2022-11-28T00:50:00Z
//todo X17 last argReg
if (RegLo == RMIA::X17) {
// Second half of f64 is passed on the stack.
// Work out the address of the stack slot.
if (!StackPtr.getNode())
//todo X2 sp
StackPtr = DAG.getCopyFromReg(Chain, DL, RMIA::X2, PtrVT);
// Emit the store.
MemOpChains.push_back(
DAG.getStore(Chain, DL, Hi, StackPtr, MachinePointerInfo()));
} else {
// Second half of f64 is passed in another GPR.
assert(RegLo < RMIA::X31 && "Invalid register pair");
Register RegHigh = RegLo + 1;
RegsToPass.push_back(std::make_pair(RegHigh, Hi));
}
