[mlir](test-linalg-decompose-ops) mlir-opt crashes at DecomposeLinalgOps.cpp:363 with assertion `!allUsesReplaced && "peeled scalar operation is erased when it wasnt expected to be"' failed.
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Description
git version: 42f2cd0c980cc1a924619ecaeaa51ca7b55164ab
MLIR Program:
```mlir
#map = affine_map<(d0) -> (d0)>
module {
func.func @m12(%arg0: index, %arg1: index) -> () {
%true = arith.constant true
%c2 = arith.constant 2 : index
%c10 = arith.constant 10 : index
%c11 = arith.constant 11 : index
%c22 = arith.constant 22 : index
%cst_4 = arith.constant dense<26> : vector<10xindex>
%c0 = arith.constant 0 : index
%2 = tensor.empty() : tensor<27xi1>
%alloc_5 = memref.alloc() : memref<27xf32>
%alloc_6 = memref.alloc(%c11, %c10) : memref
%6 = affine.vector_load %alloc_5[%c22] : memref<27xf32>, vector<10xf32>
%10 = tensor.empty() : tensor<27xi1>
%11 = linalg.generic {indexing_maps = [#map, #map, #map, #map], iterator_types = ["parallel"]} ins(%2, %2, %2 : tensor<27xi1>, tensor<27xi1>, tensor<27xi1>) outs(%10 : tensor<27xi1>) {
^bb0(%in: i1, %in_7: i1, %in_8: i1, %out: i1):
bufferization.dealloc_tensor %10 : tensor<27xi1>
%12 = vector.create_mask %c2 : vector<10xi1>
vector.scatter %alloc_6[%c0, %c0, %c10] [%cst_4], %12, %6 : memref, vector<10xindex>, vector<10xi1>, vector<10xf32>
linalg.yield %true : i1
} -> tensor<27xi1>
return
}
}
```
Reproduce Command: `mlir-opt -test-linalg-decompose-ops a.mlir`
StackTrace:
```
mlir-opt: /data2/dependency/dev/llvm-project/mlir/lib/Dialect/Linalg/Transforms/DecomposeLinalgOps.cpp:363: virtual llvm::LogicalResult {anonymous}::DecomposeLinalgOp::matchAndRewrite(mlir::linalg::GenericOp, mlir::PatternRewriter&) const: Assertion `!allUsesReplaced && "peeled scalar operation is erased when it wasnt expected to be"' 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: mlir-opt -test-linalg-decompose-ops a.mlir
#0 0x00005593cd9a4aff llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x20adaff)
#1 0x00005593cd9a165c llvm::sys::RunSignalHandlers() (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x20aa65c)
#2 0x00005593cd9a1803 SignalHandler(int, siginfo_t*, void*) Signals.cpp:0:0
#3 0x00007f43c6377420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#4 0x00007f43c5e6200b raise (/lib/x86_64-linux-gnu/libc.so.6+0x4300b)
#5 0x00007f43c5e41859 abort (/lib/x86_64-linux-gnu/libc.so.6+0x22859)
#6 0x00007f43c5e41729 (/lib/x86_64-linux-gnu/libc.so.6+0x22729)
#7 0x00007f43c5e52fd6 (/lib/x86_64-linux-gnu/libc.so.6+0x33fd6)
#8 0x00005593d46b0b1e (anonymous namespace)::DecomposeLinalgOp::matchAndRewrite(mlir::linalg::GenericOp, mlir::PatternRewriter&) const DecomposeLinalgOps.cpp:0:0
#9 0x00005593cdaba7e0 mlir::detail::OpOrInterfaceRewritePatternBase::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&) const (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x21c37e0)
#10 0x00005593d6e7b5c2 mlir::PatternApplicator::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&, llvm::function_ref, llvm::function_ref, llvm::function_ref)::'lambda'()::operator()() const PatternApplicator.cpp:0:0
#11 0x00005593d6e7cb4b mlir::PatternApplicator::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&, llvm::function_ref, llvm::function_ref, llvm::function_ref) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb585b4b)
#12 0x00005593d6e45c97 (anonymous namespace)::GreedyPatternRewriteDriver::processWorklist() GreedyPatternRewriteDriver.cpp:0:0
#13 0x00005593d6e49f56 mlir::applyPatternsGreedily(mlir::Region&, mlir::FrozenRewritePatternSet const&, mlir::GreedyRewriteConfig, bool*) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb552f56)
#14 0x00005593cdab73c7 (anonymous namespace)::TestLinalgDecomposeOps::runOnOperation() TestLinalgDecomposeOps.cpp:0:0
#15 0x00005593d6ee6f81 mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb5eff81)
#16 0x00005593d6ee7310 mlir::detail::OpToOpPassAdaptor::runPipeline(mlir::OpPassManager&, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int, mlir::PassInstrumentor*, mlir::PassInstrumentation::PipelineParentInfo const*) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb5f0310)
#17 0x00005593d6ee93c4 mlir::PassManager::runPasses(mlir::Operation*, mlir::AnalysisManager) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb5f23c4)
#18 0x00005593d6eea491 mlir::PassManager::run(mlir::Operation*) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb5f3491)
#19 0x00005593cda6af7b performActions(llvm::raw_ostream&, std::shared_ptr const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) MlirOptMain.cpp:0:0
#20 0x00005593cda6babf processBuffer(llvm::raw_ostream&, std::unique_ptr>, llvm::MemoryBufferRef, mlir::MlirOptMainConfig const&, mlir::DialectRegistry&, mlir::SourceMgrDiagnosticVerifierHandler*, llvm::ThreadPoolInterface*) MlirOptMain.cpp:0:0
#21 0x00005593cda6bceb llvm::LogicalResult llvm::function_ref>, llvm::MemoryBufferRef const&, llvm::raw_ostream&)>::callback_fn>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::'lambda'(std::unique_ptr>, llvm::MemoryBufferRef, llvm::raw_ostream&)>(long, std::unique_ptr>, llvm::MemoryBufferRef const&, llvm::raw_ostream&) MlirOptMain.cpp:0:0
#22 0x00005593d72cee55 mlir::splitAndProcessBuffer(std::unique_ptr>, llvm::function_ref>, llvm::MemoryBufferRef const&, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0xb9d7e55)
#23 0x00005593cda61d34 mlir::MlirOptMain(llvm::raw_ostream&, std::unique_ptr>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) (.part.0) MlirOptMain.cpp:0:0
#24 0x00005593cda6c207 mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x2175207)
#25 0x00005593cda6c443 mlir::MlirOptMain(int, char**, llvm::StringRef, mlir::DialectRegistry&) (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x2175443)
#26 0x00005593cd90b9e7 main (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x20149e7)
#27 0x00007f43c5e43083 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24083)
#28 0x00005593cd98148e _start (/data2/dependency/dev/llvm-project/build/bin/mlir-opt+0x208a48e)
Aborted (core dumped)
```
Contributor guide
Research direction
Start with the reproducer and run `mlir-opt -test-linalg-decompose-ops a.mlir` to confirm the crash. Read `mlir/lib/Dialect/Linalg/Transforms/DecomposeLinalgOps.cpp` around line 363 and the `TestLinalgDecomposeOps.cpp` entry point. Done means the supplied MLIR input no longer triggers the assertion and regression coverage preserves that behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 66/100