| Issue |
179380
|
| Summary |
[mlir-opt] Crash in sparsification-and-bufferization pass triggered by emitc.unary_minus folding on i1
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
compilerStudyer
|
The compiler crashes during the **--sparsification-and-bufferization** pass when encountering an emitc.unary_minus operation acting on an i1 (1-bit integer) type.
The crash is rooted in an APInt assertion failure, specifically when the folding or constant propagation logic attempts to handle the negation of a 1-bit value.
```mlir
module {
func.func @main() {
%0 = irdl.c_pred "::llvm::isa<::mlir::IntegerAttr>($_self)"
%1 = sparse_tensor.has_runtime_library
%2 = math.ctlz %1 : i1
%3 = math.ipowi %2, %1 : i1
%4 = emitc.unary_minus %3 : (i1) -> i1
return
}
}
```
```
mlir-opt --sparsification-and-bufferization test.mlir
```
```
mlir-opt: llvm-project-llvmorg-22.1.0-rc1/llvm/include/llvm/ADT/APInt.h:120: llvm::APInt::APInt(unsigned int, uint64_t, bool, bool): Assertion `llvm::isIntN(BitWidth, val) && "Value is not an N-bit signed value"' 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 --sparsification-and-bufferization test.mlir
#0 0x000063b75b1b3e32 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (llvmorg-22.1.0-install/bin/mlir-opt+0x252fe32)
#1 0x000063b75b1b05af llvm::sys::RunSignalHandlers() (llvmorg-22.1.0-install/bin/mlir-opt+0x252c5af)
#2 0x000063b75b1b06fc SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x000071ea6b445330 (/lib/x86_64-linux-gnu/libc.so.6+0x45330)
#4 0x000071ea6b49eb2c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
#5 0x000071ea6b49eb2c __pthread_kill_internal ./nptl/pthread_kill.c:78:10
#6 0x000071ea6b49eb2c pthread_kill ./nptl/pthread_kill.c:89:10
#7 0x000071ea6b44527e raise ./signal/../sysdeps/posix/raise.c:27:6
#8 0x000071ea6b4288ff abort ./stdlib/abort.c:81:7
#9 0x000071ea6b42881b _nl_load_domain ./intl/loadmsgcat.c:1177:9
#10 0x000071ea6b43b517 (/lib/x86_64-linux-gnu/libc.so.6+0x3b517)
```
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