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Make several cleanups to Andrews varargs change:

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1. Pass Value*'s into lowering methods so that the proper pointers can be
   added to load/stores from the valist
2. Intrinsics that return void should only return a token chain, not a token
   chain/retval pair.
3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone.
4. Now that we have Value*'s available in the lowering methods, pass them
   into any load/stores from the valist that are emitted


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22339 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-07-05 19:58:54 +00:00
parent e64e72b794
commit e0fe225e89
4 changed files with 90 additions and 120 deletions
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43
lib/Target/IA64/IA64ISelPattern.cpp
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@@ -113,16 +113,11 @@ namespace {
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerVAStart(SDOperand Chain, SelectionDAG &DAG, SDOperand Dest);
virtual SDOperand LowerVAStart(SDOperand Chain, SDOperand VAListP,
Value *VAListV, SelectionDAG &DAG);
virtual std::pair<SDOperand,SDOperand>
LowerVAArgNext(SDOperand Chain, SDOperand VAList,
const Type *ArgTy, SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerFrameReturnAddress(bool isFrameAddr, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG);
LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
const Type *ArgTy, SelectionDAG &DAG);
void restoreGP_SP_RP(MachineBasicBlock* BB)
{
@@ -379,21 +374,24 @@ IA64TargetLowering::LowerCallTo(SDOperand Chain,
return std::make_pair(TheCall, Chain);
}
std::pair<SDOperand, SDOperand>
IA64TargetLowering::LowerVAStart(SDOperand Chain, SelectionDAG &DAG, SDOperand Dest) {
SDOperand
IA64TargetLowering::LowerVAStart(SDOperand Chain, SDOperand VAListP,
Value *VAListV, SelectionDAG &DAG) {
// vastart just stores the address of the VarArgsFrameIndex slot.
SDOperand FR = DAG.getFrameIndex(VarArgsFrameIndex, MVT::i64);
SDOperand Result = DAG.getNode(ISD::STORE, MVT::Other, Chain, FR, Dest, DAG.getSrcValue(NULL));
return std::make_pair(Result, Result);
return DAG.getNode(ISD::STORE, MVT::Other, Chain, FR,
VAListP, DAG.getSrcValue(VAListV));
}
std::pair<SDOperand,SDOperand> IA64TargetLowering::
LowerVAArgNext(SDOperand Chain, SDOperand VAList,
const Type *ArgTy, SelectionDAG &DAG) {
LowerVAArg(SDOperand Chain, SDOperand VAListP, Value *VAListV,
const Type *ArgTy, SelectionDAG &DAG) {
MVT::ValueType ArgVT = getValueType(ArgTy);
SDOperand Val = DAG.getLoad(MVT::i64, Chain, VAList, DAG.getSrcValue(NULL));
SDOperand Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), Val, DAG.getSrcValue(NULL));
SDOperand Val = DAG.getLoad(MVT::i64, Chain,
VAListP, DAG.getSrcValue(VAListV));
SDOperand Result = DAG.getLoad(ArgVT, DAG.getEntryNode(), Val,
DAG.getSrcValue(NULL));
unsigned Amt;
if (ArgVT == MVT::i32 || ArgVT == MVT::f32)
Amt = 8;
@@ -405,19 +403,10 @@ LowerVAArgNext(SDOperand Chain, SDOperand VAList,
Val = DAG.getNode(ISD::ADD, Val.getValueType(), Val,
DAG.getConstant(Amt, Val.getValueType()));
Chain = DAG.getNode(ISD::STORE, MVT::Other, Chain,
Val, VAList, DAG.getSrcValue(NULL));
Val, VAListP, DAG.getSrcValue(VAListV));
return std::make_pair(Result, Chain);
}
std::pair<SDOperand, SDOperand> IA64TargetLowering::
LowerFrameReturnAddress(bool isFrameAddress, SDOperand Chain, unsigned Depth,
SelectionDAG &DAG) {
assert(0 && "LowerFrameReturnAddress not done yet\n");
abort();
}
namespace {
//===--------------------------------------------------------------------===//