================
@@ -246,21 +312,28 @@ ABIArgInfo AMDGPUABIInfo::classifyArgumentType(QualType
Ty, bool Variadic,
RD && RD->hasFlexibleArrayMember())
return DefaultABIInfo::classifyArgumentType(Ty);
- // Pack aggregates <= 8 bytes into single VGPR or pair.
+ // Pack aggregates <= 8 bytes into single VGPR or pair, but only if they
+ // contain sub-32-bit integer types. Aggregates with floats or full-sized
+ // integers (i32, i64) should preserve their original types.
uint64_t Size = getContext().getTypeSize(Ty);
if (Size <= 64) {
- unsigned NumRegs = (Size + 31) / 32;
- NumRegsLeft -= std::min(NumRegsLeft, NumRegs);
+ const auto *RD = Ty->getAsRecordDecl();
----------------
shiltian wrote:
same here
https://github.com/llvm/llvm-project/pull/185083
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