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Remove some special case hacks for CALLSEQ_*, using UpdateNodeOperands

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instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25780 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-29 07:58:15 +00:00
parent c1857c23f5
commit 70814bc384
2 changed files with 27 additions and 60 deletions
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37
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -589,22 +589,24 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
case ISD::CALLSEQ_START:
case ISD::CALLSEQ_END:
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
// Do not try to legalize the target-specific arguments (#1+)
Tmp2 = Node->getOperand(0);
if (Tmp1 != Tmp2)
Node->setAdjCallChain(Tmp1);
// If this has a flag input, do legalize it.
if (Node->getOperand(Node->getNumOperands()-1).getValueType() == MVT::Flag){
Tmp1 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1));
if (Tmp1 != Node->getOperand(Node->getNumOperands()-1))
Node->setAdjCallFlag(Tmp1);
// Do not try to legalize the target-specific arguments (#1+), except for
// an optional flag input.
if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){
if (Tmp1 != Node->getOperand(0)) {
std::vector<SDOperand> Ops(Node->op_begin(), Node->op_end());
Ops[0] = Tmp1;
Result = DAG.UpdateNodeOperands(Result, Ops);
}
} else {
Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1));
if (Tmp1 != Node->getOperand(0) ||
Tmp2 != Node->getOperand(Node->getNumOperands()-1)) {
std::vector<SDOperand> Ops(Node->op_begin(), Node->op_end());
Ops[0] = Tmp1;
Ops.back() = Tmp2;
Result = DAG.UpdateNodeOperands(Result, Ops);
}
}
// Note that we do not create new CALLSEQ_DOWN/UP nodes here. These
// nodes are treated specially and are mutated in place. This makes the dag
// legalization process more efficient and also makes libcall insertion
// easier.
break;
case ISD::DYNAMIC_STACKALLOC: {
Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain.
@ -2964,7 +2966,10 @@ void SelectionDAGLegalize::SpliceCallInto(const SDOperand &CallResult,
SDOperand InToken = DAG.getNode(ISD::TokenFactor, MVT::Other, CallResult,
OutChain->getOperand(0));
// Change the node to refer to the new token.
OutChain->setAdjCallChain(InToken);
std::vector<SDOperand> Ops(OutChain->op_begin(), OutChain->op_end());
Ops[0] = InToken;
SDOperand Res = DAG.UpdateNodeOperands(SDOperand(OutChain, 0), Ops);
assert(Res.Val == OutChain && "Didn't update in place!");
}

50
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -380,9 +380,7 @@ void SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
// flag result (which cannot be CSE'd) or is one of the special cases that are
// not subject to CSE.
if (!Erased && N->getValueType(N->getNumValues()-1) != MVT::Flag &&
N->getOpcode() != ISD::CALLSEQ_START &&
N->getOpcode() != ISD::CALLSEQ_END && !N->isTargetOpcode()) {
!N->isTargetOpcode()) {
N->dump();
assert(0 && "Node is not in map!");
}
@ -396,9 +394,7 @@ void SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
///
SDNode *SelectionDAG::AddNonLeafNodeToCSEMaps(SDNode *N) {
assert(N->getNumOperands() && "This is a leaf node!");
if (N->getOpcode() == ISD::CALLSEQ_START ||
N->getOpcode() == ISD::CALLSEQ_END ||
N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
if (N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
return 0; // Never add these nodes.
// Check that remaining values produced are not flags.
@ -451,9 +447,7 @@ SDNode *SelectionDAG::AddNonLeafNodeToCSEMaps(SDNode *N) {
/// return null, otherwise return a pointer to the slot it would take. If a
/// node already exists with these operands, the slot will be non-null.
SDNode **SelectionDAG::FindModifiedNodeSlot(SDNode *N, SDOperand Op) {
if (N->getOpcode() == ISD::CALLSEQ_START ||
N->getOpcode() == ISD::CALLSEQ_END ||
N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
if (N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
return 0; // Never add these nodes.
// Check that remaining values produced are not flags.
@ -481,9 +475,7 @@ SDNode **SelectionDAG::FindModifiedNodeSlot(SDNode *N, SDOperand Op) {
/// node already exists with these operands, the slot will be non-null.
SDNode **SelectionDAG::FindModifiedNodeSlot(SDNode *N,
SDOperand Op1, SDOperand Op2) {
if (N->getOpcode() == ISD::CALLSEQ_START ||
N->getOpcode() == ISD::CALLSEQ_END ||
N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
if (N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
return 0; // Never add these nodes.
// Check that remaining values produced are not flags.
@ -512,9 +504,7 @@ SDNode **SelectionDAG::FindModifiedNodeSlot(SDNode *N,
/// node already exists with these operands, the slot will be non-null.
SDNode **SelectionDAG::FindModifiedNodeSlot(SDNode *N,
const std::vector<SDOperand> &Ops) {
if (N->getOpcode() == ISD::CALLSEQ_START ||
N->getOpcode() == ISD::CALLSEQ_END ||
N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
if (N->getOpcode() == ISD::HANDLENODE || N->getValueType(0) == MVT::Flag)
return 0; // Never add these nodes.
// Check that remaining values produced are not flags.
@ -1296,8 +1286,7 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
// Memoize this node if possible.
SDNode *N;
if (Opcode != ISD::CALLSEQ_START && Opcode != ISD::CALLSEQ_END &&
VT != MVT::Flag) {
if (VT != MVT::Flag) {
SDNode *&BON = BinaryOps[std::make_pair(Opcode, std::make_pair(N1, N2))];
if (BON) return SDOperand(BON, 0);
@ -1387,33 +1376,6 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
return getNode(Opcode, VT, Ops);
}
// setAdjCallChain - This method changes the token chain of an
// CALLSEQ_START/END node to be the specified operand.
void SDNode::setAdjCallChain(SDOperand N) {
assert(N.getValueType() == MVT::Other);
assert((getOpcode() == ISD::CALLSEQ_START ||
getOpcode() == ISD::CALLSEQ_END) && "Cannot adjust this node!");
OperandList[0].Val->removeUser(this);
OperandList[0] = N;
OperandList[0].Val->Uses.push_back(this);
}
// setAdjCallFlag - This method changes the flag input of an
// CALLSEQ_START/END node to be the specified operand.
void SDNode::setAdjCallFlag(SDOperand N) {
assert(N.getValueType() == MVT::Flag);
assert((getOpcode() == ISD::CALLSEQ_START ||
getOpcode() == ISD::CALLSEQ_END) && "Cannot adjust this node!");
SDOperand &FlagOp = OperandList[getNumOperands()-1];
assert(FlagOp.getValueType() == MVT::Flag);
FlagOp.Val->removeUser(this);
FlagOp = N;
FlagOp.Val->Uses.push_back(this);
}
SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
SDOperand Chain, SDOperand Ptr,
SDOperand SV) {