[AArch64][SME] LLVM ERROR: Cannot select: t2: i32 = vscale Constant:i32<1> #168377
Description
View on Compiler Explorer: https://godbolt.org/z/hsWrez5dj
Input LLVM IR
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32"
target triple = "aarch64--linux-gnueabihf"
define i32 @f() {
entry:
%0 = tail call i32 @llvm.vscale.i32()
ret i32 %0
}
; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vscale.i32() #0
attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }Command
llc -mtriple=aarch64-none-elf -mattr=+sme2 -O2Output
Compilation failed:
[stderr]
LLVM ERROR: Cannot select: t2: i32 = vscale Constant:i32<1>
In function: f
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: /opt/compiler-explorer/clang-assertions-trunk/bin/llc -o /app/output.s -x86-asm-syntax=intel -mtriple=aarch64-none-elf -mattr=+sme2 -O2 <source>
1. Running pass 'Function Pass Manager' on module '<source>'.
2. Running pass 'AArch64 Instruction Selection' on function '@f'
#0 0x00000000041b99f8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x41b99f8)
#1 0x00000000041b68a4 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#2 0x00007ca518a42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
#3 0x00007ca518a969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
#4 0x00007ca518a42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
#5 0x00007ca518a287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
#6 0x00000000007c0c7d llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) JSON.cpp:0:0
#7 0x0000000003f43881 llvm::SelectionDAGISel::CannotYetSelect(llvm::SDNode*) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f43881)
#8 0x0000000003f481a9 llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f481a9)
#9 0x0000000000d00b09 (anonymous namespace)::AArch64DAGToDAGISel::Select(llvm::SDNode*) AArch64ISelDAGToDAG.cpp:0:0
#10 0x0000000003f3f6db llvm::SelectionDAGISel::DoInstructionSelection() (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f3f6db)
#11 0x0000000003f4e808 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f4e808)
#12 0x0000000003f519d8 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f519d8)
#13 0x0000000003f53455 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f53455)
#14 0x0000000003f3eecf llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x3f3eecf)
#15 0x000000000309a049 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (.part.0) MachineFunctionPass.cpp:0:0
#16 0x00000000036e7246 llvm::FPPassManager::runOnFunction(llvm::Function&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x36e7246)
#17 0x00000000036e75f1 llvm::FPPassManager::runOnModule(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x36e75f1)
#18 0x00000000036e7e5f llvm::legacy::PassManagerImpl::run(llvm::Module&) (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x36e7e5f)
#19 0x00000000008fbb5f compileModule(char**, llvm::LLVMContext&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>&) llc.cpp:0:0
#20 0x00000000007c8ae9 main (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x7c8ae9)
#21 0x00007ca518a29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#22 0x00007ca518a29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#23 0x00000000008f0df5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/llc+0x8f0df5)
Program terminated with signal: SIGSEGV