[LLVM][AMDGPU] Isel error for %llvm.amdgcn.wmma.f16.16x16x16.f16 for GFX1100.

[nirvedhmeshram]

The input ll file is provided here. It gives the following bug (I will update the dump with debug symbols once I have it)

llc wmma.ll -march=amdgcn -mcpu=gfx1100

LLVM ERROR: Cannot select: intrinsic %llvm.amdgcn.wmma.f16.16x16x16.f16
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: ./llvm-project/bin/llc wmma.ll -march=amdgcn -mcpu=gfx1100
1.      Running pass 'CallGraph Pass Manager' on module 'wmma.ll'.
2.      Running pass 'AMDGPU DAG->DAG Pattern Instruction Selection' on function '@matmul_dispatch_0_matmul_16x16x16_f16'
 #0 0x00005dc15c6eeee7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (./llvm-project/bin/llc+0x23bcee7)
 #1 0x00005dc15c6ecd1e llvm::sys::RunSignalHandlers() (./llvm-project/bin/llc+0x23bad1e)
 #2 0x00005dc15c6ef5ba SignalHandler(int) Signals.cpp:0:0
 #3 0x00007b1748442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007b17484969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x00007b1748442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007b17484287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x00005dc15c66e883 llvm::report_fatal_error(llvm::Twine const&, bool) (./llvm-project/bin/llc+0x233c883)
 #8 0x00005dc15c536ba2 (./llvm-project/bin/llc+0x2204ba2)
 #9 0x00005dc15c5360d5 (./llvm-project/bin/llc+0x22040d5)
#10 0x00005dc15b471b14 AMDGPUDAGToDAGISel::SelectINTRINSIC_WO_CHAIN(llvm::SDNode*) (./llvm-project/bin/llc+0x113fb14)
#11 0x00005dc15c52cfec llvm::SelectionDAGISel::DoInstructionSelection() (./llvm-project/bin/llc+0x21fafec)
#12 0x00005dc15c52c6e7 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (./llvm-project/bin/llc+0x21fa6e7)
#13 0x00005dc15c52b330 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (./llvm-project/bin/llc+0x21f9330)
#14 0x00005dc15c529c40 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (./llvm-project/bin/llc+0x21f7c40)
#15 0x00005dc15b46d94d AMDGPUDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) (./llvm-project/bin/llc+0x113b94d)
#16 0x00005dc15c5285fe llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (./llvm-project/bin/llc+0x21f65fe)
#17 0x00005dc15badea10 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (./llvm-project/bin/llc+0x17aca10)
#18 0x00005dc15bf21d94 llvm::FPPassManager::runOnFunction(llvm::Function&) (./llvm-project/bin/llc+0x1befd94)
#19 0x00005dc15b72a772 (anonymous namespace)::CGPassManager::runOnModule(llvm::Module&) CallGraphSCCPass.cpp:0:0
#20 0x00005dc15bf22afc llvm::legacy::PassManagerImpl::run(llvm::Module&) (./llvm-project/bin/llc+0x1bf0afc)
#21 0x00005dc15a917b77 main (./llvm-project/bin/llc+0x5e5b77)
#22 0x00007b1748429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#23 0x00007b1748429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#24 0x00005dc15a9121c5 _start (./llvm-project/bin/llc+0x5e01c5)
Aborted (core dumped)

[llvmbot]

@llvm/issue-subscribers-backend-amdgpu

Author: Nirvedh Meshram (nirvedhmeshram)

The input ll file is provided [here](https://gist.github.com/nirvedhmeshram/dee07c32b15db2920570878cbec6af35). It gives the following bug (I will update the dump with debug symbols once I have it) ``` llc wmma.ll -march=amdgcn -mcpu=gfx1100 ``` ``` LLVM ERROR: Cannot select: intrinsic %llvm.amdgcn.wmma.f16.16x16x16.f16 PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace. Stack dump: 0. Program arguments: ./llvm-project/bin/llc wmma.ll -march=amdgcn -mcpu=gfx1100 1. Running pass 'CallGraph Pass Manager' on module 'wmma.ll'. 2. Running pass 'AMDGPU DAG->DAG Pattern Instruction Selection' on function '@matmul_dispatch_0_matmul_16x16x16_f16' #0 0x00005dc15c6eeee7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (./llvm-project/bin/llc+0x23bcee7) #1 0x00005dc15c6ecd1e llvm::sys::RunSignalHandlers() (./llvm-project/bin/llc+0x23bad1e) #2 0x00005dc15c6ef5ba SignalHandler(int) Signals.cpp:0:0 #3 0x00007b1748442520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520) #4 0x00007b17484969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc) #5 0x00007b1748442476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476) #6 0x00007b17484287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3) #7 0x00005dc15c66e883 llvm::report_fatal_error(llvm::Twine const&, bool) (./llvm-project/bin/llc+0x233c883) #8 0x00005dc15c536ba2 (./llvm-project/bin/llc+0x2204ba2) #9 0x00005dc15c5360d5 (./llvm-project/bin/llc+0x22040d5) #10 0x00005dc15b471b14 AMDGPUDAGToDAGISel::SelectINTRINSIC_WO_CHAIN(llvm::SDNode*) (./llvm-project/bin/llc+0x113fb14) #11 0x00005dc15c52cfec llvm::SelectionDAGISel::DoInstructionSelection() (./llvm-project/bin/llc+0x21fafec) #12 0x00005dc15c52c6e7 llvm::SelectionDAGISel::CodeGenAndEmitDAG() (./llvm-project/bin/llc+0x21fa6e7) #13 0x00005dc15c52b330 llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (./llvm-project/bin/llc+0x21f9330) #14 0x00005dc15c529c40 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (./llvm-project/bin/llc+0x21f7c40) #15 0x00005dc15b46d94d AMDGPUDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) (./llvm-project/bin/llc+0x113b94d) #16 0x00005dc15c5285fe llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (./llvm-project/bin/llc+0x21f65fe) #17 0x00005dc15badea10 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (./llvm-project/bin/llc+0x17aca10) #18 0x00005dc15bf21d94 llvm::FPPassManager::runOnFunction(llvm::Function&) (./llvm-project/bin/llc+0x1befd94) #19 0x00005dc15b72a772 (anonymous namespace)::CGPassManager::runOnModule(llvm::Module&) CallGraphSCCPass.cpp:0:0 #20 0x00005dc15bf22afc llvm::legacy::PassManagerImpl::run(llvm::Module&) (./llvm-project/bin/llc+0x1bf0afc) #21 0x00005dc15a917b77 main (./llvm-project/bin/llc+0x5e5b77) #22 0x00007b1748429d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90) #23 0x00007b1748429e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40) #24 0x00005dc15a9121c5 _start (./llvm-project/bin/llc+0x5e01c5) Aborted (core dumped) ```

[nirvedhmeshram]

closing this as I see the issue is that we need -mattr=+wavefrontsize64 that the front end did not provide. With that the IR passes

[arsenm]

There are separate wave32 and wave64 patterns but I think both should work