================
@@ -7192,6 +7190,25 @@ void CodeGenFunction::FlattenAccessAndTypeLValue(
Base.getBaseInfo(), TBAAAccessInfo());
AccessList.emplace_back(LV);
}
+ } else if (const auto *MT = dyn_cast<ConstantMatrixType>(T)) {
+ // Matrices are represented as flat arrays in memory, but has a vector
+ // value type. So we use ConvertMatrixAddress to convert the address from
+ // array to vector, and extract elements similar to the vector case
above.
+ // The order in which we iterate over the elements is sequentially in
+ // memory; whether the matrix is in row- or column-major order does not
+ // matter.
----------------
Icohedron wrote:
Actually yes, I think you are correct. This is a Clang issue and the library
shader example for DXC is incorrect.
https://github.com/llvm/llvm-project/pull/177708
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