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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124827 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick 2011-02-03 23:00:17 +00:00
parent 042b27f40e
commit cd5af07c45
1 changed files with 18 additions and 18 deletions
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36
lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
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@ -86,7 +86,7 @@ SUnit *ScheduleDAGSDNodes::Clone(SUnit *Old) {
/// a specified operand is a physical register dependency. If so, returns the
/// register and the cost of copying the register.
static void CheckForPhysRegDependency(SDNode *Def, SDNode *User, unsigned Op,
const TargetRegisterInfo *TRI,
const TargetRegisterInfo *TRI,
const TargetInstrInfo *TII,
unsigned &PhysReg, int &Cost) {
if (Op != 2 || User->getOpcode() != ISD::CopyToReg)
@ -266,33 +266,33 @@ void ScheduleDAGSDNodes::BuildSchedUnits() {
// FIXME: Multiply by 2 because we may clone nodes during scheduling.
// This is a temporary workaround.
SUnits.reserve(NumNodes * 2);
// Add all nodes in depth first order.
SmallVector<SDNode*, 64> Worklist;
SmallPtrSet<SDNode*, 64> Visited;
Worklist.push_back(DAG->getRoot().getNode());
Visited.insert(DAG->getRoot().getNode());
while (!Worklist.empty()) {
SDNode *NI = Worklist.pop_back_val();
// Add all operands to the worklist unless they've already been added.
for (unsigned i = 0, e = NI->getNumOperands(); i != e; ++i)
if (Visited.insert(NI->getOperand(i).getNode()))
Worklist.push_back(NI->getOperand(i).getNode());
if (isPassiveNode(NI)) // Leaf node, e.g. a TargetImmediate.
continue;
// If this node has already been processed, stop now.
if (NI->getNodeId() != -1) continue;
SUnit *NodeSUnit = NewSUnit(NI);
// See if anything is glued to this node, if so, add them to glued
// nodes. Nodes can have at most one glue input and one glue output. Glue
// is required to be the last operand and result of a node.
// Scan up to find glued preds.
SDNode *N = NI;
while (N->getNumOperands() &&
@ -303,15 +303,15 @@ void ScheduleDAGSDNodes::BuildSchedUnits() {
if (N->isMachineOpcode() && TII->get(N->getMachineOpcode()).isCall())
NodeSUnit->isCall = true;
}
// Scan down to find any glued succs.
N = NI;
while (N->getValueType(N->getNumValues()-1) == MVT::Glue) {
SDValue GlueVal(N, N->getNumValues()-1);
// There are either zero or one users of the Glue result.
bool HasGlueUse = false;
for (SDNode::use_iterator UI = N->use_begin(), E = N->use_end();
for (SDNode::use_iterator UI = N->use_begin(), E = N->use_end();
UI != E; ++UI)
if (GlueVal.isOperandOf(*UI)) {
HasGlueUse = true;
@ -324,7 +324,7 @@ void ScheduleDAGSDNodes::BuildSchedUnits() {
}
if (!HasGlueUse) break;
}
// If there are glue operands involved, N is now the bottom-most node
// of the sequence of nodes that are glued together.
// Update the SUnit.
@ -347,7 +347,7 @@ void ScheduleDAGSDNodes::AddSchedEdges() {
for (unsigned su = 0, e = SUnits.size(); su != e; ++su) {
SUnit *SU = &SUnits[su];
SDNode *MainNode = SU->getNode();
if (MainNode->isMachineOpcode()) {
unsigned Opc = MainNode->getMachineOpcode();
const TargetInstrDesc &TID = TII->get(Opc);
@ -360,7 +360,7 @@ void ScheduleDAGSDNodes::AddSchedEdges() {
if (TID.isCommutable())
SU->isCommutable = true;
}
// Find all predecessors and successors of the group.
for (SDNode *N = SU->getNode(); N; N = N->getGluedNode()) {
if (N->isMachineOpcode() &&
@ -372,7 +372,7 @@ void ScheduleDAGSDNodes::AddSchedEdges() {
if (NumUsed > TII->get(N->getMachineOpcode()).getNumDefs())
SU->hasPhysRegDefs = true;
}
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
SDNode *OpN = N->getOperand(i).getNode();
if (isPassiveNode(OpN)) continue; // Not scheduled.
@ -437,7 +437,7 @@ void ScheduleDAGSDNodes::ComputeLatency(SUnit *SU) {
SU->Latency = 1;
return;
}
// Compute the latency for the node. We use the sum of the latencies for
// all nodes glued together into this SUnit.
SU->Latency = 0;
@ -502,7 +502,7 @@ namespace {
}
/// ProcessSDDbgValues - Process SDDbgValues assoicated with this node.
static void ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG,
static void ProcessSDDbgValues(SDNode *N, SelectionDAG *DAG,
InstrEmitter &Emitter,
SmallVector<std::pair<unsigned, MachineInstr*>, 32> &Orders,
DenseMap<SDValue, unsigned> &VRBaseMap,