Successfully identified regression in *gcc* in CI configuration
tcwg_bmk_llvm_apm/llvm-master-aarch64-spec2k6-Oz. So far, this commit has
regressed CI configurations:
- tcwg_bmk_llvm_apm/llvm-master-aarch64-spec2k6-Oz
Culprit:
<cut>
commit fd26ce83981c6b50519805500272ab26b4e4c4b0
Author: Jeff Law <jlaw@localhost.localdomain>
Date: Sun Aug 8 11:20:41 2021 -0400
Fix c6x test compromised by recent improvements to bswap & rotates
gcc/testsuite
* gcc.target/tic6x/rotdi16-scan.c: Pull rotate into its own
function.
</cut>
Results regressed to (for first_bad == fd26ce83981c6b50519805500272ab26b4e4c4b0)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1 -- --set gcc_override_configure=--disable-libsanitizer:
-8
# build_abe linux:
-7
# build_abe glibc:
-6
# build_abe stage2 -- --set gcc_override_configure=--disable-libsanitizer:
-5
# build_llvm true:
-3
# true:
0
# benchmark -- -Oz
artifacts/build-fd26ce83981c6b50519805500272ab26b4e4c4b0/results_id:
1
# 482.sphinx3,[.] OUTLINED_FUNCTION_4 regressed by 117
from (for last_good == e9b639c4b532212ca92b2261f820768993770daa)
# reset_artifacts:
-10
# build_abe binutils:
-9
# build_abe stage1 -- --set gcc_override_configure=--disable-libsanitizer:
-8
# build_abe linux:
-7
# build_abe glibc:
-6
# build_abe stage2 -- --set gcc_override_configure=--disable-libsanitizer:
-5
# build_llvm true:
-3
# true:
0
# benchmark -- -Oz
artifacts/build-e9b639c4b532212ca92b2261f820768993770daa/results_id:
1
Artifacts of last_good build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/artifact/artifacts/build-e9b639c4b532212ca92b2261f820768993770daa/
Results ID of last_good:
apm_64/tcwg_bmk_llvm_apm/bisect-llvm-master-aarch64-spec2k6-Oz/3651
Artifacts of first_bad build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/artifact/artifacts/build-fd26ce83981c6b50519805500272ab26b4e4c4b0/
Results ID of first_bad:
apm_64/tcwg_bmk_llvm_apm/bisect-llvm-master-aarch64-spec2k6-Oz/3643
Build top page/logs:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/
Configuration details:
Reproduce builds:
<cut>
mkdir investigate-gcc-fd26ce83981c6b50519805500272ab26b4e4c4b0
cd investigate-gcc-fd26ce83981c6b50519805500272ab26b4e4c4b0
git clone https://git.linaro.org/toolchain/jenkins-scripts
mkdir -p artifacts/manifests
curl -o artifacts/manifests/build-baseline.sh
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/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_apm-llvm-master-aarch64-spec2k6-Oz/5/artifact/artifacts/manifests/build-parameters.sh
--fail
curl -o artifacts/test.sh
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/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 /gcc/ ./ ./bisect/baseline/
cd gcc
# Reproduce first_bad build
git checkout --detach fd26ce83981c6b50519805500272ab26b4e4c4b0
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach e9b639c4b532212ca92b2261f820768993770daa
../artifacts/test.sh
cd ..
</cut>
History of pending regressions and results:
https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/ci/tcwg_bmk_llvm_apm/llvm-master-aarch64-spec2k6-Oz
Artifacts:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/artifact/artifacts/
Build log:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_apm-llvm-master-aarch64-spec2k6-Oz/5/consoleText
Full commit (up to 1000 lines):
<cut>
commit fd26ce83981c6b50519805500272ab26b4e4c4b0
Author: Jeff Law <jlaw@localhost.localdomain>
Date: Sun Aug 8 11:20:41 2021 -0400
Fix c6x test compromised by recent improvements to bswap & rotates
gcc/testsuite
* gcc.target/tic6x/rotdi16-scan.c: Pull rotate into its own
function.
---
gcc/testsuite/gcc.target/tic6x/rotdi16-scan.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/gcc/testsuite/gcc.target/tic6x/rotdi16-scan.c
b/gcc/testsuite/gcc.target/tic6x/rotdi16-scan.c
index 4d7816c1537..550418324e6 100644
--- a/gcc/testsuite/gcc.target/tic6x/rotdi16-scan.c
+++ b/gcc/testsuite/gcc.target/tic6x/rotdi16-scan.c
@@ -7,10 +7,14 @@
unsigned long long z = 0x012389ab4567cdefull;
+unsigned long long __attribute__ ((noinline,noclone,noipa)) bar ()
+{
+ return (z << 48) | (z >> 16);
+}
+
int main ()
{
- unsigned long long z2 = (z << 48) | (z >> 16);
- if (z2 != 0xcdef012389ab4567ull)
+ if (bar() != 0xcdef012389ab4567ull)
abort ();
exit (0);
}
</cut>
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