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_speed-cpu2017rate/llvm-arm-master-O3_LTO after:

  | 213 commits in llvm
  | f827b953ab32 [mailmap] Add entry for myself
  | 8628ca29aa47 [libc] Fix UB in memory utils (#74295)
  | 077fe9773632 [llvm-exegesis] Disable core dumps in subprocess (#74144)
  | 9db642394dee [clang][AMDGPU] fix the return type for ballot (#73906)
  | c1140d49ec33 [AArch64] Stack probing for dynamic allocas in GlobalISel (#67123)
  | ... and 208 more commits in llvm

No change

The configuration of this build is:
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: SPEC CPU2017
- Toolchain: Clang + Glibc + LLVM Linker
- Version: all components were built from their tip of trunk
- Target: arm-linux-gnueabihf
- Compiler flags: O3 -LTO
- Hardware: NVidia TK1 4x Cortex-A15

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.

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

Current build   : https://ci.linaro.org/job/tcwg_bmk-code_speed-cpu2017rate--llvm-arm-master-O3_LTO-build/98/artifact/artifacts
Reference build : https://ci.linaro.org/job/tcwg_bmk-code_speed-cpu2017rate--llvm-arm-master-O3_LTO-build/97/artifact/artifacts