Regression

LLVM.CodeGen/X86.fabs.ll (from LLVM)

Failing for the past 1 build (Since Failed#7066 )
Took 1.9 sec.

Stacktrace

Script:
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: 'RUN: at line 2';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll -mtriple=i686-unknown-unknown -mattr=-sse,-sse2,-sse3                                                | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll --check-prefix=X87
: 'RUN: at line 3';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll -mtriple=i686-unknown-unknown -mattr=-sse,-sse2,-sse3 -enable-unsafe-fp-math -enable-no-nans-fp-math | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll --check-prefix=X87UNSAFE
: 'RUN: at line 4';   /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll -mtriple=x86_64-unknown-unknown                                                                      | /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll --check-prefix=X64
--
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 -mtriple=x86_64-unknown-unknown 
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'ReachingDefAnalysis' on function '@test1'
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/FileCheck /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/fabs.ll --check-prefix=X64

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