[llvm-bugs] [Bug 45029] New: Fast Register Allocator ICE when compiling for aarch64-linux-gnu

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45029

            Bug ID: 45029
           Summary: Fast Register Allocator ICE when compiling for
                    aarch64-linux-gnu
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: raul+llvm at tambre.ee
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

Occurs when compiling format.cc from libfmt (https://github.com/fmtlib/fmt) for
aarch64.

Stack dump:
0.      Program arguments: /usr/lib/llvm-11/bin/clang -cc1 -triple
aarch64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-disable-llvm-verifier -discard-value-names -main-file-name format-b51196.cpp
-mrelocation-model static -mthread-model posix -mframe-pointer=non-leaf
-fmath-errno -fdenormal-fp-math=ieee,ieee -fdenormal-fp-math-f32=ieee,ieee
-fno-rounding-math -masm-verbose -mconstructor-aliases -target-cpu generic
-target-feature +neon -target-abi aapcs -fallow-half-arguments-and-returns
-dwarf-column-info -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir
/usr/lib/llvm-11/lib/clang/11.0.0 -internal-isystem
/usr/bin/../lib/gcc-cross/aarch64-linux-gnu/7.4.0/../../../../include/c++/7.4.0
-internal-isystem
/usr/bin/../lib/gcc-cross/aarch64-linux-gnu/7.4.0/../../../../include/aarch64-linux-gnu/c++/7.4.0
-internal-isystem
/usr/bin/../lib/gcc-cross/aarch64-linux-gnu/7.4.0/../../../../include/aarch64-unknown-linux-gnu/c++/7.4.0
-internal-isystem
/usr/bin/../lib/gcc-cross/aarch64-linux-gnu/7.4.0/../../../../include/c++/7.4.0/backward
-internal-isystem /usr/local/include -internal-isystem
/usr/lib/llvm-11/lib/clang/11.0.0/include -internal-externc-isystem
/usr/include/aarch64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -std=c++2a -fdeprecated-macro
-fdebug-compilation-dir /opt/llvm_crash -ferror-limit 19 -fmessage-length 0
-fno-signed-char -fgnuc-version=4.2.1 -fno-implicit-modules -fobjc-runtime=gcc
-fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics
-faddrsig -o /tmp/format-b51196-613afe.o -x c++ format-b51196.cpp
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'format-b51196.cpp'.
4.      Running pass 'Fast Register Allocator' on function
'@_ZN3fmt2v68internal8multiplyEmm'
 #0 0x00007f451db322bf llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0x99d2bf)
 #1 0x00007f451db30580 llvm::sys::RunSignalHandlers()
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0x99b580)
 #2 0x00007f451db32885 (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0x99d885)
 #3 0x00007f451cf88890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
 #4 0x00007f451dec13eb (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xd2c3eb)
 #5 0x00007f451dec0d4a (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xd2bd4a)
 #6 0x00007f451debf0c1 (/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xd2a0c1)
 #7 0x00007f451dddcaf8
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xc47af8)
 #8 0x00007f451dc3d156 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xaa8156)
 #9 0x00007f451dc3d3f3 llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xaa83f3)
#10 0x00007f451dc3d8c0 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/lib/x86_64-linux-gnu/libLLVM-11.so.1+0xaa88c0)
#11 0x00007f451b83003b clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout
const&, llvm::Module*, clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >)
(/usr/lib/x86_64-linux-gnu/libclang-cpp.so.11+0x147803b)
#12 0x00007f451badd9b7 (/usr/lib/x86_64-linux-gnu/libclang-cpp.so.11+0x17259b7)
#13 0x00007f451ac37dd3 clang::ParseAST(clang::Sema&, bool, bool)
(/usr/lib/x86_64-linux-gnu/libclang-cpp.so.11+0x87fdd3)
#14 0x00007f451c145e08 clang::FrontendAction::Execute()
(/usr/lib/x86_64-linux-gnu/libclang-cpp.so.11+0x1d8de08)
#15 0x00007f451c0fe3c1
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/lib/x86_64-linux-gnu/libclang-cpp.so.11+0x1d463c1)
#16 0x00007f451c1aa22f
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/lib/x86_64-linux-gnu/libclang-cpp.so.11+0x1df222f)
#17 0x0000000000412370 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/lib/llvm-11/bin/clang+0x412370)
#18 0x0000000000410691 (/usr/lib/llvm-11/bin/clang+0x410691)
#19 0x000000000040e72b main (/usr/lib/llvm-11/bin/clang+0x40e72b)
#20 0x00007f45196a9b97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#21 0x000000000040d91a _start (/usr/lib/llvm-11/bin/clang+0x40d91a)
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 11.0.0-++20200225091415+89ba4acad6c-1~exp1~20200225082012.1524
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

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