================
@@ -82,3 +89,123 @@ bool TargetInfo::maybeCommonClassifyReturnType(FunctionInfo
&FI) const {
return false;
}
+
+namespace {
+
+bool isEmptyRecordForHA(const Type *Ty) {
+ const auto *RT = dyn_cast<RecordType>(Ty);
+ return RT && RT->isEmpty();
+}
+
+/// Storage-container width mirroring Clang's ASTContext::getTypeSize for the
+/// types that matter to homogeneous-aggregate detection.
+uint64_t getHATypeSizeInBits(const Type *Ty) {
+ if (const auto *VT = dyn_cast<VectorType>(Ty)) {
+ uint64_t EltWidth = VT->getElementType()->getSizeInBits().getFixedValue();
+ uint64_t Width = std::max<uint64_t>(
+ 8, EltWidth * VT->getNumElements().getKnownMinValue());
+ if (Width & (Width - 1))
+ Width = alignTo(Width, bit_ceil(Width));
+ return Width;
+ }
+ return Ty->getSizeInBits().getFixedValue();
+}
+
+} // namespace
+
+bool TargetInfo::isHomogeneousAggregate(const Type *Ty, const Type *&Base,
+ uint64_t &Members) const {
----------------
madhur13490 wrote:
`QualTypeMapper` maps a `ConstantMatrixType` to an `ArrayType` with
`IsMatrix=true (QualTypeMapper.cpp:105-110)`, and this branch doesn't skip it.
So `struct { float m __attribute__((matrix_type(2,2))); }` is treated as a
4-member float `HFA. isAggregateTypeForABI` already special-cases matrices
(`TargetInfo.cpp:28-30)`; the same guard `(if (AT->isMatrixType()) return
false;)` is needed here. Classic CodeGen returns that struct as [2 x i64], not
a direct HFA.
https://github.com/llvm/llvm-project/pull/218799
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