target triple = "powerpc64le-unknown-linux-gnu"
define i32 @test(i32 %arg) {
%icmp = icmp sgt i32 %arg, -1
%select = select i1 %icmp, i16 1, i16 0
%select1 = select i1 %icmp, i16 16384, i16 0
%lshr = lshr i16 %select1, 1
%zext = zext i16 %lshr to i32
%lshr2 = lshr i32 %zext, 1
%shl = shl i16 %select, 1
%zext3 = zext i16 %shl to i32
%or = or i32 %lshr2, %zext3
ret i32 %or
}llc: /home/npopov/repos/llvm-project/llvm/include/llvm/CodeGen/SelectionDAGNodes.h:1035: const SDValue &llvm::SDNode::getOperand(unsigned int) const: Assertion `Num < NumOperands && "Invalid child # of SDNode!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace and instructions to reproduce the bug.
Stack dump:
0. Program arguments: build/bin/llc
1. Running pass 'Function Pass Manager' on module '<stdin>'.
2. Running pass 'PowerPC DAG->DAG Pattern Instruction Selection' on function '@test'
#0 0x000000000794da28 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (build/bin/llc+0x794da28)
#1 0x000000000794b115 llvm::sys::RunSignalHandlers() (build/bin/llc+0x794b115)
#2 0x000000000794e7d1 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007f8258828bb0 __restore_rt (/lib64/libc.so.6+0x19bb0)
#4 0x00007f825888209c __pthread_kill_implementation (/lib64/libc.so.6+0x7309c)
#5 0x00007f8258828a7e gsignal (/lib64/libc.so.6+0x19a7e)
#6 0x00007f82588106d0 abort (/lib64/libc.so.6+0x16d0)
#7 0x00007f8258810639 __assert_perror_fail (/lib64/libc.so.6+0x1639)
#8 0x000000000595cd14 llvm::PPCTargetLowering::DAGCombineExtBoolTrunc(llvm::SDNode*, llvm::TargetLowering::DAGCombinerInfo&) const PPCISelLowering.cpp:0:0
#9 0x0000000005960e43 llvm::PPCTargetLowering::PerformDAGCombine(llvm::SDNode*, llvm::TargetLowering::DAGCombinerInfo&) const PPCISelLowering.cpp:0:0
#10 0x0000000007527da2 (anonymous namespace)::DAGCombiner::combine(llvm::SDNode*) DAGCombiner.cpp:0:0
#11 0x0000000007526ae6 llvm::SelectionDAG::Combine(llvm::CombineLevel, llvm::BatchAAResults*, llvm::CodeGenOptLevel) (build/bin/llc+0x7526ae6)
#12 0x000000000772cb76 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (build/bin/llc+0x772cb76)
#13 0x000000000772b8c1 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (build/bin/llc+0x772b8c1)
#14 0x0000000007728cf0 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (build/bin/llc+0x7728cf0)
#15 0x0000000005971b4e (anonymous namespace)::PPCDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) PPCISelDAGToDAG.cpp:0:0
