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Implemented the frameaddress intrinsic for PPC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34787 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nicolas Geoffray 2007-03-01 13:11:38 +00:00
parent a81a5ab357
commit 43c6e7cd9b
2 changed files with 25 additions and 1 deletions
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24
lib/Target/PowerPC/PPCISelLowering.cpp
View File

@ -2700,7 +2700,7 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
// Frame & Return address. Currently unimplemented
case ISD::RETURNADDR: break;
case ISD::FRAMEADDR: break;
case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG);
}
return SDOperand();
}
@ -3171,3 +3171,25 @@ bool PPCTargetLowering::isLegalAddressImmediate(int64_t V) const {
bool PPCTargetLowering::isLegalAddressImmediate(llvm::GlobalValue* GV) const {
return TargetLowering::isLegalAddressImmediate(GV);
}
SDOperand PPCTargetLowering::LowerFRAMEADDR(SDOperand Op, SelectionDAG &DAG)
{
// Depths > 0 not supported yet!
if (cast<ConstantSDNode>(Op.getOperand(0))->getValue() > 0)
return SDOperand();
MVT::ValueType PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
bool isPPC64 = PtrVT == MVT::i64;
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
bool is31 = (NoFramePointerElim || MFI->hasVarSizedObjects())
&& MFI->getStackSize();
if (isPPC64)
return DAG.getCopyFromReg(DAG.getEntryNode(), is31 ? PPC::X31 : PPC::X1,
MVT::i32);
else
return DAG.getCopyFromReg(DAG.getEntryNode(), is31 ? PPC::R31 : PPC::R1,
MVT::i32);
}

2
lib/Target/PowerPC/PPCISelLowering.h
View File

@ -240,6 +240,8 @@ namespace llvm {
/// as the offset of the target addressing mode.
virtual bool isLegalAddressImmediate(int64_t V) const;
virtual bool isLegalAddressImmediate(llvm::GlobalValue*) const;
SDOperand LowerFRAMEADDR(SDOperand Op, SelectionDAG &DAG);
};
}