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Pass the correct values to the chain argument for node construction during

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LowerCallTo.
Handle ISD::ADD in SelectAddr, allowing us to have nonzero immediates for
loads and stores, amazing!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20946 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman 2005-03-31 02:05:53 +00:00
parent 74d734574e
commit 96fc681d7e
1 changed files with 14 additions and 6 deletions
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20
lib/Target/PowerPC/PPCISelPattern.cpp
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@ -321,21 +321,22 @@ PPC32TargetLowering::LowerCallTo(SDOperand Chain,
case MVT::f64:
if (FPR_remaining > 0) {
if (isVarArg) {
MemOps.push_back(DAG.getNode(ISD::STORE, MVT::Other, Chain,
Args[i].first, PtrOff));
SDOperand Store = DAG.getNode(ISD::STORE, MVT::Other, Chain,
Args[i].first, PtrOff);
MemOps.push_back(Store);
// Float varargs are always shadowed in available integer registers
if (GPR_remaining > 0) {
SDOperand Load = DAG.getLoad(MVT::i32, Chain, PtrOff);
SDOperand Load = DAG.getLoad(MVT::i32, Store, PtrOff);
MemOps.push_back(Load);
args_to_use.push_back(DAG.getCopyToReg(Chain, Load,
args_to_use.push_back(DAG.getCopyToReg(Load, Load,
GPR[GPR_idx]));
}
if (GPR_remaining > 1 && MVT::f64 == ArgVT) {
SDOperand ConstFour = DAG.getConstant(4, getPointerTy());
PtrOff = DAG.getNode(ISD::ADD, MVT::i32, PtrOff, ConstFour);
SDOperand Load = DAG.getLoad(MVT::i32, Chain, PtrOff);
SDOperand Load = DAG.getLoad(MVT::i32, Store, PtrOff);
MemOps.push_back(Load);
args_to_use.push_back(DAG.getCopyToReg(Chain, Load,
args_to_use.push_back(DAG.getCopyToReg(Load, Load,
GPR[GPR_idx+1]));
}
}
@ -521,6 +522,13 @@ unsigned ISel::getGlobalBaseReg() {
//Check to see if the load is a constant offset from a base register
void ISel::SelectAddr(SDOperand N, unsigned& Reg, int& offset)
{
unsigned imm = 0, opcode = N.getOpcode();
if (N.getOpcode() == ISD::ADD)
if (1 == canUseAsImmediateForOpcode(N.getOperand(1), opcode, imm)) {
Reg = SelectExpr(N.getOperand(0));
offset = imm;
return;
}
Reg = SelectExpr(N);
offset = 0;
return;