Regression

LLVM.CodeGen/X86.atomic-unordered.ll (from LLVM)

Failing for the past 1 build (Since Failed#7066 )
Took 2 sec.

Stacktrace

Script:
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: 'RUN: at line 2';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -O0 < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll -mtriple=x86_64-linux-generic -verify-machineinstrs -mcpu=skylake -x86-experimental-unordered-atomic-isel=0 | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck --check-prefixes=CHECK,CHECK-O0,CHECK-O0-CUR /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll
: 'RUN: at line 3';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -O3 < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll -mtriple=x86_64-linux-generic -verify-machineinstrs -mcpu=skylake  -x86-experimental-unordered-atomic-isel=0 | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck --check-prefixes=CHECK,CHECK-O3,CHECK-O3-CUR /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll
: 'RUN: at line 4';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -O0 < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll -mtriple=x86_64-linux-generic -verify-machineinstrs -mcpu=skylake -x86-experimental-unordered-atomic-isel=1 | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck --check-prefixes=CHECK,CHECK-O0,CHECK-O0-EX /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll
: 'RUN: at line 5';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -O3 < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll -mtriple=x86_64-linux-generic -verify-machineinstrs -mcpu=skylake -x86-experimental-unordered-atomic-isel=1 | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck --check-prefixes=CHECK,CHECK-O3,CHECK-O3-EX /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll
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Exit Code: 2

Command Output (stderr):
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/Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/include/llvm/CodeGen/ReachingDefAnalysis.h:47:43: runtime error: left shift of negative value -1
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/include/llvm/CodeGen/ReachingDefAnalysis.h:47:43 in 
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0.	Program arguments: /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -O3 -mtriple=x86_64-linux-generic -verify-machineinstrs -mcpu=skylake -x86-experimental-unordered-atomic-isel=0 
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'ReachingDefAnalysis' on function '@load_i8'
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck --check-prefixes=CHECK,CHECK-O3,CHECK-O3-CUR /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/atomic-unordered.ll

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