[llvm-bugs] [Bug 28883] New: IfConversion crash

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28883

            Bug ID: 28883
           Summary: IfConversion crash
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Miscellaneous Instrumentation passes
          Assignee: unassignedbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/2045/steps/build%20stage%202/logs/stdio


880/3117] Building CXX object
lib/Analysis/CMakeFiles/LLVMAnalysis.dir/AliasAnalysisEvaluator.cpp.o
FAILED:
/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1.install/bin/clang++
  -DHAVE_RPC_XDR_H=1 -DHAVE_TIRPC_RPC_XDR_H=0 -D_DEBUG -D_GNU_SOURCE
-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
-Iprojects/compiler-rt/lib/sanitizer_common
-I/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/projects/compiler-rt/lib/sanitizer_common
-Iinclude
-I/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/include
-fPIC -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter
-Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic
-Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
-Wdelete-non-virtual-dtor -Werror=date-time -std=c++11 -fcolor-diagnostics
-ffunction-sections -fdata-sections -Wall -std=c++11 -Wno-unused-parameter -O3 
  -UNDEBUG   -fPIC -fvisibility-inlines-hidden -Wall -W -Wno-unused-parameter
-Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic
-Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor
-Wdelete-non-virtual-dtor -Werror=date-time -std=c++11 -fcolor-diagnostics
-ffunction-sections -fdata-sections -Wall -std=c++11 -Wno-unused-parameter -m64
-fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables
-fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden
-fvisibility-inlines-hidden -fno-function-sections -fno-lto -O3
-gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions
-Wno-non-virtual-dtor -fno-rtti -Wglobal-constructors -MMD -MT
projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.powerpc64le.dir/sanitizer_common_libcdep.cc.o
-MF
projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.powerpc64le.dir/sanitizer_common_libcdep.cc.o.d
-o
projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommonLibc.powerpc64le.dir/sanitizer_common_libcdep.cc.o
-c
/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_common_libcdep.cc
Unable to predicate %X0<def> = MFLR8 %LR8<imp-use>
!
UNREACHABLE executed at
/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/llvm/lib/CodeGen/IfConversion.cpp:2030!
#0 0x00003fff903693b4 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1.install/bin/../lib/libLLVMSupport.so+0x1093b4)
#1 0x00003fff903698b0 PrintStackTraceSignalHandler(void*)
(/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1.install/bin/../lib/libLLVMSupport.so+0x1098b0)
#2 0x00003fff90366bec llvm::sys::RunSignalHandlers()
(/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1.install/bin/../lib/libLLVMSupport.so+0x106bec)
#3 0x00003fff90366e08 SignalHandler(int)
(/home/buildbots/ppc64le-clang-multistage-test/clang-ppc64le-multistage/stage1.install/bin/../lib/libLLVMSupport.so+0x106e08)
#4 0x00003fff93c404d8  0x4d8 gsignal
#5 0x00003fff93c404d8

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