================
@@ -4439,6 +4448,68 @@ bool ExtVectorElementExpr::containsDuplicateElements()
const {
return false;
}
+/// containsDuplicateElements - Return true if any Matrix element access is
+/// repeated.
+bool MatrixElementExpr::containsDuplicateElements() const {
+ StringRef Comp = Accessor->getName();
+ assert(!Comp.empty() && Comp[0] == '_' && "invalid matrix accessor");
+
+ // Get the matrix type so we know bounds.
+ const ConstantMatrixType *MT =
+ getBase()->getType()->getAs<ConstantMatrixType>();
+ assert(MT && "MatrixElementExpr base must be a matrix type");
+
+ unsigned Rows = MT->getNumRows();
+ unsigned Cols = MT->getNumColumns();
+ unsigned Max = Rows * Cols;
+
+ // Zero-indexed: _mRC (4 chars per component)
+ // One-indexed: _RC (3 chars per component)
+ bool IsZeroIndexed = false;
+ unsigned ChunkLen = 0;
+
+ if (Comp.size() >= 2 && Comp[0] == '_' && Comp[1] == 'm') {
+ IsZeroIndexed = true;
+ ChunkLen = 4;
+ } else {
+ IsZeroIndexed = false;
+ ChunkLen = 3;
+ }
+
+ assert(ChunkLen && "unrecognized matrix swizzle format");
----------------
hekota wrote:
This assert will never fire. `ChunkLen` is always assigned `3` or `4`.
https://github.com/llvm/llvm-project/pull/171225
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