| Issue |
180419
|
| Summary |
mlir-opt crash: SPIRVConversionTarget fails with invalid cast on non-SPIRV types
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
xvv4402
|
Bug Op: spirv.Variable (Triggering legalization check)
Bug Pass: --convert-cf-to-spirv
Detailed Description: The mlir-opt tool crashes during SPIR-V legalization. When the conversion target checks the legality of an operation (likely the spirv.Variable or surrounding context), it invokes SPIRVType::getExtensions. This utility internally performs an llvm::cast<mlir::spirv::SPIRVType> on all types involved in the operation.
```mlir
module {
llvm.func @main() {
%0 = llvm.dso_local_equivalent @main : !llvm.ptr
%1 = smt.forall ["x"] {
^bb0(%arg0: !smt.int):
%c1 = smt.int.constant 1
%2 = smt.int.add %arg0, %c1
%3 = smt.eq %2, %arg0 : !smt.int
smt.yield %3 : !smt.bool
}
%4 = vector.constant_mask [1] : vector<1xi1>
%5 = spirv.Variable : !spirv.ptr<vector<1xi1>, Function>
llvm.return
}
}
```
```
mlir-opt --convert-cf-to-spirv temp.mlir
```
```
mlir-opt: llvm-project-llvmorg-22.1.0-rc1/llvm/include/llvm/Support/Casting.h:566: decltype(auto) llvm::cast(From&) [with To = mlir::spirv::SPIRVType; From = mlir::Type]: Assertion `isa<To>(Val) && "cast<Ty>() argument of incompatible type!"' 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: llvmorg-22.1.0-install/bin/mlir-opt --convert-cf-to-spirv temp.mlir
#0 0x0000600594e68e32 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (llvmorg-22.1.0-install/bin/mlir-opt+0x252fe32)
#1 0x0000600594e655af llvm::sys::RunSignalHandlers() (llvmorg-22.1.0-install/bin/mlir-opt+0x252c5af)
#2 0x0000600594e656fc SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x000079decc045330 (/lib/x86_64-linux-gnu/libc.so.6+0x45330)
#4 0x000079decc09eb2c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x000079decc09eb2c __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x000079decc09eb2c pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x000079decc04527e raise ./signal/../sysdeps/posix/raise.c:27:6
#8 0x000079decc0288ff abort ./stdlib/abort.c:81:7
#9 0x000079decc02881b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x000079decc03b517 (/lib/x86_64-linux-gnu/libc.so.6+0x3b517)
#11 0x0000600598fab848 (llvmorg-22.1.0-install/bin/mlir-opt+0x6672848)
#12 0x0000600598fad111 (anonymous namespace)::TypeExtensionVisitor::add(mlir::spirv::SPIRVType) SPIRVTypes.cpp:0:0
#13 0x0000600598fad34a mlir::spirv::SPIRVType::getExtensions(llvm::SmallVectorImpl<llvm::ArrayRef<mlir::spirv::Extension>>&, std::optional<mlir::spirv::StorageClass>) (llvmorg-22.1.0-install/bin/mlir-opt+0x667434a)
#14 0x0000600598b5bc41 mlir::SPIRVConversionTarget::isLegalOp(mlir::Operation*) (llvmorg-22.1.0-install/bin/mlir-opt+0x6222c41)
```
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