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+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.
+
+We appreciate 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/LLVM-1070 , please let us know if you are looking at the problem and/or when you have a fix.
+
+In CI config tcwg_bmk-code_speed-spec2k6/llvm-arm-master-O3 after:
+
+ | commit llvmorg-18-init-15417-gb03f0c596a18
+ | Author: Craig Topper <craig.topper@sifive.com>
+ | Date: Wed Dec 20 09:52:02 2023 -0800
+ |
+ | [RISCV] Add sifive-p450 CPU. (#75760)
+ |
+ | This is an out of order core with no vector unit. More information:
+ | https://www.sifive.com/cores/performance-p450-470
+ |
+ | Scheduler model and other tuning will come in separate patches.
+
+the following hot functions slowed down by more than 15% (but their benchmarks slowed down by less than 3%):
+- slowed down by 100% - 444.namd:[.] __vfscanf_internal - from 1 to 2 perf samples
+
+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:
+- Toolchain: Clang + Glibc + LLVM Linker
+- Version: all components were built from their tip of trunk
+- Target: arm-linux-gnueabihf
+- Compiler flags: O3
+- 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.
+
+-----------------8<--------------------------8<--------------------------8<--------------------------
+The information below can be used to reproduce a debug environment:
+
+Current build : https://ci.linaro.org/job/tcwg_bmk-code_speed-spec2k6--llvm-arm-master-O3-build/134/artifact/artifacts
+Reference build : https://ci.linaro.org/job/tcwg_bmk-code_speed-spec2k6--llvm-arm-master-O3-build/133/artifact/artifacts
+
+Reproduce last good and first bad builds: https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/llvm/sha1/b03f0c596a180399f7730ed75d78055c81b3d771/tcwg_bmk-code_speed-spec2k6/llvm-arm-master-O3/reproduction_instructions.txt
+
+Full commit : https://github.com/llvm/llvm-project/commit/b03f0c596a180399f7730ed75d78055c81b3d771
+
+List of configurations that regressed due to this commit :
+* tcwg_bmk-code_speed-spec2k6
+** llvm-arm-master-O3
+*** slowed down by 100% - 444.namd:[.] __vfscanf_internal
+*** https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/llvm/sha1/b03f0c596a180399f7730ed75d78055c81b3d771/tcwg_bmk-code_speed-spec2k6/llvm-arm-master-O3/details.txt
+*** https://ci.linaro.org/job/tcwg_bmk-code_speed-spec2k6--llvm-arm-master-O3-build/134/artifact/artifacts
+