e38c8bdca8
Fix a crash reported in #64331. The crash is described in the following comment: > It looks like the bug is being caused by the command line argument --scf-parallel-loop-tiling=parallel-loop-tile-sizes=0. More specifically, --scf-parallel-loop-tiling=parallel-loop-tile-sizes sets the tileSize variable to 0 on [this line](7cc1bfaf37/mlir/lib/Dialect/SCF/Transforms/ParallelLoopTiling.cpp (L67)). tileSize is then used on [this line](7cc1bfaf37/mlir/lib/Dialect/SCF/Transforms/ParallelLoopTiling.cpp (L117)) causing a divide by zero exception. This PR will: 1. Call `signalPassFail()` when 0 is passed as a tile size. 2. Avoid the divide by zero that causes the crash. Note: This is my first PR for MLIR, so please liberally critique it.
12 lines
481 B
MLIR
12 lines
481 B
MLIR
// RUN: mlir-opt %s -pass-pipeline='builtin.module(func.func(scf-parallel-loop-tiling{parallel-loop-tile-sizes=0,0}))' -split-input-file -verify-diagnostics
|
|
|
|
// The expected error is, "tile size cannot be 0" at an unknown location. (It's
|
|
// location is unknown because the it's caused by an invalid command line
|
|
// argument.)
|
|
// XFAIL: *
|
|
|
|
func.func @parallel_loop(%arg0 : index, %arg1 : index, %arg2 : index) {
|
|
scf.parallel (%i) = (%arg0) to (%arg1) step (%arg2) {}
|
|
return
|
|
}
|