================
@@ -337,12 +347,58 @@ CharUnits
PPC32_SVR4_ABIInfo::getParamTypeAlignment(QualType Ty) const {
return CharUnits::fromQuantity(4);
}
+ABIArgInfo PPC32_SVR4_ABIInfo::handleComplex(uint64_t &TypeSize) const {
+ llvm::Type *ElemTy;
+ unsigned RegsNeeded; // Registers Needed for Complex.
+
+ if (TypeSize == 64) {
+ ElemTy = llvm::Type::getInt64Ty(getVMContext());
+ RegsNeeded = 1;
+ } else {
+ ElemTy = llvm::Type::getInt32Ty(getVMContext());
+ RegsNeeded = (TypeSize + 31) / 32;
+ }
+ return ABIArgInfo::getDirect(llvm::ArrayType::get(ElemTy, RegsNeeded));
+}
+
+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 <= RegLen * ArgGPRsLeft) {
+ assert(Ty->isAnyComplexType() && "Ty must be Complex type.");
+ ArgGPRsLeft -= TypeSize / RegLen;
+ return handleComplex(TypeSize);
+ }
+
+ if (ArgGPRsLeft) {
+ // Records with non-trivial destructors/copy-constructors should not be
+ // passed by value.
+ if (isAggregateTypeForABI(Ty))
+ ArgGPRsLeft -= 1;
+ else if (!Ty->isFloatingType()) {
+ // For other premitive types.
+ if (TypeSize > RegLen && TypeSize <= 2 * RegLen)
+ ArgGPRsLeft -= TypeSize / RegLen;
----------------
Long5hot wrote:
Yes, gcc passes the last arg in stack
https://godbolt.org/z/EbPMK4jad
https://github.com/llvm/llvm-project/pull/77732
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