Regression

LLVM.CodeGen/Thumb2.2011-12-16-T2SizeReduceAssert.ll (from LLVM)

Failing for the past 1 build (Since Failed#7066 )
Took 0.5 sec.

Stacktrace

Script:
--
: '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/Thumb2/2011-12-16-T2SizeReduceAssert.ll -mtriple=thumbv7-apple-ios -relocation-model=pic -frame-pointer=all -mcpu=cortex-a8
: '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/Thumb2/2011-12-16-T2SizeReduceAssert.ll -mtriple=thumbv8-none-linux-gnueabi
--
Exit Code: 134

Command Output (stderr):
--
/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=thumbv7-apple-ios -relocation-model=pic -frame-pointer=all -mcpu=cortex-a8 
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'ReachingDefAnalysis' on function '@list_AssocListPair'
/Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/test/CodeGen/Thumb2/Output/2011-12-16-T2SizeReduceAssert.ll.script: line 2: 50896 Abort trap: 6           /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/clang-build/bin/llc -mtriple=thumbv7-apple-ios -relocation-model=pic -frame-pointer=all -mcpu=cortex-a8 < /Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/Thumb2/2011-12-16-T2SizeReduceAssert.ll

--