================
@@ -337,12 +350,77 @@ CharUnits
PPC32_SVR4_ABIInfo::getParamTypeAlignment(QualType Ty) const {
return CharUnits::fromQuantity(4);
}
+ABIArgInfo PPC32_SVR4_ABIInfo::handleComplex(QualType Ty,
+ uint64_t &TypeSize) const {
+
+ assert(Ty->isAnyComplexType());
+ llvm::Type *ElemTy;
+ unsigned SizeRegs;
+
+ if (TypeSize == 64) {
+ ElemTy = llvm::Type::getInt64Ty(getVMContext());
+ SizeRegs = 1;
+ } else {
+ ElemTy = llvm::Type::getInt32Ty(getVMContext());
+ SizeRegs = (TypeSize + 31) / 32;
+ }
+ return ABIArgInfo::getDirect(llvm::ArrayType::get(ElemTy, SizeRegs));
+}
+
+ABIArgInfo PPC32_SVR4_ABIInfo::classifyArgumentType(QualType Ty,
+ int &ArgGPRsLeft) const {
+
+ assert(ArgGPRsLeft <= NumArgGPRs && "Arg GPR tracking underflow");
+ Ty = useFirstFieldIfTransparentUnion(Ty);
+
+ ASTContext &Context = getContext();
+
+ uint64_t TypeSize = Context.getTypeSize(Ty);
+
+ if (isComplexInRegABI && Ty->isAnyComplexType() &&
+ TypeSize <= RLen * ArgGPRsLeft) {
+ ArgGPRsLeft -= TypeSize / RLen;
+ return handleComplex(Ty, TypeSize);
+ }
+
+ if (isAggregateTypeForABI(Ty)) {
+ if (ArgGPRsLeft)
+ ArgGPRsLeft -= 1;
+ // Records with non-trivial destructors/copy-constructors should not be
+ // passed by value.
+ if (CGCXXABI::RecordArgABI RAA = getRecordArgABI(Ty, getCXXABI())) {
+ return getNaturalAlignIndirect(Ty, RAA == CGCXXABI::RAA_DirectInMemory);
+ }
+ return getNaturalAlignIndirect(Ty);
+ }
+
+ if (!Ty->isFloatingType()) {
+ if (TypeSize > RLen && TypeSize <= 2 * RLen)
+ ArgGPRsLeft -= 2;
+ else
+ ArgGPRsLeft--;
----------------
diggerlin wrote:
There is a bug here, you decrease the ArgGPRsLeft no mater whether ArgGPRsLeft
>0;
I think you can put after `Ty = useFirstFieldIfTransparentUnion(Ty);`
```
Ty = useFirstFieldIfTransparentUnion(Ty);
if(Ty->isFloatingType()) return;
```
and change the code here as
```
if(TypeSize <= RLen * ArgGPRsLeft)
ArgGPRsLeft -= TypeSize / RLen;
```
https://github.com/llvm/llvm-project/pull/77732
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