return FPR;
}
-SDOperand PPCTargetLowering::LowerFORMAL_ARGUMENTS(SDOperand Op,
- SelectionDAG &DAG,
- int &VarArgsFrameIndex,
- int &VarArgsStackOffset,
- unsigned &VarArgsNumGPR,
- unsigned &VarArgsNumFPR,
- const PPCSubtarget &Subtarget) {
+SDOperand
+PPCTargetLowering::LowerFORMAL_ARGUMENTS(SDOperand Op,
+ SelectionDAG &DAG,
+ int &VarArgsFrameIndex,
+ int &VarArgsStackOffset,
+ unsigned &VarArgsNumGPR,
+ unsigned &VarArgsNumFPR,
+ const PPCSubtarget &Subtarget) {
// TODO: add description of PPC stack frame format, or at least some docs.
//
MachineFunction &MF = DAG.getMachineFunction();
switch (ObjectVT) {
default: assert(0 && "Unhandled argument type!");
case MVT::i32:
- // Double word align in ELF
- if (Expand && isELF32_ABI) GPR_idx += (GPR_idx % 2);
- if (GPR_idx != Num_GPR_Regs) {
- unsigned VReg = RegInfo.createVirtualRegister(&PPC::GPRCRegClass);
- RegInfo.addLiveIn(GPR[GPR_idx], VReg);
- ArgVal = DAG.getCopyFromReg(Root, VReg, MVT::i32);
- ++GPR_idx;
- } else {
- needsLoad = true;
- ArgSize = PtrByteSize;
+ if (!isPPC64) {
+ // Double word align in ELF
+ if (Expand && isELF32_ABI) GPR_idx += (GPR_idx % 2);
+
+ if (GPR_idx != Num_GPR_Regs) {
+ unsigned VReg = RegInfo.createVirtualRegister(&PPC::GPRCRegClass);
+ RegInfo.addLiveIn(GPR[GPR_idx], VReg);
+ ArgVal = DAG.getCopyFromReg(Root, VReg, MVT::i32);
+ ++GPR_idx;
+ } else {
+ needsLoad = true;
+ ArgSize = PtrByteSize;
+ }
+ // Stack align in ELF
+ if (needsLoad && Expand && isELF32_ABI)
+ ArgOffset += ((ArgOffset/4) % 2) * PtrByteSize;
+ // All int arguments reserve stack space in Macho ABI.
+ if (isMachoABI || needsLoad) ArgOffset += PtrByteSize;
+ break;
}
- // Stack align in ELF
- if (needsLoad && Expand && isELF32_ABI)
- ArgOffset += ((ArgOffset/4) % 2) * PtrByteSize;
- // All int arguments reserve stack space in Macho ABI.
- if (isMachoABI || needsLoad) ArgOffset += PtrByteSize;
- break;
-
+ // FALLTHROUGH
case MVT::i64: // PPC64
if (GPR_idx != Num_GPR_Regs) {
unsigned VReg = RegInfo.createVirtualRegister(&PPC::G8RCRegClass);
RegInfo.addLiveIn(GPR[GPR_idx], VReg);
ArgVal = DAG.getCopyFromReg(Root, VReg, MVT::i64);
+
+ if (ObjectVT == MVT::i32) {
+ // PPC64 passes i8, i16, and i32 values in i64 registers. Promote
+ // value to MVT::i64 and then truncate to the correct register size.
+ if (Flags & ISD::ParamFlags::SExt)
+ ArgVal = DAG.getNode(ISD::AssertSext, MVT::i64, ArgVal,
+ DAG.getValueType(ObjectVT));
+ else if (Flags & ISD::ParamFlags::ZExt)
+ ArgVal = DAG.getNode(ISD::AssertZext, MVT::i64, ArgVal,
+ DAG.getValueType(ObjectVT));
+
+ ArgVal = DAG.getNode(ISD::TRUNCATE, MVT::i32, ArgVal);
+ }
+
++GPR_idx;
} else {
needsLoad = true;
/// does not fit in registers.
static SDOperand
CreateCopyOfByValArgument(SDOperand Src, SDOperand Dst, SDOperand Chain,
- unsigned Flags, SelectionDAG &DAG, unsigned Size) {
+ unsigned Flags, SelectionDAG &DAG, unsigned Size) {
unsigned Align = 1 <<
((Flags & ISD::ParamFlags::ByValAlign) >> ISD::ParamFlags::ByValAlignOffs);
SDOperand AlignNode = DAG.getConstant(Align, MVT::i32);
// On PPC64, promote integers to 64-bit values.
if (isPPC64 && Arg.getValueType() == MVT::i32) {
unsigned ExtOp = (Flags & 1) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;
-
Arg = DAG.getNode(ExtOp, MVT::i64, Arg);
}