bisection.  Naturally, the scripts will fail when triggerring benchmarking jobs if you don\'t have access to Linaro TCWG CI.

Configuration:
- Benchmark: 
- Toolchain: Clang + Glibc + LLVM Linker
- Version: all components were built from their tip of trunk
- Target: arm-linux-gnueabihf
- Compiler flags: O3
- Hardware: <unknown>

This benchmarking CI is work-in-progress, and we welcome feedback and suggestions at linaro-toolchain@lists.linaro.org .  In our improvement plans is to add support for SPEC CPU2017 benchmarks and provide "perf report/annotate" data behind these reports.

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

Current build   : https://ci.linaro.org/job/tcwg_bmk-code_size-spec2k6--llvm-arm-master-O3-build/66/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bmk-code_size-spec2k6--llvm-arm-master-O3-build/65/artifact/artifacts

Reproduce last good and first bad builds: https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/llvm/sha1/a292e7edf8b2fc51d3e86a96ff5dff45d16bd264/tcwg_bmk-code_size-spec2k6/llvm-arm-master-O3/reproduction_instructions.txt

Full commit : https://github.com/llvm/llvm-project/commit/a292e7edf8b2fc51d3e86a96ff5dff45d16bd264

Latest bug report status : https://linaro.atlassian.net/browse/LLVM-929

List of configurations that regressed due to this commit :
* tcwg_bmk-code_size-spec2k6
** llvm-arm-master-O3
*** 470.lbm grew in size by 2%
*** https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/llvm/sha1/a292e7edf8b2fc51d3e86a96ff5dff45d16bd264/tcwg_bmk-code_size-spec2k6/llvm-arm-master-O3/details.txt
*** https://ci.linaro.org/job/tcwg_bmk-code_size-spec2k6--llvm-arm-master-O3-build/66/