After llvm commit bd4c6a476fd037fb07a1c484f75d93ee40713d3d
Author: David Blaikie <dblai...@gmail.com>
Add missing header
the following benchmarks slowed down by more than 2%:
- 433.milc slowed down by 4% from 12427 to 12916 perf samples
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.
For your convenience, we have uploaded tarballs with pre-processed source and
assembly files at:
- First_bad save-temps:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/build-bd4c6a476fd037fb07a1c484f75d93ee40713d3d/save-temps/
- Last_good save-temps:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/build-7d4da4e1ab7f79e51db0d5c2a0f5ef1711122dd7/save-temps/
- Baseline save-temps:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/build-baseline/save-temps/
Configuration:
- Benchmark: SPEC CPU2006
- Toolchain: Clang + Glibc + LLVM Linker
- Version: all components were built from their tip of trunk
- Target: aarch64-linux-gnu
- Compiler flags: -O2 -flto
- Hardware: NVidia TX1 4x Cortex-A57
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.
THIS IS THE END OF INTERESTING STUFF. BELOW ARE LINKS TO BUILDS, REPRODUCTION
INSTRUCTIONS, AND THE RAW COMMIT.
This commit has regressed these CI configurations:
- tcwg_bmk_llvm_tx1/llvm-master-aarch64-spec2k6-O2_LTO
First_bad build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/build-bd4c6a476fd037fb07a1c484f75d93ee40713d3d/
Last_good build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/build-7d4da4e1ab7f79e51db0d5c2a0f5ef1711122dd7/
Baseline build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/build-baseline/
Even more details:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/
Reproduce builds:
<cut>
mkdir investigate-llvm-bd4c6a476fd037fb07a1c484f75d93ee40713d3d
cd investigate-llvm-bd4c6a476fd037fb07a1c484f75d93ee40713d3d
# Fetch scripts
git clone https://git.linaro.org/toolchain/jenkins-scripts
# Fetch manifests and test.sh script
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/manifests/build-baseline.sh
--fail
curl -o artifacts/manifests/build-parameters.sh
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/manifests/build-parameters.sh
--fail
curl -o artifacts/test.sh
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O2_LTO/34/artifact/artifacts/test.sh
--fail
chmod +x artifacts/test.sh
# Reproduce the baseline build (build all pre-requisites)
./jenkins-scripts/tcwg_bmk-build.sh @@ artifacts/manifests/build-baseline.sh
# Save baseline build state (which is then restored in artifacts/test.sh)
mkdir -p ./bisect
rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/
--exclude /llvm/ ./ ./bisect/baseline/
cd llvm
# Reproduce first_bad build
git checkout --detach bd4c6a476fd037fb07a1c484f75d93ee40713d3d
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach 7d4da4e1ab7f79e51db0d5c2a0f5ef1711122dd7
../artifacts/test.sh
cd ..
</cut>
Full commit (up to 1000 lines):
<cut>
commit bd4c6a476fd037fb07a1c484f75d93ee40713d3d
Author: David Blaikie <dblai...@gmail.com>
Date: Mon Nov 29 16:29:25 2021 -0800
Add missing header
---
llvm/lib/Demangle/DLangDemangle.cpp | 1 +
1 file changed, 1 insertion(+)
diff --git a/llvm/lib/Demangle/DLangDemangle.cpp
b/llvm/lib/Demangle/DLangDemangle.cpp
index faf91b239490..f380aa90035e 100644
--- a/llvm/lib/Demangle/DLangDemangle.cpp
+++ b/llvm/lib/Demangle/DLangDemangle.cpp
@@ -17,6 +17,7 @@
#include "llvm/Demangle/StringView.h"
#include "llvm/Demangle/Utility.h"
+#include <cctype>
#include <cstring>
#include <limits>
</cut>
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