// Otherwise, pass by coercing to a structure of the appropriate size.
//
- // FIXME: This is kind of nasty... but there isn't much choice because the ARM
- // backend doesn't support byval.
// FIXME: This doesn't handle alignment > 64 bits.
llvm::Type* ElemTy;
unsigned SizeRegs;
- if (getContext().getTypeAlign(Ty) > 32) {
- ElemTy = llvm::Type::getInt64Ty(getVMContext());
- SizeRegs = (getContext().getTypeSize(Ty) + 63) / 64;
- } else {
+ if (getContext().getTypeSizeInChars(Ty) <= CharUnits::fromQuantity(64)) {
ElemTy = llvm::Type::getInt32Ty(getVMContext());
SizeRegs = (getContext().getTypeSize(Ty) + 31) / 32;
+ } else if (getABIKind() == ARMABIInfo::APCS) {
+ // Initial ARM ByVal support is APCS-only.
+ return ABIArgInfo::getIndirect(0, /*ByVal=*/true);
+ } else {
+ // FIXME: This is kind of nasty... but there isn't much choice
+ // because most of the ARM calling conventions don't yet support
+ // byval.
+ ElemTy = llvm::Type::getInt64Ty(getVMContext());
+ SizeRegs = (getContext().getTypeSize(Ty) + 63) / 64;
}
llvm::Type *STy =