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Compiler crash when targeting mips64 when returning fp128 after calling a function returning { i8, i128 } #96432
Description
Activity
@llvm/issue-subscribers-backend-mips
Author: None (beetrees)
Details
Attempting to compiler the following IR causes LLVM to crash ([compiler explorer](https://godbolt.org/z/cqKz4Ybxb)):target triple = "mips64el-unknown-linux-gnuabi64" define fp128 @<!-- -->foo() { call { i8, i128 } @<!-- -->bar() ret fp128 0xL00000000000000000000000000000000 } define { i8, i128 } @<!-- -->bar() { ret { i8, i128 } zeroinitializer }
Crash backtrace:
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace. Stack dump: 0. Program arguments: /opt/compiler-explorer/clang-trunk/bin/llc -o /app/output.s -x86-asm-syntax=intel <source> 1. Running pass 'Function Pass Manager' on module '<source>'. 2. Running pass 'MIPS DAG->DAG Pattern Instruction Selection' on function '@<!-- -->foo' #<!-- -->0 0x0000000003739428 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3739428) #<!-- -->1 0x0000000003736dac SignalHandler(int) Signals.cpp:0:0 #<!-- -->2 0x0000718fcb642520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520) #<!-- -->3 0x00000000034c3bb3 llvm::SelectionDAG::FoldConstantArithmetic(unsigned int, llvm::SDLoc const&, llvm::EVT, llvm::ArrayRef<llvm::SDValue>, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34c3bb3) #<!-- -->4 0x00000000034c79f4 llvm::SelectionDAG::getNode(unsigned int, llvm::SDLoc const&, llvm::EVT, llvm::SDValue, llvm::SDNodeFlags) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34c79f4) #<!-- -->5 0x0000000003430a84 getCopyFromParts(llvm::SelectionDAG&, llvm::SDLoc const&, llvm::SDValue const*, unsigned int, llvm::MVT, llvm::EVT, llvm::Value const*, llvm::SDValue, std::optional<unsigned int>, std::optional<llvm::ISD::NodeType>) (.isra.0) SelectionDAGBuilder.cpp:0:0 #<!-- -->6 0x000000000343fb56 llvm::TargetLowering::LowerCallTo(llvm::TargetLowering::CallLoweringInfo&) const (/opt/compiler-explorer/clang-trunk/bin/llc+0x343fb56) #<!-- -->7 0x000000000344172d llvm::SelectionDAGBuilder::lowerInvokable(llvm::TargetLowering::CallLoweringInfo&, llvm::BasicBlock const*) (/opt/compiler-explorer/clang-trunk/bin/llc+0x344172d) #<!-- -->8 0x0000000003462354 llvm::SelectionDAGBuilder::LowerCallTo(llvm::CallBase const&, llvm::SDValue, bool, bool, llvm::BasicBlock const*, llvm::TargetLowering::PtrAuthInfo const*) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3462354) #<!-- -->9 0x0000000003478998 llvm::SelectionDAGBuilder::visitCall(llvm::CallInst const&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3478998) #<!-- -->10 0x000000000348d487 llvm::SelectionDAGBuilder::visit(llvm::Instruction const&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x348d487) #<!-- -->11 0x0000000003505a53 llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, false, false, void, true, llvm::BasicBlock>, false, true>, llvm::ilist_iterator_w_bits<llvm::ilist_detail::node_options<llvm::Instruction, false, false, void, true, llvm::BasicBlock>, false, true>, bool&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3505a53) #<!-- -->12 0x0000000003507124 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3507124) #<!-- -->13 0x0000000003508f94 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x3508f94) #<!-- -->14 0x00000000015c3c1b llvm::MipsDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x15c3c1b) #<!-- -->15 0x00000000034f8ac1 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x34f8ac1) #<!-- -->16 0x000000000283368b llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0 #<!-- -->17 0x0000000002d72152 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d72152) #<!-- -->18 0x0000000002d722d1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d722d1) #<!-- -->19 0x0000000002d73f80 llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-trunk/bin/llc+0x2d73f80) #<!-- -->20 0x0000000000846ed4 compileModule(char**, llvm::LLVMContext&) llc.cpp:0:0 #<!-- -->21 0x000000000073ece6 main (/opt/compiler-explorer/clang-trunk/bin/llc+0x73ece6) #<!-- -->22 0x0000718fcb629d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90) #<!-- -->23 0x0000718fcb629e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40) #<!-- -->24 0x000000000083eb0e _start (/opt/compiler-explorer/clang-trunk/bin/llc+0x83eb0e)- added a commit that references this issue
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Attempting to compiler the following IR causes LLVM to crash (compiler explorer):
Crash backtrace: