Successfully identified regression in *gcc* in CI configuration tcwg_bmk_gnu_tx1/gnu-master-aarch64-spec2k6-O3_LTO. So far, this commit has regressed CI configurations: - tcwg_bmk_gnu_tx1/gnu-master-aarch64-spec2k6-O3_LTO

Culprit: <cut> commit 39ed6a88c74db5412652f0167d03f71eca4f02fc Author: Ian Lance Taylor iant@golang.org Date: Tue May 18 18:28:17 2021 -0700

libgo: use Windows line endings in testwinsignal </cut>

Results regressed to (for first_bad == 39ed6a88c74db5412652f0167d03f71eca4f02fc) # 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 # true: 0 # benchmark -O3_LTO -- artifacts/build-39ed6a88c74db5412652f0167d03f71eca4f02fc/results_id: 1 # 453.povray,povray_base.default regressed by 103

from (for last_good == 01b2864757540d24c4e717a77b40b29369c064b2) # 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 # true: 0 # benchmark -O3_LTO -- artifacts/build-01b2864757540d24c4e717a77b40b29369c064b2/results_id: 1

Artifacts of last_good build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar... Results ID of last_good: tx1_64/tcwg_bmk_gnu_tx1/bisect-gnu-master-aarch64-spec2k6-O3_LTO/1130 Artifacts of first_bad build: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar... Results ID of first_bad: tx1_64/tcwg_bmk_gnu_tx1/bisect-gnu-master-aarch64-spec2k6-O3_LTO/1096 Build top page/logs: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar...

Configuration details:

Reproduce builds: <cut> mkdir investigate-gcc-39ed6a88c74db5412652f0167d03f71eca4f02fc cd investigate-gcc-39ed6a88c74db5412652f0167d03f71eca4f02fc

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_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar... --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar... --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar... --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

cd gcc

# Reproduce first_bad build git checkout --detach 39ed6a88c74db5412652f0167d03f71eca4f02fc ../artifacts/test.sh

# Reproduce last_good build git checkout --detach 01b2864757540d24c4e717a77b40b29369c064b2 ../artifacts/test.sh

cd .. </cut>

History of pending regressions and results: https://git.linaro.org/toolchain/ci/base-artifacts.git/log/?h=linaro-local/c...

Artifacts: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar... Build log: https://ci.linaro.org/job/tcwg_bmk_ci_gnu-bisect-tcwg_bmk_tx1-gnu-master-aar...

Full commit (up to 1000 lines): <cut> commit 39ed6a88c74db5412652f0167d03f71eca4f02fc Author: Ian Lance Taylor iant@golang.org Date: Tue May 18 18:28:17 2021 -0700

libgo: use Windows line endings in testwinsignal --- libgo/go/runtime/testdata/testwinsignal/main.go | 38 ++++++++++++------------- 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/libgo/go/runtime/testdata/testwinsignal/main.go b/libgo/go/runtime/testdata/testwinsignal/main.go index 1e7c9475fd6..d8cd884ffac 100644 --- a/libgo/go/runtime/testdata/testwinsignal/main.go +++ b/libgo/go/runtime/testdata/testwinsignal/main.go @@ -1,19 +1,19 @@ -package main - -import ( - "fmt" - "os" - "os/signal" - "time" -) - -func main() { - c := make(chan os.Signal, 1) - signal.Notify(c) - - fmt.Println("ready") - sig := <-c - - time.Sleep(time.Second) - fmt.Println(sig) -} +package main + +import ( + "fmt" + "os" + "os/signal" + "time" +) + +func main() { + c := make(chan os.Signal, 1) + signal.Notify(c) + + fmt.Println("ready") + sig := <-c + + time.Sleep(time.Second) + fmt.Println(sig) +} </cut>