================
@@ -2471,17 +2471,27 @@ RValue CodeGenFunction::EmitLoadOfLValue(LValue LV,
SourceLocation Loc) {
unsigned NumRows = MT->getNumRows();
unsigned NumCols = MT->getNumColumns();
-
+ unsigned NumLanes = NumCols;
llvm::Value *MatrixVec = EmitLoadOfScalar(LV, Loc);
llvm::Value *Row = LV.getMatrixRowIdx();
llvm::Type *ElemTy = ConvertType(MT->getElementType());
llvm::Type *RowTy = llvm::FixedVectorType::get(ElemTy,
MT->getNumColumns());
llvm::Value *Result = llvm::PoisonValue::get(RowTy); // <NumCols x T>
----------------
hekota wrote:
```suggestion
llvm::Value *Result = nullptr; // will be <NumLanes x T> once NumLanes is
known
```
The `Result` value needs to be created later since its vector size depends on
the swizzle element count.
https://github.com/llvm/llvm-project/pull/173201
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