Regression

LLVM.CodeGen/ARM.special-reg-v8m-main.ll (from LLVM)

Failing for the past 1 build (Since Failed#7066 )
Took 1.4 sec.

Stacktrace

Script:
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: 'RUN: at line 1';   not --crash /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/ARM/special-reg-v8m-main.ll -mtriple=thumbv8m.base-none-eabi 2>&1 | /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/ARM/special-reg-v8m-main.ll --check-prefix=BASELINE
: '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/ARM/special-reg-v8m-main.ll -mtriple=thumbv8m.main-none-eabi -mattr=+dsp 2>&1 | /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/ARM/special-reg-v8m-main.ll --check-prefix=MAINLINE
--
Exit Code: 1

Command Output (stderr):
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/Users/buildslave/jenkins/workspace/clang-stage2-cmake-RgSan/llvm-project/llvm/test/CodeGen/ARM/special-reg-v8m-main.ll:8:20: error: MAINLINE-LABEL: expected string not found in input
 ; MAINLINE-LABEL: read_mclass_registers:
                   ^
<stdin>:1:1: note: scanning from here
/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
^
<stdin>:7:54: note: possible intended match here
2. Running pass 'ReachingDefAnalysis' on function '@write_mclass_registers'
                                                     ^

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