Successfully identified regression in *llvm* in CI configuration
tcwg_bmk_llvm_tx1/llvm-master-aarch64-spec2k6-O3_LTO. So far, this commit has
regressed CI configurations:
- tcwg_bmk_llvm_tx1/llvm-master-aarch64-spec2k6-O3_LTO
Culprit:
<cut>
commit a41f076ef1d611fcd255514d0c19cb06375e49b2
Author: Fangrui Song <i...@maskray.me>
Date: Mon Apr 26 16:04:22 2021 -0700
[test] Fix tools/gold/X86/weak.ll after D94202
The order regressed after D94202: after `a b`, when adding `a c`, we may
reorder
`a` to the right of `b`, causing the final order to be `b a c`.
</cut>
Results regressed to (for first_bad == a41f076ef1d611fcd255514d0c19cb06375e49b2)
# 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 -O3_LTO --
artifacts/build-a41f076ef1d611fcd255514d0c19cb06375e49b2/results_id:
1
# 447.dealII,dealII_base.default regressed by 107
from (for last_good == 262a72f50f1887591558ce0f521a5f7d3a17e2c2)
# 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 -O3_LTO --
artifacts/build-262a72f50f1887591558ce0f521a5f7d3a17e2c2/results_id:
1
Artifacts of last_good build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O3_LTO/21/artifact/artifacts/build-262a72f50f1887591558ce0f521a5f7d3a17e2c2/
Results ID of last_good:
tx1_64/tcwg_bmk_llvm_tx1/bisect-llvm-master-aarch64-spec2k6-O3_LTO/2269
Artifacts of first_bad build:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O3_LTO/21/artifact/artifacts/build-a41f076ef1d611fcd255514d0c19cb06375e49b2/
Results ID of first_bad:
tx1_64/tcwg_bmk_llvm_tx1/bisect-llvm-master-aarch64-spec2k6-O3_LTO/2253
Build top page/logs:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O3_LTO/21/
Configuration details:
Reproduce builds:
<cut>
mkdir investigate-llvm-a41f076ef1d611fcd255514d0c19cb06375e49b2
cd investigate-llvm-a41f076ef1d611fcd255514d0c19cb06375e49b2
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_tx1-llvm-master-aarch64-spec2k6-O3_LTO/21/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-O3_LTO/21/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-O3_LTO/21/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 a41f076ef1d611fcd255514d0c19cb06375e49b2
../artifacts/test.sh
# Reproduce last_good build
git checkout --detach 262a72f50f1887591558ce0f521a5f7d3a17e2c2
../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_tx1/llvm-master-aarch64-spec2k6-O3_LTO
Artifacts:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O3_LTO/21/artifact/artifacts/
Build log:
https://ci.linaro.org/job/tcwg_bmk_ci_llvm-bisect-tcwg_bmk_tx1-llvm-master-aarch64-spec2k6-O3_LTO/21/consoleText
Full commit (up to 1000 lines):
<cut>
commit a41f076ef1d611fcd255514d0c19cb06375e49b2
Author: Fangrui Song <i...@maskray.me>
Date: Mon Apr 26 16:04:22 2021 -0700
[test] Fix tools/gold/X86/weak.ll after D94202
The order regressed after D94202: after `a b`, when adding `a c`, we may
reorder
`a` to the right of `b`, causing the final order to be `b a c`.
---
llvm/test/tools/gold/X86/Inputs/weak.ll | 1 +
llvm/test/tools/gold/X86/weak.ll | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/llvm/test/tools/gold/X86/Inputs/weak.ll
b/llvm/test/tools/gold/X86/Inputs/weak.ll
index 5209d343f23f..8aba5b261001 100644
--- a/llvm/test/tools/gold/X86/Inputs/weak.ll
+++ b/llvm/test/tools/gold/X86/Inputs/weak.ll
@@ -1,3 +1,4 @@
+target triple = "x86_64-unknown-linux-gnu"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
@a = weak global i32 41
diff --git a/llvm/test/tools/gold/X86/weak.ll b/llvm/test/tools/gold/X86/weak.ll
index 384a0ab3ae8c..340de107b43b 100644
--- a/llvm/test/tools/gold/X86/weak.ll
+++ b/llvm/test/tools/gold/X86/weak.ll
@@ -6,6 +6,7 @@
; RUN: -shared %t.o %t2.o -o %t3.o
; RUN: llvm-dis %t3.o -o - | FileCheck %s
+target triple = "x86_64-unknown-linux-gnu"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
@a = weak global i32 42
@@ -13,6 +14,6 @@ target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
; Test that @b and @c end up pointing to the same variable.
-; CHECK: @a = weak global i32 42
; CHECK: @b = global i32* @a{{$}}
+; CHECK: @a = weak global i32 42
; CHECK: @c = global i32* @a{{$}}
</cut>
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