| Issue |
180417
|
| Summary |
mlir-opt crash: ShapeOfOpToConstShapeOp assertion failure during --inline
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
xvv4402
|
**Bug Op**: shape.shape_of
**Bug Pass**: --inline
**Detailed Description**: The mlir-opt tool crashes during the --inline pass (which often triggers cleanup/folding patterns). The pattern ShapeOfOpToConstShapeOp within the Shape dialect incorrectly performs a llvm::cast<TypedValue<TensorType>> on an operation's result without verifying the type. When the inliner attempts to simplify the IR, it triggers this assertion failure in Shape.cpp.
```mlir
module {
emitc.class @MyClass {
emitc.field @fieldName0 : !emitc.array<1xf32>
}
func.func @main() {
%0 = "emitc.constant"() <{value = 0 : i32}> : () -> i32
%1 = arith.extsi %0 : i32 to i64
%2 = arith.trunci %1 : i64 to i32
%3 = tensor.from_elements %2 : tensor<1xi32>
%4 = tosa.clamp %3 {max_val = 100 : i32, min_val = 0 : i32} : (tensor<1xi32>) -> tensor<1xi32>
%shape3 = shape.shape_of %3 : tensor<1xi32> -> !shape.shape
%shape4 = shape.shape_of %4 : tensor<1xi32> -> !shape.shape
%5 = shape.cstr_eq %shape4, %shape3 : !shape.shape, !shape.shape
return
}
}
```
```
mlir-opt --inline temp.mlir
```
```
mlir-opt: llvm-project-llvmorg-22.1.0-rc1/llvm/include/llvm/Support/Casting.h:560: decltype(auto) llvm::cast(const From&) [with To = mlir::detail::TypedValue<mlir::TensorType>; From = mlir::OpResult]: 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 --inline temp.mlir
#0 0x0000595b9356be32 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (llvmorg-22.1.0-install/bin/mlir-opt+0x252fe32)
#1 0x0000595b935685af llvm::sys::RunSignalHandlers() (llvmorg-22.1.0-install/bin/mlir-opt+0x252c5af)
#2 0x0000595b935686fc SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x000070cbbc845330 (/lib/x86_64-linux-gnu/libc.so.6+0x45330)
#4 0x000070cbbc89eb2c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x000070cbbc89eb2c __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x000070cbbc89eb2c pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x000070cbbc84527e raise ./signal/../sysdeps/posix/raise.c:27:6
#8 0x000070cbbc8288ff abort ./stdlib/abort.c:81:7
#9 0x000070cbbc82881b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x000070cbbc83b517 (/lib/x86_64-linux-gnu/libc.so.6+0x3b517)
#11 0x0000595b96d66027 (anonymous namespace)::ShapeOfOpToConstShapeOp::matchAndRewrite(mlir::shape::ShapeOfOp, mlir::PatternRewriter&) const Shape.cpp:0:0
#12 0x0000595b9ad96e03 mlir::PatternApplicator::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&, llvm::function_ref<bool (mlir::Pattern const&)>, llvm::function_ref<void (mlir::Pattern const&)>, llvm::function_ref<llvm::LogicalResult (mlir::Pattern const&)>)::'lambda'()::operator()() const PatternApplicator.cpp:0:0
```
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