https://llvm.org/bugs/show_bug.cgi?id=26870
Bug ID: 26870
Summary: Assertion: Inst.getNumOperands() == 6 &&
Inst.getOperand(RegOp).isReg() && ...
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: h...@chromium.org
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
$ cat /work/creduce/a.ii
class A {
public:
long long m_fn1();
unsigned getTypeAllocSize___trans_tmp_2;
long m_fn2(int *) {
long a;
long long b = (m_fn1() + 7) / 8;
a = (b + 1) / getTypeAllocSize___trans_tmp_2 *
getTypeAllocSize___trans_tmp_2;
return a;
}
};
class B {
public:
int *m_fn3();
};
class C {
A DL;
int *m_fn4(B &);
};
int c, d;
int *C::m_fn4(B &p1) {
{
unsigned e = DL.m_fn2(&c), f = DL.m_fn2(&d);
if (e == f)
return p1.m_fn3();
}
}
$ bin/clang -cc1 -triple i686-pc-windows-msvc18.0.0 -emit-obj -target-cpu
pentium4 -O2 -std=c++11 -vectorize-loops -vectorize-slp -x c++
/work/creduce/a.ii
/work/creduce/a.ii:28:1: warning: control may reach end of non-void function
}
^
clang: ../lib/Target/X86/X86MCInstLower.cpp:367: void
SimplifyShortMoveForm(llvm::X86AsmPrinter&, llvm::MCInst&, unsigned int):
Assertion `Inst.getNumOperands() == 6 && Inst.getOperand(RegOp).isReg() &&
Inst.getOperand(AddrBase + X86::AddrBaseReg).isReg() &&
Inst.getOperand(AddrBase + X86::AddrScaleAmt).isImm() &&
Inst.getOperand(AddrBase + X86::AddrIndexReg).isReg() &&
Inst.getOperand(AddrBase + X86::AddrSegmentReg).isReg() &&
(Inst.getOperand(AddrOp).isExpr() || Inst.getOperand(AddrOp).isImm()) &&
"Unexpected instruction!"' failed.
#0 0x0000000001ac2cd5 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1ac2cd5)
#1 0x0000000001ac0a86 llvm::sys::RunSignalHandlers()
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1ac0a86)
#2 0x0000000001ac0cb1 SignalHandler(int)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1ac0cb1)
#3 0x00007f6146353340 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10340)
#4 0x00007f6145574cc9 gsignal
/build/eglibc-3GlaMS/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f61455780d8 abort
/build/eglibc-3GlaMS/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007f614556db86 __assert_fail_base
/build/eglibc-3GlaMS/eglibc-2.19/assert/assert.c:92:0
#7 0x00007f614556dc32 (/lib/x86_64-linux-gnu/libc.so.6+0x2fc32)
#8 0x000000000117dae4 SimplifyShortMoveForm(llvm::X86AsmPrinter&,
llvm::MCInst&, unsigned int)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x117dae4)
#9 0x000000000117fd90 (anonymous
namespace)::X86MCInstLower::Lower(llvm::MachineInstr const*, llvm::MCInst&)
const [clone .constprop.249]
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x117fd90)
#10 0x0000000001180d28 llvm::X86AsmPrinter::EmitInstruction(llvm::MachineInstr
const*) (/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1180d28)
#11 0x0000000001f62be7 llvm::AsmPrinter::EmitFunctionBody()
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1f62be7)
#12 0x0000000001178636
llvm::X86AsmPrinter::runOnMachineFunction(llvm::MachineFunction&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1178636)
#13 0x000000000177d223 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x177d223)
#14 0x000000000177d5db llvm::FPPassManager::runOnModule(llvm::Module&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x177d5db)
#15 0x000000000177d8ef llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x177d8ef)
#16 0x0000000001bec6ba clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::CodeGenOptions const&, clang::TargetOptions const&, clang::LangOptions
const&, llvm::DataLayout const&, llvm::Module*, clang::BackendAction,
llvm::raw_pwrite_stream*)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1bec6ba)
#17 0x00000000021798ec
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x21798ec)
#18 0x000000000249315b clang::ParseAST(clang::Sema&, bool, bool)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x249315b)
#19 0x0000000002179a7e clang::CodeGenAction::ExecuteAction()
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x2179a7e)
#20 0x0000000001ec8f56 clang::FrontendAction::Execute()
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1ec8f56)
#21 0x0000000001ea5b7e
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1ea5b7e)
#22 0x0000000001f4c72e
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x1f4c72e)
#23 0x00000000009e4a48 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x9e4a48)
#24 0x00000000009a0ab5 main
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x9a0ab5)
#25 0x00007f614555fec5 __libc_start_main
/build/eglibc-3GlaMS/eglibc-2.19/csu/libc-start.c:321:0
#26 0x00000000009e09f4 _start
(/usr/local/google/work/llvm/build.release/bin/clang-3.9+0x9e09f4)
Stack dump:
0. Program arguments: bin/clang -cc1 -triple i686-pc-windows-msvc18.0.0
-emit-obj -target-cpu pentium4 -O2 -std=c++11 -vectorize-loops -vectorize-slp
-x c++ /work/creduce/a.ii
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module '/work/creduce/a.ii'.
4. Running pass 'X86 Assembly / Object Emitter' on function
'@"\01?m_fn4@C@@AAEPAHAAVB@@@Z"'
Aborted (core dumped)
This breaks self-hosting 32-bit Clang on Windows.
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