Regression

LLVM.CodeGen/X86.2009-02-12-DebugInfoVLA.ll (from LLVM)

Failing for the past 1 build (Since Failed#7066 )
Took 0.39 sec.

Stacktrace

Script:
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: 'RUN: at line 1';   /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/X86/2009-02-12-DebugInfoVLA.ll -mtriple=i386-apple-darwin9
: '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/X86/2009-02-12-DebugInfoVLA.ll -mtriple=x86_64-apple-darwin9 -stack-symbol-ordering=0 -verify-machineinstrs | /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/X86/2009-02-12-DebugInfoVLA.ll
--
Exit Code: 134

Command Output (stderr):
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warning: ignoring debug info with an invalid version (0) in <stdin>
/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=i386-apple-darwin9 
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'ReachingDefAnalysis' on function '@foo'
/Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/test/CodeGen/X86/Output/2009-02-12-DebugInfoVLA.ll.script: line 2: 53645 Abort trap: 6           /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -mtriple=i386-apple-darwin9 < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/X86/2009-02-12-DebugInfoVLA.ll

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