[Mlir-commits] [mlir] Fix #177829 mlir-opt --convert-vector-to-llvm crashes on vector.insert with out-of-bounds index (PR #179116)
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Sun Feb 1 08:20:17 PST 2026
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git-clang-format --diff origin/main HEAD --extensions cpp -- mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp --diff_from_common_commit
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``````````diff
diff --git a/mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp b/mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp
index b404260be..a1132a937 100644
--- a/mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp
+++ b/mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp
@@ -1237,23 +1237,25 @@ public:
ArrayRef<OpFoldResult> positionOf1DVectorWithinAggregate(
positionVec.begin(),
insertIntoInnermostDim ? positionVec.size() - 1 : positionVec.size());
-
+
if (isNestedAggregate) {
std::optional<SmallVector<int64_t>> maybeAggPos;
maybeAggPos =
mlir::getConstantIntValues(positionOf1DVectorWithinAggregate);
if (!maybeAggPos) {
return rewriter.notifyMatchFailure(
- insertOp, "non-constant aggregate position for extract/insertvalue");
+ insertOp,
+ "non-constant aggregate position for extract/insertvalue");
}
// Bounds check against the aggregate dimensions we index into.
- for (int64_t i = 0, e = static_cast<int64_t>(maybeAggPos->size()); i < e; ++i) {
+ for (int64_t i = 0, e = static_cast<int64_t>(maybeAggPos->size()); i < e;
+ ++i) {
int64_t idx = (*maybeAggPos)[i];
int64_t dim = destVectorType.getDimSize(i);
if (idx < 0 || idx >= dim) {
- return rewriter.notifyMatchFailure(insertOp,
- "out-of-bounds aggregate position");
+ return rewriter.notifyMatchFailure(
+ insertOp, "out-of-bounds aggregate position");
}
}
}
``````````
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https://github.com/llvm/llvm-project/pull/179116
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