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Fix a problem where early legalization can cause token chain problems.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21885 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-05-12 04:49:08 +00:00
parent 9bce0f92c3
commit b9fa3bc8f3
1 changed files with 8 additions and 7 deletions
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15
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -130,6 +130,8 @@ private:
void ExpandByParts(unsigned NodeOp, SDOperand LHS, SDOperand RHS,
SDOperand &Lo, SDOperand &Hi);
void SpliceCallInto(const SDOperand &CallResult, SDNode *OutChain);
SDOperand getIntPtrConstant(uint64_t Val) {
return DAG.getConstant(Val, TLI.getPointerTy());
}
@ -1271,7 +1273,6 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Node->getOpcode() == ISD::UINT_TO_FP) {
Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP,
Node->getValueType(0), Node->getOperand(0));
Result = LegalizeOp(Result);
break;
} else if (Node->getOpcode() == ISD::TRUNCATE) {
// In the expand case, we must be dealing with a truncate, because
@ -1530,8 +1531,6 @@ SDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) {
case Expand:
Result = ExpandIntToFP(Node->getOpcode() == ISD::SINT_TO_FP, NVT,
Node->getOperand(0));
Result = LegalizeOp(Result);
// Round if we cannot tolerate excess precision.
if (NoExcessFPPrecision)
Result = DAG.getNode(ISD::FP_ROUND_INREG, NVT, Result, VT);
@ -2047,8 +2046,8 @@ static SDOperand FindInputOutputChains(SDNode *OpNode, SDNode *&OutChain,
}
/// SpliceCallInto - Given the result chain of a libcall (CallResult), and a
static void SpliceCallInto(const SDOperand &CallResult, SDNode *OutChain,
SelectionDAG &DAG) {
void SelectionDAGLegalize::SpliceCallInto(const SDOperand &CallResult,
SDNode *OutChain) {
// Nothing to splice it into?
if (OutChain == 0) return;
@ -2087,7 +2086,9 @@ SDOperand SelectionDAGLegalize::ExpandLibCall(const char *Name, SDNode *Node,
const Type *RetTy = MVT::getTypeForValueType(Node->getValueType(0));
std::pair<SDOperand,SDOperand> CallInfo =
TLI.LowerCallTo(InChain, RetTy, false, Callee, Args, DAG);
SpliceCallInto(CallInfo.second, OutChain, DAG);
SpliceCallInto(CallInfo.second, OutChain);
NeedsAnotherIteration = true;
switch (getTypeAction(CallInfo.first.getValueType())) {
default: assert(0 && "Unknown thing");
@ -2176,7 +2177,7 @@ ExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) {
std::pair<SDOperand,SDOperand> CallResult =
TLI.LowerCallTo(InChain, RetTy, false, Callee, Args, DAG);
SpliceCallInto(CallResult.second, OutChain, DAG);
SpliceCallInto(CallResult.second, OutChain);
return CallResult.first;
}