[llvm-bugs] [Bug 37624] New: Undef operand to inline assembly triggers LowerAsmOperandForConstraint assertion
via llvm-bugs
llvm-bugs at lists.llvm.org
Tue May 29 10:53:12 PDT 2018
https://bugs.llvm.org/show_bug.cgi?id=37624
Bug ID: 37624
Summary: Undef operand to inline assembly triggers
LowerAsmOperandForConstraint assertion
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: unassignedbugs at nondot.org
Reporter: nikita.ppv at gmail.com
CC: llvm-bugs at lists.llvm.org
Running
define void @test() {
call void asm "", "i"({} undef)
ret void
}
through llc causes the following assertion failure when trying to
dyn_cast<ConstantSDNode>(Op) the empty input SDValue.
llc: /home/nikic/llvm/include/llvm/Support/Casting.h:92: static bool
llvm::isa_impl_cl<To, From*>::doit(const From*) [with To =
llvm::ConstantSDNode; From = llvm::SDNode]: Assertion `Val && "isa<> used on a
null pointer"' failed.
Stack dump:
0. Program arguments: build/bin/llc xyz.ll
1. Running pass 'Function Pass Manager' on module 'xyz.ll'.
2. Running pass 'X86 DAG->DAG Instruction Selection' on function '@test'
#0 0x0000000002594fe1 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/home/nikic/llvm/lib/Support/Unix/Signals.inc:488:0
#1 0x0000000002595074 PrintStackTraceSignalHandler(void*)
/home/nikic/llvm/lib/Support/Unix/Signals.inc:552:0
#2 0x00000000025933a0 llvm::sys::RunSignalHandlers()
/home/nikic/llvm/lib/Support/Signals.cpp:67:0
#3 0x00000000025949f7 SignalHandler(int)
/home/nikic/llvm/lib/Support/Unix/Signals.inc:351:0
#4 0x00007fc5bc854390 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)
#5 0x00007fc5bb5c6428 gsignal
/build/glibc-Cl5G7W/glibc-2.23/signal/../sysdeps/unix/sysv/linux/raise.c:54:0
#6 0x00007fc5bb5c802a abort /build/glibc-Cl5G7W/glibc-2.23/stdlib/abort.c:91:0
#7 0x00007fc5bb5bebd7 __assert_fail_base
/build/glibc-Cl5G7W/glibc-2.23/assert/assert.c:92:0
#8 0x00007fc5bb5bec82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)
#9 0x00000000010a63b0 llvm::isa_impl_cl<llvm::ConstantSDNode,
llvm::SDNode*>::doit(llvm::SDNode const*)
/home/nikic/llvm/include/llvm/Support/Casting.h:93:0
#10 0x00000000010a58ab llvm::isa_impl_wrap<llvm::ConstantSDNode, llvm::SDNode*,
llvm::SDNode*>::doit(llvm::SDNode* const&)
/home/nikic/llvm/include/llvm/Support/Casting.h:134:0
#11 0x00000000010a4459 llvm::isa_impl_wrap<llvm::ConstantSDNode, llvm::SDValue
const, llvm::SDNode*>::doit(llvm::SDValue const&)
/home/nikic/llvm/include/llvm/Support/Casting.h:126:0
#12 0x00000000010a2c54 bool llvm::isa<llvm::ConstantSDNode,
llvm::SDValue>(llvm::SDValue const&)
/home/nikic/llvm/include/llvm/Support/Casting.h:145:0
#13 0x00000000010a2706 llvm::cast_retty<llvm::ConstantSDNode,
llvm::SDValue>::ret_type llvm::dyn_cast<llvm::ConstantSDNode,
llvm::SDValue>(llvm::SDValue&)
/home/nikic/llvm/include/llvm/Support/Casting.h:329:0
#14 0x00000000011dfd37
llvm::X86TargetLowering::LowerAsmOperandForConstraint(llvm::SDValue,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>&, std::vector<llvm::SDValue, std::allocator<llvm::SDValue> >&,
llvm::SelectionDAG&) const
/home/nikic/llvm/lib/Target/X86/X86ISelLowering.cpp:39387:0
#15 0x0000000002368e48
llvm::SelectionDAGBuilder::visitInlineAsm(llvm::ImmutableCallSite)
/home/nikic/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:7570:0
#16 0x000000000236567c llvm::SelectionDAGBuilder::visitCall(llvm::CallInst
const&)
/home/nikic/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:6765:0
#17 0x000000000233c8ba llvm::SelectionDAGBuilder::visit(unsigned int,
llvm::User const&) /home/nikic/llvm/include/llvm/IR/Instruction.def:190:0
#18 0x000000000233c200 llvm::SelectionDAGBuilder::visit(llvm::Instruction
const&)
/home/nikic/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp:1072:0
#19 0x00000000023f5e0f
llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::ilist_detail::node_options<llvm::Instruction,
true, false, void>, false, true>,
llvm::ilist_iterator<llvm::ilist_detail::node_options<llvm::Instruction, true,
false, void>, false, true>, bool&)
/home/nikic/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:657:0
#20 0x00000000023fc13b
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&)
/home/nikic/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:1738:0
#21 0x00000000023f4ae0
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&)
/home/nikic/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp:471:0
#22 0x0000000001081c09 (anonymous
namespace)::X86DAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&)
/home/nikic/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp:177:0
#23 0x0000000001878c96
llvm::MachineFunctionPass::runOnFunction(llvm::Function&)
/home/nikic/llvm/lib/CodeGen/MachineFunctionPass.cpp:62:0
#24 0x0000000001d86dac llvm::FPPassManager::runOnFunction(llvm::Function&)
/home/nikic/llvm/lib/IR/LegacyPassManager.cpp:1520:0
#25 0x0000000001d86f45 llvm::FPPassManager::runOnModule(llvm::Module&)
/home/nikic/llvm/lib/IR/LegacyPassManager.cpp:1541:0
#26 0x0000000001d872c0 (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module&)
/home/nikic/llvm/lib/IR/LegacyPassManager.cpp:1597:0
#27 0x0000000001d879d5 llvm::legacy::PassManagerImpl::run(llvm::Module&)
/home/nikic/llvm/lib/IR/LegacyPassManager.cpp:1700:0
#28 0x0000000001d87be1 llvm::legacy::PassManager::run(llvm::Module&)
/home/nikic/llvm/lib/IR/LegacyPassManager.cpp:1732:0
#29 0x0000000000f900f2 compileModule(char**, llvm::LLVMContext&)
/home/nikic/llvm/tools/llc/llc.cpp:574:0
#30 0x0000000000f8e80d main /home/nikic/llvm/tools/llc/llc.cpp:344:0
#31 0x00007fc5bb5b1830 __libc_start_main
/build/glibc-Cl5G7W/glibc-2.23/csu/../csu/libc-start.c:325:0
#32 0x0000000000f8c519 _start (build/bin/llc+0xf8c519)
This probably also affects other backends.
--
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20180529/24aad082/attachment.html>
More information about the llvm-bugs
mailing list