[llvm-bugs] [Bug 49956] New: Failed to convert memory constraint code to constraint id.

Tue Apr 13 13:23:45 PDT 2021

https://bugs.llvm.org/show_bug.cgi?id=49956

            Bug ID: 49956
           Summary: Failed to convert memory constraint code to constraint
                    id.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: AArch64
          Assignee: unassignedbugs at nondot.org
          Reporter: ndesaulniers at google.com
                CC: arnaud.degrandmaison at arm.com,
                    daniel.sanders at imgtec.com, jpaquette at apple.com,
                    konstantin.schwarz at hightec-rt.com,
                    llvm-bugs at lists.llvm.org, Matthew.Arsenault at amd.com,
                    natechancellor at gmail.com, smithp352 at googlemail.com,
                    srhines at google.com, t.p.northover at gmail.com,
                    Ties.Stuij at arm.com
            Blocks: 4068

int a;
static void invoke_syscall() {
  char b = __builtin_alloca(a);
  asm("" : "=o"(b));
}
void c(void) { invoke_syscall(); }

$ clang --target=aarch64-linux-gnu foo.c
clang-13: ../lib/CodeGen/GlobalISel/InlineAsmLowering.cpp:380: bool
llvm::InlineAsmLowering::lowerInlineAsm(llvm::MachineIRBuilder &, const
llvm::CallBase &, std::function<ArrayRef<Register> (const Value &)>) const:
Assertion `ConstraintID != InlineAsm::Constraint_Unknown && "Failed to convert
memory constraint code to constraint id."' failed.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0.      Program arguments: /android0/llvm-project/llvm/build/bin/clang-13 -cc1
-triple aarch64-unknown-linux-gnu -emit-obj -mrelax-all --mrelax-relocations
-disable-free -main-file-name foo.c -mrelocation-model static
-mframe-pointer=non-leaf -fmath-errno -fno-rounding-math -mconstructor-aliases
-munwind-tables -target-cpu generic -target-feature +neon -target-abi aapcs
-fallow-half-arguments-and-returns -debugger-tuning=gdb
-fcoverage-compilation-dir=/android0/linux-next -resource-dir
/android0/llvm-project/llvm/build/lib/clang/13.0.0 -internal-isystem
/android0/llvm-project/llvm/build/lib/clang/13.0.0/include -internal-isystem
/usr/local/include -internal-externc-isystem /include -internal-externc-isystem
/usr/include -fdebug-compilation-dir=/android0/linux-next -ferror-limit 19
-fno-signed-char -fgnuc-version=4.2.1 -fcolor-diagnostics -faddrsig
-D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/foo-59fcf4.o -x c foo.c
1.      <eof> parser at end of file
2.      Code generation
3.      Running pass 'Function Pass Manager' on module 'foo.c'.
4.      Running pass 'IRTranslator' on function '@invoke_syscall'
 #0 0x0000000003d8cb03 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int)
(/android0/llvm-project/llvm/build/bin/clang-13+0x3d8cb03)
 #1 0x0000000003d8a84e llvm::sys::RunSignalHandlers()
(/android0/llvm-project/llvm/build/bin/clang-13+0x3d8a84e)
 #2 0x0000000003d8cfcf SignalHandler(int) Signals.cpp:0:0
 #3 0x00007f7aef019140 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x14140)
 #4 0x00007f7aeeaf1ce1 raise ./signal/../sysdeps/unix/sysv/linux/raise.c:51:1
 #5 0x00007f7aeeadb537 abort ./stdlib/abort.c:81:7
 #6 0x00007f7aeeadb40f get_sysdep_segment_value ./intl/loadmsgcat.c:509:8
 #7 0x00007f7aeeadb40f _nl_load_domain ./intl/loadmsgcat.c:970:34
 #8 0x00007f7aeeaea662 (/lib/x86_64-linux-gnu/libc.so.6+0x34662)
 #9 0x0000000004bc521f
llvm::InlineAsmLowering::lowerInlineAsm(llvm::MachineIRBuilder&, llvm::CallBase
const&, std::function<llvm::ArrayRef<llvm::Register> (llvm::Value const&)>)
const (/android0/llvm-project/llvm/build/bin/clang-13+0x4bc521f)
#10 0x0000000004badf58 llvm::IRTranslator::translateInlineAsm(llvm::CallBase
const&, llvm::MachineIRBuilder&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x4badf58
#11 0x0000000004bae6ed llvm::IRTranslator::translateCall(llvm::User const&,
llvm::MachineIRBuilder&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x4bae6ed)
#12 0x0000000004bb2a91 llvm::IRTranslator::translate(llvm::Instruction const&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x4bb2a91)
#13 0x0000000004bb449b
llvm::IRTranslator::runOnMachineFunction(llvm::MachineFunction&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x4bb449b)
#14 0x000000000320187e
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x320187e)
#15 0x0000000003681b18 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x3681b18)
#16 0x0000000003688318 llvm::FPPassManager::runOnModule(llvm::Module&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x3688318)
#17 0x00000000036821c7 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x36821c7)
#18 0x0000000003ff278b (anonymous
namespace)::EmitAssemblyHelper::EmitAssemblyWithNewPassManager(clang::BackendAction,
std::unique_ptr<llvm::raw_pwrite_stream,
std::default_delete<llvm::raw_pwrite_stream> >) BackendUtil.cpp:0:0
#19 0x0000000003feb60f 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> >)
(/android0/llvm-project/llvm/build/bin/clang-13+0x3feb60f)
#20 0x00000000048c2ce7
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
CodeGenAction.cpp:0:0
#21 0x000000000510ca23 clang::ParseAST(clang::Sema&, bool, bool)
(/android0/llvm-project/llvm/build/bin/clang-13+0x510ca23)
#22 0x000000000480b4b3 clang::FrontendAction::Execute()
(/android0/llvm-project/llvm/build/bin/clang-13+0x480b4b3)
#23 0x000000000473d0d3
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/android0/llvm-project/llvm/build/bin/clang-13+0x473d0d3)
#24 0x00000000048bcce7
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/android0/llvm-project/llvm/build/bin/clang-13+0x48bcce7)
#25 0x00000000026b0382 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/android0/llvm-project/llvm/build/bin/clang-13+0x26b0382)
#26 0x00000000026ae2a2 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#27 0x00000000026adff4 main
(/android0/llvm-project/llvm/build/bin/clang-13+0x26adff4)
#28 0x00007f7aeeadcd0a __libc_start_main ./csu/../csu/libc-start.c:308:16
#29 0x00000000026aaf2a _start
(/android0/llvm-project/llvm/build/bin/clang-13+0x26aaf2a)

Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=4068
[Bug 4068] [Meta] Compiling the Linux kernel with clang
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