Bugzilla Link	44763
Resolution	DUPLICATE
Resolved on	Feb 25, 2020 06:54
Version	10.0
OS	All
Blocks	#43900
CC	@zmodem

Extended Description

During test runs of 10.0.0 rc1, I could not compile the test-suite at all, as the 10.0.0 rc1 clang executable consistently crashes on all of the Bitcode source:

$ gmake
Scanning dependencies of target timeit-target
[ 0%] Building C object tools/CMakeFiles/timeit-target.dir/timeit.c.o
[ 0%] Linking C executable timeit-target
[ 0%] Built target timeit-target
Scanning dependencies of target fpcmp-target
[ 0%] Building C object tools/CMakeFiles/fpcmp-target.dir/fpcmp.c.o
[ 0%] Linking C executable fpcmp-target
[ 0%] Built target fpcmp-target
Scanning dependencies of target build-timeit
[ 0%] [TEST_SUITE_HOST_CC] Compiling host source timeit.c
[ 0%] [TEST_SUITE_HOST_CC] Linking host executable timeit
[ 0%] Built target build-timeit
Scanning dependencies of target build-HashProgramOutput.sh
[ 0%] Generating HashProgramOutput.sh
[ 0%] Built target build-HashProgramOutput.sh
Scanning dependencies of target build-fpcmp
[ 0%] [TEST_SUITE_HOST_CC] Compiling host source fpcmp.c
[ 0%] [TEST_SUITE_HOST_CC] Linking host executable fpcmp
[ 0%] Built target build-fpcmp
Scanning dependencies of target halide_local_laplacian
[ 0%] Building CXX object Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/driver.cpp.o
[ 0%] Building CXX object Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir//common/x86_halide_runtime.bc.o
Stack dump:
0. Program arguments: /home/dim/llvm/10.0.0/dist/clang+llvm-10.0.0-rc1-amd64-unknown-freebsd11/bin/clang++ -cc1 -triple x86_64-unknown-freebsd11.3 -emit-obj -disable-free -disable-llvm-verifier -discard-value-names -main-file-name x86_halide_runtime.bc -mrelocation-model static -mthread-model posix -mframe-pointer=all -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -fno-use-init-array -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /home/dim/llvm/10.0.0/dist/clang+llvm-10.0.0-rc1-amd64-unknown-freebsd11/lib/clang/10.0.0 -O3 -Werror=date-time -w -std=c++11 -fdebug-compilation-dir /home/dim/llvm/10.0.0/build/Bitcode/Benchmarks/Halide/local_laplacian -ferror-limit 19 -fmessage-length 200 -fgnuc-version=4.2.1 -fobjc-runtime=gnustep -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -o CMakeFiles/halide_local_laplacian.dir//common/x86_halide_runtime.bc.o -x ir /home/dim/llvm/10.0.0/llvm-test-suite/Bitcode/Benchmarks/Halide/common/x86_halide_runtime.bc

1. Per-module optimization passes
2. Running pass 'Function Pass Manager' on module '/home/dim/llvm/10.0.0/llvm-test-suite/Bitcode/Benchmarks/Halide/common/x86_halide_runtime.bc'.
3. Running pass 'Function Alias Analysis Results' on function '@halide_set_custom_malloc'
   #​0 0x0000000003454b78 llvm::sys::PrintStackTrace(llvm::raw_ostream&) (+0x3454b78)
   #​1 0x0000000003452bc8 llvm::sys::RunSignalHandlers() (clang++: error: unable to execute command: Segmentation fault (core dumped)
   clang++: error: clang frontend command failed due to signal (use -v to see invocation)
   clang version 10.0.0 (dim@tensor.andric.com:git/home-dim.git 7fbc6358ad2b7eb9bac5260ed8e4e206929b7e7b)
   Target: x86_64-unknown-freebsd11.3
   Thread model: posix
   InstalledDir: /home/dim/llvm/10.0.0/dist/clang+llvm-10.0.0-rc1-amd64-unknown-freebsd11/bin
   clang++: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script.
   clang++: note: diagnostic msg: Error generating preprocessed source(s) - no preprocessable inputs.
   gmake[2]: *** [Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/build.make:87: Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/__/common/x86_halide_runtime.bc.o] Error 254
   gmake[1]: *** [CMakeFiles/Makefile2:2781: Bitcode/Benchmarks/Halide/local_laplacian/CMakeFiles/halide_local_laplacian.dir/all] Error 2
   gmake: *** [Makefile:130: all] Error 2

Gdb backtrace (unforunately no symbols are available in the test-release.sh builds):

Starting program: /home/dim/llvm/10.0.0/dist/clang+llvm-10.0.0-rc1-amd64-unknown-freebsd11/bin/clang++ -cc1 -triple x86_64-unknown-freebsd11.3 -emit-obj -disable-free -disable-llvm-verifier -discard-value-names -main-file-name x86_halide_runtime.bc -mrelocation-model static -mthread-model posix -mframe-pointer=all -fno-rounding-math -masm-verbose -mconstructor-aliases -munwind-tables -fno-use-init-array -target-cpu x86-64 -dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /home/dim/llvm/10.0.0/dist/clang+llvm-10.0.0-rc1-amd64-unknown-freebsd11/lib/clang/10.0.0 -O3 -Werror=date-time -w -std=c++11 -fdebug-compilation-dir /home/dim/llvm/10.0.0/build/Bitcode/Benchmarks/Halide/local_laplacian -ferror-limit 19 -fmessage-length 200 -fgnuc-version=4.2.1 -fobjc-runtime=gnustep -fdiagnostics-show-option -fcolor-diagnostics -vectorize-loops -vectorize-slp -faddrsig -o CMakeFiles/halide_local_laplacian.dir/__/common/x86_halide_runtime.bc.o -x ir /home/dim/llvm/10.0.0/llvm-test-suite/Bitcode/Benchmarks/Halide/common/x86_halide_runtime.bc

Program received signal SIGSEGV, Segmentation fault.
0x000000010000000f in ?? ()
(gdb) bt
#​0 0x000000010000000f in ?? ()
#​1 0x00000000028ca9c0 in llvm::AAResultsWrapperPass::runOnFunction(llvm::Function&) ()
#​2 0x0000000002e8edc0 in llvm::FPPassManager::runOnFunction(llvm::Function&) ()
#​3 0x0000000002e8f1d3 in llvm::FPPassManager::runOnModule(llvm::Module&) ()
#​4 0x0000000002e8f6a9 in llvm::legacy::PassManagerImpl::run(llvm::Module&) ()
#​5 0x00000000035de7dc in clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::HeaderSearchOptions const&, clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction, std::__1::unique_ptr<llvm::raw_pwrite_stream, std::__1::default_deletellvm::raw_pwrite_stream >) ()
#​6 0x0000000003c17e67 in clang::CodeGenAction::ExecuteAction() ()
#​7 0x0000000003b7abca in clang::FrontendAction::Execute() ()
#​8 0x0000000003aea761 in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) ()
#​9 0x0000000003c12905 in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) ()
#​10 0x0000000001cbaf0e in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) ()
#​11 0x0000000001cb8f65 in ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) ()
#​12 0x0000000001cb8cf4 in main ()