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Make the function begin label start after ther data pointer.

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The address of data frame for function can be obtained by subtracting 2 from the function begin label.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69801 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjiv Gupta
2009-04-22 12:02:36 +00:00
parent 4a0adb7686
commit dd92dba644
3 changed files with 12 additions and 9 deletions
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16
lib/Target/PIC16/PIC16ISelLowering.cpp
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@@ -1155,10 +1155,12 @@ GetDataAddress(DebugLoc dl, SDValue Callee, SDValue &Chain,
SDValue Lo = Callee.getOperand(0);
SDValue Hi = Callee.getOperand(1);
SDValue Data_Lo, Data_Hi;
SDVTList Tys = DAG.getVTList(MVT::i8, MVT::Other, MVT::Flag);
Hi = DAG.getNode(PIC16ISD::MTPCLATH, dl, MVT::i8, Hi);
// Use the Lo part as is and make CALLW
Callee = DAG.getNode(PIC16ISD::PIC16Connect, dl, MVT::i8, Lo, Hi);
// Subtract 2 from Lo to get the Lower part of DataAddress.
Data_Lo = DAG.getNode(ISD::SUB, dl, MVT::i8, Lo, DAG.getConstant(2, MVT::i8));
Callee = DAG.getNode(PIC16ISD::PIC16Connect, dl, MVT::i8, Data_Lo, Hi);
SDValue Call = DAG.getNode(PIC16ISD::CALLW, dl, Tys, Chain, Callee,
OperFlag);
Chain = getChain(Call);
@@ -1176,10 +1178,10 @@ GetDataAddress(DebugLoc dl, SDValue Callee, SDValue &Chain,
Chain = getChain(SeqStart);
OperFlag = getOutFlag(SeqStart); // To manage the data dependency
// Add 1 to Lo part for the second code word.
Lo = DAG.getNode(ISD::ADD, dl, MVT::i8, Lo, DAG.getConstant(1, MVT::i8));
// Subtract 1 to Lo part for the second code word.
Data_Lo = DAG.getNode(ISD::SUB, dl, MVT::i8, Lo, DAG.getConstant(1, MVT::i8));
// Use new Lo to make another CALLW
Callee = DAG.getNode(PIC16ISD::PIC16Connect, dl, MVT::i8, Lo, Hi);
Callee = DAG.getNode(PIC16ISD::PIC16Connect, dl, MVT::i8, Data_Lo, Hi);
Call = DAG.getNode(PIC16ISD::CALLW, dl, Tys, Chain, Callee, OperFlag);
Chain = getChain(Call);
OperFlag = getOutFlag(Call);
@@ -1266,8 +1268,8 @@ SDValue PIC16TargetLowering::LowerCALL(SDValue Op, SelectionDAG &DAG) {
SDValue CodeAddr_Lo = Callee.getOperand(0);
SDValue CodeAddr_Hi = Callee.getOperand(1);
CodeAddr_Lo = DAG.getNode(ISD::ADD, dl, MVT::i8, CodeAddr_Lo,
DAG.getConstant(2, MVT::i8));
/*CodeAddr_Lo = DAG.getNode(ISD::ADD, dl, MVT::i8, CodeAddr_Lo,
DAG.getConstant(2, MVT::i8));*/
// move Hi part in PCLATH
CodeAddr_Hi = DAG.getNode(PIC16ISD::MTPCLATH, dl, MVT::i8, CodeAddr_Hi);