if (R->isSubClassOf("SDTCisVT")) {
ConstraintType = SDTCisVT;
x.SDTCisVT_Info.VT = getValueType(R->getValueAsDef("VT"));
+ } else if (R->isSubClassOf("SDTCisPtrTy")) {
+ ConstraintType = SDTCisPtrTy;
} else if (R->isSubClassOf("SDTCisInt")) {
ConstraintType = SDTCisInt;
} else if (R->isSubClassOf("SDTCisFP")) {
case SDTCisVT:
// Operand must be a particular type.
return NodeToApply->UpdateNodeType(x.SDTCisVT_Info.VT, TP);
+ case SDTCisPtrTy: {
+ // Operand must be same as target pointer type.
+ return NodeToApply->UpdateNodeType(CGT.getPointerType(), TP);
+ }
case SDTCisInt: {
// If there is only one integer type supported, this must be it.
std::vector<MVT::ValueType> IntVTs =
if (isLeaf()) {
dump();
+ std::cerr << " ";
TP.error("Type inference contradiction found in node!");
} else {
TP.error("Type inference contradiction found in node " +
} else if (R->isSubClassOf("ValueType") || R->isSubClassOf("CondCode")) {
// Using a VTSDNode or CondCodeSDNode.
return MVT::Other;
- } else if (R->getName() == "node") {
+ } else if (R->isSubClassOf("ComplexPattern")) {
+ return TP.getDAGISelEmitter().getComplexPattern(R).getValueType();
+ } else if (R->getName() == "node" || R->getName() == "srcvalue") {
// Placeholder.
return MVT::isUnknown;
}
for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
if (!getChild(i)->canPatternMatch(Reason, ISE))
return false;
-
+
// If this node is a commutative operator, check that the LHS isn't an
// immediate.
const SDNodeInfo &NodeInfo = ISE.getSDNodeInfo(getOperator());
}
}
+void DAGISelEmitter::ParseComplexPatterns() {
+ std::vector<Record*> AMs = Records.getAllDerivedDefinitions("ComplexPattern");
+ while (!AMs.empty()) {
+ ComplexPatterns.insert(std::make_pair(AMs.back(), AMs.back()));
+ AMs.pop_back();
+ }
+}
/// ParsePatternFragments - Parse all of the PatFrag definitions in the .td
/// HandleUse - Given "Pat" a leaf in the pattern, check to see if it is an
/// instruction input. Return true if this is a real use.
static bool HandleUse(TreePattern *I, TreePatternNode *Pat,
- std::map<std::string, TreePatternNode*> &InstInputs) {
+ std::map<std::string, TreePatternNode*> &InstInputs,
+ std::vector<Record*> &InstImpInputs) {
// No name -> not interesting.
if (Pat->getName().empty()) {
if (Pat->isLeaf()) {
DefInit *DI = dynamic_cast<DefInit*>(Pat->getLeafValue());
if (DI && DI->getDef()->isSubClassOf("RegisterClass"))
I->error("Input " + DI->getDef()->getName() + " must be named!");
-
+ else if (DI && DI->getDef()->isSubClassOf("Register")) {
+ InstImpInputs.push_back(DI->getDef());
+ }
}
return false;
}
Rec = Pat->getOperator();
}
+ // SRCVALUE nodes are ignored.
+ if (Rec->getName() == "srcvalue")
+ return false;
+
TreePatternNode *&Slot = InstInputs[Pat->getName()];
if (!Slot) {
Slot = Pat;
void DAGISelEmitter::
FindPatternInputsAndOutputs(TreePattern *I, TreePatternNode *Pat,
std::map<std::string, TreePatternNode*> &InstInputs,
- std::map<std::string, Record*> &InstResults) {
+ std::map<std::string, Record*> &InstResults,
+ std::vector<Record*> &InstImpInputs,
+ std::vector<Record*> &InstImpResults) {
if (Pat->isLeaf()) {
- bool isUse = HandleUse(I, Pat, InstInputs);
+ bool isUse = HandleUse(I, Pat, InstInputs, InstImpInputs);
if (!isUse && Pat->getTransformFn())
I->error("Cannot specify a transform function for a non-input value!");
return;
for (unsigned i = 0, e = Pat->getNumChildren(); i != e; ++i) {
if (Pat->getChild(i)->getExtType() == MVT::isVoid)
I->error("Cannot have void nodes inside of patterns!");
- FindPatternInputsAndOutputs(I, Pat->getChild(i), InstInputs, InstResults);
+ FindPatternInputsAndOutputs(I, Pat->getChild(i), InstInputs, InstResults,
+ InstImpInputs, InstImpResults);
}
// If this is a non-leaf node with no children, treat it basically as if
// it were a leaf. This handles nodes like (imm).
bool isUse = false;
if (Pat->getNumChildren() == 0)
- isUse = HandleUse(I, Pat, InstInputs);
+ isUse = HandleUse(I, Pat, InstInputs, InstImpInputs);
if (!isUse && Pat->getTransformFn())
I->error("Cannot specify a transform function for a non-input value!");
for (unsigned i = 0; i != NumValues; ++i) {
TreePatternNode *Dest = Pat->getChild(i);
if (!Dest->isLeaf())
- I->error("set destination should be a virtual register!");
+ I->error("set destination should be a register!");
DefInit *Val = dynamic_cast<DefInit*>(Dest->getLeafValue());
if (!Val)
- I->error("set destination should be a virtual register!");
+ I->error("set destination should be a register!");
+
+ if (Val->getDef()->isSubClassOf("RegisterClass")) {
+ if (Dest->getName().empty())
+ I->error("set destination must have a name!");
+ if (InstResults.count(Dest->getName()))
+ I->error("cannot set '" + Dest->getName() +"' multiple times");
+ InstResults[Dest->getName()] = Val->getDef();
+ } else if (Val->getDef()->isSubClassOf("Register")) {
+ InstImpResults.push_back(Val->getDef());
+ } else {
+ I->error("set destination should be a register!");
+ }
- if (!Val->getDef()->isSubClassOf("RegisterClass"))
- I->error("set destination should be a virtual register!");
- if (Dest->getName().empty())
- I->error("set destination must have a name!");
- if (InstResults.count(Dest->getName()))
- I->error("cannot set '" + Dest->getName() +"' multiple times");
- InstResults[Dest->getName()] = Val->getDef();
-
// Verify and collect info from the computation.
FindPatternInputsAndOutputs(I, Pat->getChild(i+NumValues),
- InstInputs, InstResults);
+ InstInputs, InstResults, InstImpInputs, InstImpResults);
+ }
+}
+
+/// NodeHasChain - return true if TreePatternNode has the property
+/// 'hasChain', meaning it reads a ctrl-flow chain operand and writes
+/// a chain result.
+static bool NodeHasChain(TreePatternNode *N, DAGISelEmitter &ISE)
+{
+ if (N->isLeaf()) return false;
+ Record *Operator = N->getOperator();
+ if (!Operator->isSubClassOf("SDNode")) return false;
+
+ const SDNodeInfo &NodeInfo = ISE.getSDNodeInfo(Operator);
+ return NodeInfo.hasProperty(SDNodeInfo::SDNPHasChain);
+}
+
+static bool PatternHasCtrlDep(TreePatternNode *N, DAGISelEmitter &ISE)
+{
+ if (NodeHasChain(N, ISE))
+ return true;
+ else {
+ for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i) {
+ TreePatternNode *Child = N->getChild(i);
+ if (PatternHasCtrlDep(Child, ISE))
+ return true;
+ }
}
+
+ return false;
}
}
// Create and insert the instruction.
+ std::vector<Record*> ImpResults;
+ std::vector<Record*> ImpOperands;
Instructions.insert(std::make_pair(Instrs[i],
- DAGInstruction(0, Results, Operands)));
+ DAGInstruction(0, Results, Operands,
+ ImpResults, ImpOperands)));
continue; // no pattern.
}
// InstResults - Keep track of all the virtual registers that are 'set'
// in the instruction, including what reg class they are.
std::map<std::string, Record*> InstResults;
+
+ std::vector<Record*> InstImpInputs;
+ std::vector<Record*> InstImpResults;
// Verify that the top-level forms in the instruction are of void type, and
// fill in the InstResults map.
" void types");
// Find inputs and outputs, and verify the structure of the uses/defs.
- FindPatternInputsAndOutputs(I, Pat, InstInputs, InstResults);
+ FindPatternInputsAndOutputs(I, Pat, InstInputs, InstResults,
+ InstImpInputs, InstImpResults);
}
// Now that we have inputs and outputs of the pattern, inspect the operands
if (InVal->isLeaf() &&
dynamic_cast<DefInit*>(InVal->getLeafValue())) {
Record *InRec = static_cast<DefInit*>(InVal->getLeafValue())->getDef();
- if (CGI.OperandList[i].Rec != InRec)
+ if (CGI.OperandList[i].Rec != InRec &&
+ !InRec->isSubClassOf("ComplexPattern"))
I->error("Operand $" + OpName +
- "'s register class disagrees between the operand and pattern");
+ "'s register class disagrees between the operand and pattern");
}
Operands.push_back(CGI.OperandList[i].Rec);
new TreePatternNode(I->getRecord(), ResultNodeOperands);
// Create and insert the instruction.
- DAGInstruction TheInst(I, Results, Operands);
+ DAGInstruction TheInst(I, Results, Operands, InstImpResults, InstImpInputs);
Instructions.insert(std::make_pair(I->getRecord(), TheInst));
// Use a temporary tree pattern to infer all types and make sure that the
DAGInstruction &TheInst = II->second;
TreePattern *I = TheInst.getPattern();
if (I == 0) continue; // No pattern.
-
+
if (I->getNumTrees() != 1) {
std::cerr << "CANNOT HANDLE: " << I->getRecord()->getName() << " yet!";
continue;
}
TreePatternNode *Pattern = I->getTree(0);
TreePatternNode *SrcPattern;
- if (TheInst.getNumResults() == 0) {
- SrcPattern = Pattern;
- } else {
- if (Pattern->getOperator()->getName() != "set")
- continue; // Not a set (store or something?)
-
+ if (Pattern->getOperator()->getName() == "set") {
if (Pattern->getNumChildren() != 2)
continue; // Not a set of a single value (not handled so far)
SrcPattern = Pattern->getChild(1)->clone();
+ } else{
+ // Not a set (store or something?)
+ SrcPattern = Pattern;
}
std::string Reason;
if (!SrcPattern->canPatternMatch(Reason, *this))
I->error("Instruction can never match: " + Reason);
+ Record *Instr = II->first;
TreePatternNode *DstPattern = TheInst.getResultPattern();
- PatternsToMatch.push_back(std::make_pair(SrcPattern, DstPattern));
+ PatternsToMatch.
+ push_back(PatternToMatch(Instr->getValueAsListInit("Predicates"),
+ SrcPattern, DstPattern));
+
+ if (PatternHasCtrlDep(Pattern, *this)) {
+ CodeGenInstruction &InstInfo = Target.getInstruction(Instr->getName());
+ InstInfo.hasCtrlDep = true;
+ }
}
}
{
std::map<std::string, TreePatternNode*> InstInputs;
std::map<std::string, Record*> InstResults;
+ std::vector<Record*> InstImpInputs;
+ std::vector<Record*> InstImpResults;
FindPatternInputsAndOutputs(Pattern, Pattern->getOnlyTree(),
- InstInputs, InstResults);
+ InstInputs, InstResults,
+ InstImpInputs, InstImpResults);
}
ListInit *LI = Patterns[i]->getValueAsListInit("ResultInstrs");
if (!Pattern->getOnlyTree()->canPatternMatch(Reason, *this))
Pattern->error("Pattern can never match: " + Reason);
- PatternsToMatch.push_back(std::make_pair(Pattern->getOnlyTree(),
- Result->getOnlyTree()));
+ PatternsToMatch.
+ push_back(PatternToMatch(Patterns[i]->getValueAsListInit("Predicates"),
+ Pattern->getOnlyTree(),
+ Result->getOnlyTree()));
}
}
//
for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i) {
std::vector<TreePatternNode*> Variants;
- GenerateVariantsOf(PatternsToMatch[i].first, Variants, *this);
+ GenerateVariantsOf(PatternsToMatch[i].getSrcPattern(), Variants, *this);
assert(!Variants.empty() && "Must create at least original variant!");
Variants.erase(Variants.begin()); // Remove the original pattern.
continue;
DEBUG(std::cerr << "FOUND VARIANTS OF: ";
- PatternsToMatch[i].first->dump();
+ PatternsToMatch[i].getSrcPattern()->dump();
std::cerr << "\n");
for (unsigned v = 0, e = Variants.size(); v != e; ++v) {
bool AlreadyExists = false;
for (unsigned p = 0, e = PatternsToMatch.size(); p != e; ++p) {
// Check to see if this variant already exists.
- if (Variant->isIsomorphicTo(PatternsToMatch[p].first)) {
+ if (Variant->isIsomorphicTo(PatternsToMatch[p].getSrcPattern())) {
DEBUG(std::cerr << " *** ALREADY EXISTS, ignoring variant.\n");
AlreadyExists = true;
break;
if (AlreadyExists) continue;
// Otherwise, add it to the list of patterns we have.
- PatternsToMatch.push_back(std::make_pair(Variant,
- PatternsToMatch[i].second));
+ PatternsToMatch.
+ push_back(PatternToMatch(PatternsToMatch[i].getPredicates(),
+ Variant, PatternsToMatch[i].getDstPattern()));
}
DEBUG(std::cerr << "\n");
}
+// NodeIsComplexPattern - return true if N is a leaf node and a subclass of
+// ComplexPattern.
+static bool NodeIsComplexPattern(TreePatternNode *N)
+{
+ return (N->isLeaf() &&
+ dynamic_cast<DefInit*>(N->getLeafValue()) &&
+ static_cast<DefInit*>(N->getLeafValue())->getDef()->
+ isSubClassOf("ComplexPattern"));
+}
+
+// NodeGetComplexPattern - return the pointer to the ComplexPattern if N
+// is a leaf node and a subclass of ComplexPattern, else it returns NULL.
+static const ComplexPattern *NodeGetComplexPattern(TreePatternNode *N,
+ DAGISelEmitter &ISE)
+{
+ if (N->isLeaf() &&
+ dynamic_cast<DefInit*>(N->getLeafValue()) &&
+ static_cast<DefInit*>(N->getLeafValue())->getDef()->
+ isSubClassOf("ComplexPattern")) {
+ return &ISE.getComplexPattern(static_cast<DefInit*>(N->getLeafValue())
+ ->getDef());
+ }
+ return NULL;
+}
+
/// getPatternSize - Return the 'size' of this pattern. We want to match large
/// patterns before small ones. This is used to determine the size of a
/// pattern.
-static unsigned getPatternSize(TreePatternNode *P) {
+static unsigned getPatternSize(TreePatternNode *P, DAGISelEmitter &ISE) {
assert(isExtIntegerVT(P->getExtType()) ||
isExtFloatingPointVT(P->getExtType()) ||
- P->getExtType() == MVT::isVoid && "Not a valid pattern node to size!");
+ P->getExtType() == MVT::isVoid ||
+ P->getExtType() == MVT::Flag && "Not a valid pattern node to size!");
unsigned Size = 1; // The node itself.
-
+
+ // FIXME: This is a hack to statically increase the priority of patterns
+ // which maps a sub-dag to a complex pattern. e.g. favors LEA over ADD.
+ // Later we can allow complexity / cost for each pattern to be (optionally)
+ // specified. To get best possible pattern match we'll need to dynamically
+ // calculate the complexity of all patterns a dag can potentially map to.
+ const ComplexPattern *AM = NodeGetComplexPattern(P, ISE);
+ if (AM)
+ Size += AM->getNumOperands();
+
// Count children in the count if they are also nodes.
for (unsigned i = 0, e = P->getNumChildren(); i != e; ++i) {
TreePatternNode *Child = P->getChild(i);
if (!Child->isLeaf() && Child->getExtType() != MVT::Other)
- Size += getPatternSize(Child);
- else if (Child->isLeaf() && dynamic_cast<IntInit*>(Child->getLeafValue())) {
- ++Size; // Matches a ConstantSDNode.
+ Size += getPatternSize(Child, ISE);
+ else if (Child->isLeaf()) {
+ if (dynamic_cast<IntInit*>(Child->getLeafValue()))
+ ++Size; // Matches a ConstantSDNode.
+ else if (NodeIsComplexPattern(Child))
+ Size += getPatternSize(Child, ISE);
}
}
// In particular, we want to match maximal patterns first and lowest cost within
// a particular complexity first.
struct PatternSortingPredicate {
- bool operator()(DAGISelEmitter::PatternToMatch *LHS,
- DAGISelEmitter::PatternToMatch *RHS) {
- unsigned LHSSize = getPatternSize(LHS->first);
- unsigned RHSSize = getPatternSize(RHS->first);
+ PatternSortingPredicate(DAGISelEmitter &ise) : ISE(ise) {};
+ DAGISelEmitter &ISE;
+
+ bool operator()(PatternToMatch *LHS,
+ PatternToMatch *RHS) {
+ unsigned LHSSize = getPatternSize(LHS->getSrcPattern(), ISE);
+ unsigned RHSSize = getPatternSize(RHS->getSrcPattern(), ISE);
if (LHSSize > RHSSize) return true; // LHS -> bigger -> less cost
if (LHSSize < RHSSize) return false;
// If the patterns have equal complexity, compare generated instruction cost
- return getResultPatternCost(LHS->second) <getResultPatternCost(RHS->second);
+ return getResultPatternCost(LHS->getDstPattern()) <
+ getResultPatternCost(RHS->getDstPattern());
}
};
-/// nodeHasChain - return true if TreePatternNode has the property
-/// 'hasChain', meaning it reads a ctrl-flow chain operand and writes
-/// a chain result.
-static bool nodeHasChain(TreePatternNode *N, DAGISelEmitter &ISE)
-{
- if (N->isLeaf()) return false;
-
- const SDNodeInfo &NodeInfo = ISE.getSDNodeInfo(N->getOperator());
- return NodeInfo.hasProperty(SDNodeInfo::SDNPHasChain);
+/// getRegisterValueType - Look up and return the first ValueType of specified
+/// RegisterClass record
+static MVT::ValueType getRegisterValueType(Record *R, const CodeGenTarget &T) {
+ if (const CodeGenRegisterClass *RC = T.getRegisterClassForRegister(R))
+ return RC->getValueTypeNum(0);
+ return MVT::Other;
}
-/// EmitMatchForPattern - Emit a matcher for N, going to the label for PatternNo
-/// if the match fails. At this point, we already know that the opcode for N
-/// matches, and the SDNode for the result has the RootName specified name.
-void DAGISelEmitter::EmitMatchForPattern(TreePatternNode *N,
- const std::string &RootName,
- std::map<std::string,std::string> &VarMap,
- unsigned PatternNo,std::ostream &OS) {
- if (N->isLeaf()) {
- if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
- OS << " if (cast<ConstantSDNode>(" << RootName
- << ")->getSignExtended() != " << II->getValue() << ")\n"
- << " goto P" << PatternNo << "Fail;\n";
- return;
- }
- assert(0 && "Cannot match this as a leaf value!");
- abort();
- }
-
- // If this node has a name associated with it, capture it in VarMap. If
- // we already saw this in the pattern, emit code to verify dagness.
- if (!N->getName().empty()) {
- std::string &VarMapEntry = VarMap[N->getName()];
- if (VarMapEntry.empty()) {
- VarMapEntry = RootName;
- } else {
- // If we get here, this is a second reference to a specific name. Since
- // we already have checked that the first reference is valid, we don't
- // have to recursively match it, just check that it's the same as the
- // previously named thing.
- OS << " if (" << VarMapEntry << " != " << RootName
- << ") goto P" << PatternNo << "Fail;\n";
- return;
- }
- }
+/// RemoveAllTypes - A quick recursive walk over a pattern which removes all
+/// type information from it.
+static void RemoveAllTypes(TreePatternNode *N) {
+ N->setType(MVT::isUnknown);
+ if (!N->isLeaf())
+ for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i)
+ RemoveAllTypes(N->getChild(i));
+}
- // Emit code to load the child nodes and match their contents recursively.
- unsigned OpNo = (unsigned) nodeHasChain(N, *this);
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i, ++OpNo) {
- OS << " SDOperand " << RootName << OpNo <<" = " << RootName
- << ".getOperand(" << OpNo << ");\n";
- TreePatternNode *Child = N->getChild(i);
-
- if (!Child->isLeaf()) {
- // If it's not a leaf, recursively match.
- const SDNodeInfo &CInfo = getSDNodeInfo(Child->getOperator());
- OS << " if (" << RootName << OpNo << ".getOpcode() != "
- << CInfo.getEnumName() << ") goto P" << PatternNo << "Fail;\n";
- EmitMatchForPattern(Child, RootName + utostr(OpNo), VarMap, PatternNo,
- OS);
- } else {
- // If this child has a name associated with it, capture it in VarMap. If
- // we already saw this in the pattern, emit code to verify dagness.
- if (!Child->getName().empty()) {
- std::string &VarMapEntry = VarMap[Child->getName()];
- if (VarMapEntry.empty()) {
- VarMapEntry = RootName + utostr(OpNo);
- } else {
- // If we get here, this is a second reference to a specific name. Since
- // we already have checked that the first reference is valid, we don't
- // have to recursively match it, just check that it's the same as the
- // previously named thing.
- OS << " if (" << VarMapEntry << " != " << RootName << OpNo
- << ") goto P" << PatternNo << "Fail;\n";
- continue;
+Record *DAGISelEmitter::getSDNodeNamed(const std::string &Name) const {
+ Record *N = Records.getDef(Name);
+ assert(N && N->isSubClassOf("SDNode") && "Bad argument");
+ return N;
+}
+
+class PatternCodeEmitter {
+private:
+ DAGISelEmitter &ISE;
+
+ // Predicates.
+ ListInit *Predicates;
+ // Instruction selector pattern.
+ TreePatternNode *Pattern;
+ // Matched instruction.
+ TreePatternNode *Instruction;
+ unsigned PatternNo;
+ std::ostream &OS;
+ // Node to name mapping
+ std::map<std::string,std::string> VariableMap;
+ // Names of all the folded nodes which produce chains.
+ std::vector<std::pair<std::string, unsigned> > FoldedChains;
+ bool FoundChain;
+ unsigned TmpNo;
+
+public:
+ PatternCodeEmitter(DAGISelEmitter &ise, ListInit *preds,
+ TreePatternNode *pattern, TreePatternNode *instr,
+ unsigned PatNum, std::ostream &os) :
+ ISE(ise), Predicates(preds), Pattern(pattern), Instruction(instr),
+ PatternNo(PatNum), OS(os), FoundChain(false), TmpNo(0) {};
+
+ /// EmitMatchCode - Emit a matcher for N, going to the label for PatternNo
+ /// if the match fails. At this point, we already know that the opcode for N
+ /// matches, and the SDNode for the result has the RootName specified name.
+ void EmitMatchCode(TreePatternNode *N, const std::string &RootName,
+ bool isRoot = false) {
+
+ // Emit instruction predicates. Each predicate is just a string for now.
+ if (isRoot) {
+ for (unsigned i = 0, e = Predicates->getSize(); i != e; ++i) {
+ if (DefInit *Pred = dynamic_cast<DefInit*>(Predicates->getElement(i))) {
+ Record *Def = Pred->getDef();
+ if (Def->isSubClassOf("Predicate")) {
+ if (i == 0)
+ OS << " if (";
+ else
+ OS << " && ";
+ OS << "(" << Def->getValueAsString("CondString") << ")";
+ if (i == e-1)
+ OS << ") goto P" << PatternNo << "Fail;\n";
+ } else {
+ Def->dump();
+ assert(0 && "Unknown predicate type!");
+ }
}
}
-
- // Handle leaves of various types.
- if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
- Record *LeafRec = DI->getDef();
- if (LeafRec->isSubClassOf("RegisterClass") ||
- LeafRec->isSubClassOf("Register")) {
- // Handle register references. Nothing to do here.
- } else if (LeafRec->isSubClassOf("ValueType")) {
- // Make sure this is the specified value type.
- OS << " if (cast<VTSDNode>(" << RootName << OpNo << ")->getVT() != "
- << "MVT::" << LeafRec->getName() << ") goto P" << PatternNo
- << "Fail;\n";
- } else if (LeafRec->isSubClassOf("CondCode")) {
- // Make sure this is the specified cond code.
- OS << " if (cast<CondCodeSDNode>(" << RootName << OpNo
- << ")->get() != " << "ISD::" << LeafRec->getName()
- << ") goto P" << PatternNo << "Fail;\n";
- } else {
- Child->dump();
- assert(0 && "Unknown leaf type!");
- }
- } else if (IntInit *II = dynamic_cast<IntInit*>(Child->getLeafValue())) {
- OS << " if (!isa<ConstantSDNode>(" << RootName << OpNo << ") ||\n"
- << " cast<ConstantSDNode>(" << RootName << OpNo
+ }
+
+ if (N->isLeaf()) {
+ if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
+ OS << " if (cast<ConstantSDNode>(" << RootName
<< ")->getSignExtended() != " << II->getValue() << ")\n"
<< " goto P" << PatternNo << "Fail;\n";
+ return;
+ } else if (!NodeIsComplexPattern(N)) {
+ assert(0 && "Cannot match this as a leaf value!");
+ abort();
+ }
+ }
+
+ // If this node has a name associated with it, capture it in VariableMap. If
+ // we already saw this in the pattern, emit code to verify dagness.
+ if (!N->getName().empty()) {
+ std::string &VarMapEntry = VariableMap[N->getName()];
+ if (VarMapEntry.empty()) {
+ VarMapEntry = RootName;
} else {
- Child->dump();
- assert(0 && "Unknown leaf type!");
+ // If we get here, this is a second reference to a specific name. Since
+ // we already have checked that the first reference is valid, we don't
+ // have to recursively match it, just check that it's the same as the
+ // previously named thing.
+ OS << " if (" << VarMapEntry << " != " << RootName
+ << ") goto P" << PatternNo << "Fail;\n";
+ return;
}
}
- }
-
- // If there is a node predicate for this, emit the call.
- if (!N->getPredicateFn().empty())
- OS << " if (!" << N->getPredicateFn() << "(" << RootName
- << ".Val)) goto P" << PatternNo << "Fail;\n";
-}
-
-/// getRegisterValueType - Look up and return the first ValueType of specified
-/// RegisterClass record
-static MVT::ValueType getRegisterValueType(Record *R, const CodeGenTarget &T) {
- if (const CodeGenRegisterClass *RC = T.getRegisterClassForRegister(R))
- return RC->getValueTypeNum(0);
- return MVT::Other;
-}
-/// EmitLeadChainForPattern - Emit the flag operands for the DAG that will be
-/// built in CodeGenPatternResult.
-void DAGISelEmitter::EmitLeadChainForPattern(TreePatternNode *N,
- const std::string &RootName,
- std::ostream &OS,
- bool &HasChain) {
- if (!N->isLeaf()) {
- Record *Op = N->getOperator();
- if (Op->isSubClassOf("Instruction")) {
- bool HasCtrlDep = Op->getValueAsBit("hasCtrlDep");
- unsigned OpNo = (unsigned) HasCtrlDep;
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i)
- EmitLeadChainForPattern(N->getChild(i), RootName + utostr(OpNo),
- OS, HasChain);
-
- if (!HasChain && HasCtrlDep) {
- OS << " SDOperand Chain = Select("
- << RootName << ".getOperand(0));\n";
- HasChain = true;
+ // Emit code to load the child nodes and match their contents recursively.
+ unsigned OpNo = 0;
+ bool HasChain = NodeHasChain(N, ISE);
+ if (HasChain) {
+ OpNo = 1;
+ if (!isRoot) {
+ const SDNodeInfo &CInfo = ISE.getSDNodeInfo(N->getOperator());
+ OS << " if (!" << RootName << ".hasOneUse()) goto P"
+ << PatternNo << "Fail; // Multiple uses of actual result?\n";
+ OS << " if (CodeGenMap.count(" << RootName
+ << ".getValue(" << CInfo.getNumResults() << "))) goto P"
+ << PatternNo << "Fail; // Already selected for a chain use?\n";
}
}
- }
-}
-/// EmitCopyToRegsForPattern - Emit the flag operands for the DAG that will be
-/// built in CodeGenPatternResult.
-void DAGISelEmitter::EmitCopyToRegsForPattern(TreePatternNode *N,
- const std::string &RootName,
- std::ostream &OS,
- bool &HasChain, bool &InFlag) {
- const CodeGenTarget &T = getTargetInfo();
- unsigned OpNo = (unsigned) nodeHasChain(N, *this);
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i, ++OpNo) {
- TreePatternNode *Child = N->getChild(i);
- if (!Child->isLeaf()) {
- EmitCopyToRegsForPattern(Child, RootName + utostr(OpNo), OS, HasChain,
- InFlag);
- } else {
- if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
- Record *RR = DI->getDef();
- if (RR->isSubClassOf("Register")) {
- MVT::ValueType RVT = getRegisterValueType(RR, T);
- if (!InFlag) {
- OS << " SDOperand InFlag = SDOperand(0,0);\n";
- InFlag = true;
+ for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i, ++OpNo) {
+ OS << " SDOperand " << RootName << OpNo <<" = " << RootName
+ << ".getOperand(" << OpNo << ");\n";
+ TreePatternNode *Child = N->getChild(i);
+
+ if (!Child->isLeaf()) {
+ // If it's not a leaf, recursively match.
+ const SDNodeInfo &CInfo = ISE.getSDNodeInfo(Child->getOperator());
+ OS << " if (" << RootName << OpNo << ".getOpcode() != "
+ << CInfo.getEnumName() << ") goto P" << PatternNo << "Fail;\n";
+ EmitMatchCode(Child, RootName + utostr(OpNo));
+ if (NodeHasChain(Child, ISE)) {
+ FoldedChains.push_back(std::make_pair(RootName + utostr(OpNo),
+ CInfo.getNumResults()));
+ }
+ } else {
+ // If this child has a name associated with it, capture it in VarMap. If
+ // we already saw this in the pattern, emit code to verify dagness.
+ if (!Child->getName().empty()) {
+ std::string &VarMapEntry = VariableMap[Child->getName()];
+ if (VarMapEntry.empty()) {
+ VarMapEntry = RootName + utostr(OpNo);
+ } else {
+ // If we get here, this is a second reference to a specific name. Since
+ // we already have checked that the first reference is valid, we don't
+ // have to recursively match it, just check that it's the same as the
+ // previously named thing.
+ OS << " if (" << VarMapEntry << " != " << RootName << OpNo
+ << ") goto P" << PatternNo << "Fail;\n";
+ continue;
}
- if (HasChain) {
- OS << " SDOperand " << RootName << "CR" << i << ";\n";
- OS << " " << RootName << "CR" << i
- << " = CurDAG->getCopyToReg(Chain, CurDAG->getRegister("
- << getQualifiedName(RR) << ", MVT::" << getEnumName(RVT) << ")"
- << ", Select(" << RootName << OpNo << "), InFlag);\n";
- OS << " Chain = " << RootName << "CR" << i
- << ".getValue(0);\n";
- OS << " InFlag = " << RootName << "CR" << i
- << ".getValue(1);\n";
+ }
+
+ // Handle leaves of various types.
+ if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
+ Record *LeafRec = DI->getDef();
+ if (LeafRec->isSubClassOf("RegisterClass")) {
+ // Handle register references. Nothing to do here.
+ } else if (LeafRec->isSubClassOf("Register")) {
+ } else if (LeafRec->isSubClassOf("ComplexPattern")) {
+ // Handle complex pattern. Nothing to do here.
+ } else if (LeafRec->getName() == "srcvalue") {
+ // Place holder for SRCVALUE nodes. Nothing to do here.
+ } else if (LeafRec->isSubClassOf("ValueType")) {
+ // Make sure this is the specified value type.
+ OS << " if (cast<VTSDNode>(" << RootName << OpNo << ")->getVT() != "
+ << "MVT::" << LeafRec->getName() << ") goto P" << PatternNo
+ << "Fail;\n";
+ } else if (LeafRec->isSubClassOf("CondCode")) {
+ // Make sure this is the specified cond code.
+ OS << " if (cast<CondCodeSDNode>(" << RootName << OpNo
+ << ")->get() != " << "ISD::" << LeafRec->getName()
+ << ") goto P" << PatternNo << "Fail;\n";
} else {
- OS << " InFlag = CurDAG->getCopyToReg(CurDAG->getEntryNode()"
- << ", CurDAG->getRegister(" << getQualifiedName(RR)
- << ", MVT::" << getEnumName(RVT) << ")"
- << ", Select(" << RootName << OpNo
- << "), InFlag).getValue(1);\n";
+ Child->dump();
+ assert(0 && "Unknown leaf type!");
}
+ } else if (IntInit *II = dynamic_cast<IntInit*>(Child->getLeafValue())) {
+ OS << " if (!isa<ConstantSDNode>(" << RootName << OpNo << ") ||\n"
+ << " cast<ConstantSDNode>(" << RootName << OpNo
+ << ")->getSignExtended() != " << II->getValue() << ")\n"
+ << " goto P" << PatternNo << "Fail;\n";
+ } else {
+ Child->dump();
+ assert(0 && "Unknown leaf type!");
}
}
}
- }
-}
-/// CodeGenPatternResult - Emit the action for a pattern. Now that it has
-/// matched, we actually have to build a DAG!
-unsigned DAGISelEmitter::
-CodeGenPatternResult(TreePatternNode *N, unsigned &Ctr,
- std::map<std::string,std::string> &VariableMap,
- std::ostream &OS, bool &HasChain, bool InFlag,
- bool isRoot) {
- // This is something selected from the pattern we matched.
- if (!N->getName().empty()) {
- assert(!isRoot && "Root of pattern cannot be a leaf!");
- std::string &Val = VariableMap[N->getName()];
- assert(!Val.empty() &&
- "Variable referenced but not defined and not caught earlier!");
- if (Val[0] == 'T' && Val[1] == 'm' && Val[2] == 'p') {
- // Already selected this operand, just return the tmpval.
- return atoi(Val.c_str()+3);
- }
-
- unsigned ResNo = Ctr++;
- if (!N->isLeaf() && N->getOperator()->getName() == "imm") {
- switch (N->getType()) {
- default: assert(0 && "Unknown type for constant node!");
- case MVT::i1: OS << " bool Tmp"; break;
- case MVT::i8: OS << " unsigned char Tmp"; break;
- case MVT::i16: OS << " unsigned short Tmp"; break;
- case MVT::i32: OS << " unsigned Tmp"; break;
- case MVT::i64: OS << " uint64_t Tmp"; break;
+ if (HasChain) {
+ if (!FoundChain) {
+ OS << " SDOperand Chain = " << RootName << ".getOperand(0);\n";
+ FoundChain = true;
}
- OS << ResNo << "C = cast<ConstantSDNode>(" << Val << ")->getValue();\n";
- OS << " SDOperand Tmp" << ResNo << " = CurDAG->getTargetConstant(Tmp"
- << ResNo << "C, MVT::" << getEnumName(N->getType()) << ");\n";
- } else if (!N->isLeaf() && N->getOperator()->getName() == "tglobaladdr") {
- OS << " SDOperand Tmp" << ResNo << " = " << Val << ";\n";
- } else {
- OS << " SDOperand Tmp" << ResNo << " = Select(" << Val << ");\n";
}
- // Add Tmp<ResNo> to VariableMap, so that we don't multiply select this
- // value if used multiple times by this pattern result.
- Val = "Tmp"+utostr(ResNo);
- return ResNo;
+
+ // If there is a node predicate for this, emit the call.
+ if (!N->getPredicateFn().empty())
+ OS << " if (!" << N->getPredicateFn() << "(" << RootName
+ << ".Val)) goto P" << PatternNo << "Fail;\n";
}
+
+ /// EmitResultCode - Emit the action for a pattern. Now that it has matched
+ /// we actually have to build a DAG!
+ std::pair<unsigned, unsigned>
+ EmitResultCode(TreePatternNode *N, bool isRoot = false) {
+ // This is something selected from the pattern we matched.
+ if (!N->getName().empty()) {
+ assert(!isRoot && "Root of pattern cannot be a leaf!");
+ std::string &Val = VariableMap[N->getName()];
+ assert(!Val.empty() &&
+ "Variable referenced but not defined and not caught earlier!");
+ if (Val[0] == 'T' && Val[1] == 'm' && Val[2] == 'p') {
+ // Already selected this operand, just return the tmpval.
+ return std::make_pair(1, atoi(Val.c_str()+3));
+ }
+
+ const ComplexPattern *CP;
+ unsigned ResNo = TmpNo++;
+ unsigned NumRes = 1;
+ if (!N->isLeaf() && N->getOperator()->getName() == "imm") {
+ switch (N->getType()) {
+ default: assert(0 && "Unknown type for constant node!");
+ case MVT::i1: OS << " bool Tmp"; break;
+ case MVT::i8: OS << " unsigned char Tmp"; break;
+ case MVT::i16: OS << " unsigned short Tmp"; break;
+ case MVT::i32: OS << " unsigned Tmp"; break;
+ case MVT::i64: OS << " uint64_t Tmp"; break;
+ }
+ OS << ResNo << "C = cast<ConstantSDNode>(" << Val << ")->getValue();\n";
+ OS << " SDOperand Tmp" << ResNo << " = CurDAG->getTargetConstant(Tmp"
+ << ResNo << "C, MVT::" << getEnumName(N->getType()) << ");\n";
+ } else if (!N->isLeaf() && N->getOperator()->getName() == "tglobaladdr") {
+ OS << " SDOperand Tmp" << ResNo << " = " << Val << ";\n";
+ } else if (!N->isLeaf() && N->getOperator()->getName() == "tconstpool") {
+ OS << " SDOperand Tmp" << ResNo << " = " << Val << ";\n";
+ } else if (N->isLeaf() && (CP = NodeGetComplexPattern(N, ISE))) {
+ std::string Fn = CP->getSelectFunc();
+ NumRes = CP->getNumOperands();
+ OS << " SDOperand ";
+ for (unsigned i = 0; i < NumRes; i++) {
+ if (i != 0) OS << ", ";
+ OS << "Tmp" << i + ResNo;
+ }
+ OS << ";\n";
+ OS << " if (!" << Fn << "(" << Val;
+ for (unsigned i = 0; i < NumRes; i++)
+ OS << ", Tmp" << i + ResNo;
+ OS << ")) goto P" << PatternNo << "Fail;\n";
+ TmpNo = ResNo + NumRes;
+ } else {
+ OS << " SDOperand Tmp" << ResNo << " = Select(" << Val << ");\n";
+ }
+ // Add Tmp<ResNo> to VariableMap, so that we don't multiply select this
+ // value if used multiple times by this pattern result.
+ Val = "Tmp"+utostr(ResNo);
+ return std::make_pair(NumRes, ResNo);
+ }
- if (N->isLeaf()) {
- // If this is an explicit register reference, handle it.
- if (DefInit *DI = dynamic_cast<DefInit*>(N->getLeafValue())) {
- unsigned ResNo = Ctr++;
- if (DI->getDef()->isSubClassOf("Register")) {
- OS << " SDOperand Tmp" << ResNo << " = CurDAG->getRegister("
- << getQualifiedName(DI->getDef()) << ", MVT::"
+ if (N->isLeaf()) {
+ // If this is an explicit register reference, handle it.
+ if (DefInit *DI = dynamic_cast<DefInit*>(N->getLeafValue())) {
+ unsigned ResNo = TmpNo++;
+ if (DI->getDef()->isSubClassOf("Register")) {
+ OS << " SDOperand Tmp" << ResNo << " = CurDAG->getRegister("
+ << ISE.getQualifiedName(DI->getDef()) << ", MVT::"
+ << getEnumName(N->getType())
+ << ");\n";
+ return std::make_pair(1, ResNo);
+ }
+ } else if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
+ unsigned ResNo = TmpNo++;
+ OS << " SDOperand Tmp" << ResNo << " = CurDAG->getTargetConstant("
+ << II->getValue() << ", MVT::"
<< getEnumName(N->getType())
<< ");\n";
- return ResNo;
+ return std::make_pair(1, ResNo);
}
- } else if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
- unsigned ResNo = Ctr++;
- OS << " SDOperand Tmp" << ResNo << " = CurDAG->getTargetConstant("
- << II->getValue() << ", MVT::"
- << getEnumName(N->getType())
- << ");\n";
- return ResNo;
- }
- N->dump();
- assert(0 && "Unknown leaf type!");
- return ~0U;
- }
-
- Record *Op = N->getOperator();
- if (Op->isSubClassOf("Instruction")) {
- bool HasCtrlDep = Op->getValueAsBit("hasCtrlDep");
-
- // Emit all of the operands.
- std::vector<unsigned> Ops;
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i)
- Ops.push_back(CodeGenPatternResult(N->getChild(i), Ctr,
- VariableMap, OS, HasChain, InFlag));
+ N->dump();
+ assert(0 && "Unknown leaf type!");
+ return std::make_pair(1, ~0U);
+ }
- CodeGenInstruction &II = Target.getInstruction(Op->getName());
- unsigned ResNo = Ctr++;
+ Record *Op = N->getOperator();
+ if (Op->isSubClassOf("Instruction")) {
+ const DAGInstruction &Inst = ISE.getInstruction(Op);
+ unsigned NumImpResults = Inst.getNumImpResults();
+ unsigned NumImpOperands = Inst.getNumImpOperands();
+ bool InFlag = NumImpOperands > 0;
+ bool OutFlag = NumImpResults > 0;
+ bool IsCopyFromReg = false;
+
+ if (InFlag || OutFlag)
+ OS << " SDOperand InFlag = SDOperand(0,0);\n";
+
+ // Determine operand emission order. Complex pattern first.
+ std::vector<std::pair<unsigned, TreePatternNode*> > EmitOrder;
+ std::vector<std::pair<unsigned, TreePatternNode*> >::iterator OI;
+ for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i) {
+ TreePatternNode *Child = N->getChild(i);
+ if (i == 0) {
+ EmitOrder.push_back(std::make_pair(i, Child));
+ OI = EmitOrder.begin();
+ } else if (NodeIsComplexPattern(Child)) {
+ OI = EmitOrder.insert(OI, std::make_pair(i, Child));
+ } else {
+ EmitOrder.push_back(std::make_pair(i, Child));
+ }
+ }
- const DAGInstruction &Inst = getInstruction(Op);
- unsigned NumResults = Inst.getNumResults();
-
- if (!isRoot) {
- OS << " SDOperand Tmp" << ResNo << " = CurDAG->getTargetNode("
- << II.Namespace << "::" << II.TheDef->getName() << ", MVT::"
- << getEnumName(N->getType());
- unsigned LastOp = 0;
- for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
- LastOp = Ops[i];
- OS << ", Tmp" << LastOp;
+ // Emit all of the operands.
+ std::vector<std::pair<unsigned, unsigned> > NumTemps(EmitOrder.size());
+ for (unsigned i = 0, e = EmitOrder.size(); i != e; ++i) {
+ unsigned OpOrder = EmitOrder[i].first;
+ TreePatternNode *Child = EmitOrder[i].second;
+ std::pair<unsigned, unsigned> NumTemp = EmitResultCode(Child);
+ NumTemps[OpOrder] = NumTemp;
}
- OS << ");\n";
- if (HasCtrlDep) {
- // Must have at least one result
- OS << " Chain = Tmp" << LastOp << ".getValue("
- << NumResults << ");\n";
+
+ // List all the operands in the right order.
+ std::vector<unsigned> Ops;
+ for (unsigned i = 0, e = NumTemps.size(); i != e; i++) {
+ for (unsigned j = 0; j < NumTemps[i].first; j++)
+ Ops.push_back(NumTemps[i].second + j);
}
- } else if (HasCtrlDep) {
- if (NumResults > 0)
- OS << " SDOperand Result = ";
- else
- OS << " Chain = CodeGenMap[N] = ";
- OS << "CurDAG->getTargetNode("
- << II.Namespace << "::" << II.TheDef->getName();
- if (NumResults > 0)
- OS << ", MVT::" << getEnumName(N->getType()); // TODO: multiple results?
- OS << ", MVT::Other";
- for (unsigned i = 0, e = Ops.size(); i != e; ++i)
- OS << ", Tmp" << Ops[i];
- OS << ", Chain";
+
+ const CodeGenTarget &CGT = ISE.getTargetInfo();
+ CodeGenInstruction &II = CGT.getInstruction(Op->getName());
+
+ // Emit all the chain and CopyToReg stuff.
+ if (II.hasCtrlDep)
+ OS << " Chain = Select(Chain);\n";
if (InFlag)
- OS << ", InFlag";
- OS << ");\n";
- if (NumResults > 0) {
- OS << " CodeGenMap[N.getValue(0)] = Result;\n";
- OS << " CodeGenMap[N.getValue(" << NumResults
- << ")] = Result.getValue(" << NumResults << ");\n";
- OS << " Chain = CodeGenMap[N].getValue(" << NumResults << ");\n";
+ EmitCopyToRegs(Pattern, "N", II.hasCtrlDep);
+
+ unsigned NumResults = Inst.getNumResults();
+ unsigned ResNo = TmpNo++;
+ if (!isRoot) {
+ OS << " SDOperand Tmp" << ResNo << " = CurDAG->getTargetNode("
+ << II.Namespace << "::" << II.TheDef->getName();
+ if (N->getType() != MVT::isVoid)
+ OS << ", MVT::" << getEnumName(N->getType());
+ if (OutFlag)
+ OS << ", MVT::Flag";
+
+ unsigned LastOp = 0;
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
+ LastOp = Ops[i];
+ OS << ", Tmp" << LastOp;
+ }
+ OS << ");\n";
+ if (II.hasCtrlDep) {
+ // Must have at least one result
+ OS << " Chain = Tmp" << LastOp << ".getValue("
+ << NumResults << ");\n";
+ }
+ } else if (II.hasCtrlDep || OutFlag) {
+ OS << " SDOperand Result = CurDAG->getTargetNode("
+ << II.Namespace << "::" << II.TheDef->getName();
+
+ // Output order: results, chain, flags
+ // Result types.
+ if (NumResults > 0) {
+ // TODO: multiple results?
+ if (N->getType() != MVT::isVoid)
+ OS << ", MVT::" << getEnumName(N->getType());
+ }
+ if (II.hasCtrlDep)
+ OS << ", MVT::Other";
+ if (OutFlag)
+ OS << ", MVT::Flag";
+
+ // Inputs.
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i)
+ OS << ", Tmp" << Ops[i];
+ if (II.hasCtrlDep) OS << ", Chain";
+ if (InFlag) OS << ", InFlag";
+ OS << ");\n";
+
+ unsigned ValNo = 0;
+ for (unsigned i = 0; i < NumResults; i++) {
+ OS << " CodeGenMap[N.getValue(" << ValNo << ")] = Result"
+ << ".getValue(" << ValNo << ");\n";
+ ValNo++;
+ }
+
+ if (II.hasCtrlDep) {
+ OS << " Chain = Result.getValue(" << ValNo << ");\n";
+ if (OutFlag)
+ OS << " InFlag = Result.getValue(" << ValNo+1 << ");\n";
+ } else if (OutFlag)
+ OS << " InFlag = Result.getValue(" << ValNo << ");\n";
+
+ if (OutFlag)
+ IsCopyFromReg = EmitCopyFromRegs(N, II.hasCtrlDep);
+ if (IsCopyFromReg)
+ OS << " CodeGenMap[N.getValue(" << ValNo++ << ")] = Result;\n";
+
+ if (OutFlag)
+ OS << " CodeGenMap[N.getValue(" << ValNo++ << ")] = InFlag;\n";
+
+ if (IsCopyFromReg || II.hasCtrlDep) {
+ OS << " ";
+ if (IsCopyFromReg || NodeHasChain(Pattern, ISE))
+ OS << "CodeGenMap[N.getValue(" << ValNo << ")] = ";
+ for (unsigned j = 0, e = FoldedChains.size(); j < e; j++)
+ OS << "CodeGenMap[" << FoldedChains[j].first << ".getValue("
+ << FoldedChains[j].second << ")] = ";
+ OS << "Chain;\n";
+ }
+
+ // FIXME: this only works because (for now) an instruction can either
+ // produce a single result or a single flag.
+ if (II.hasCtrlDep && OutFlag) {
+ if (IsCopyFromReg)
+ OS << " return (N.ResNo == 0) ? Result : "
+ << "((N.ResNo == 2) ? Chain : InFlag);"
+ << " // Chain comes before flag.\n";
+ else
+ OS << " return (N.ResNo) ? Chain : InFlag;"
+ << " // Chain comes before flag.\n";
+ } else {
+ OS << " return Result.getValue(N.ResNo);\n";
+ }
+ } else {
+ // If this instruction is the root, and if there is only one use of it,
+ // use SelectNodeTo instead of getTargetNode to avoid an allocation.
+ OS << " if (N.Val->hasOneUse()) {\n";
+ OS << " return CurDAG->SelectNodeTo(N.Val, "
+ << II.Namespace << "::" << II.TheDef->getName();
+ if (N->getType() != MVT::isVoid)
+ OS << ", MVT::" << getEnumName(N->getType());
+ if (OutFlag)
+ OS << ", MVT::Flag";
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i)
+ OS << ", Tmp" << Ops[i];
+ if (InFlag)
+ OS << ", InFlag";
+ OS << ");\n";
+ OS << " } else {\n";
+ OS << " return CodeGenMap[N] = CurDAG->getTargetNode("
+ << II.Namespace << "::" << II.TheDef->getName();
+ if (N->getType() != MVT::isVoid)
+ OS << ", MVT::" << getEnumName(N->getType());
+ if (OutFlag)
+ OS << ", MVT::Flag";
+ for (unsigned i = 0, e = Ops.size(); i != e; ++i)
+ OS << ", Tmp" << Ops[i];
+ if (InFlag)
+ OS << ", InFlag";
+ OS << ");\n";
+ OS << " }\n";
}
- if (NumResults == 0)
- OS << " return Chain;\n";
- else
- OS << " return (N.ResNo) ? Chain : CodeGenMap[N];\n";
+
+ return std::make_pair(1, ResNo);
+ } else if (Op->isSubClassOf("SDNodeXForm")) {
+ assert(N->getNumChildren() == 1 && "node xform should have one child!");
+ unsigned OpVal = EmitResultCode(N->getChild(0)).second;
+ unsigned ResNo = TmpNo++;
+ OS << " SDOperand Tmp" << ResNo << " = Transform_" << Op->getName()
+ << "(Tmp" << OpVal << ".Val);\n";
+ if (isRoot) {
+ OS << " CodeGenMap[N] = Tmp" << ResNo << ";\n";
+ OS << " return Tmp" << ResNo << ";\n";
+ }
+ return std::make_pair(1, ResNo);
} else {
- // If this instruction is the root, and if there is only one use of it,
- // use SelectNodeTo instead of getTargetNode to avoid an allocation.
- OS << " if (N.Val->hasOneUse()) {\n";
- OS << " return CurDAG->SelectNodeTo(N.Val, "
- << II.Namespace << "::" << II.TheDef->getName() << ", MVT::"
- << getEnumName(N->getType());
- for (unsigned i = 0, e = Ops.size(); i != e; ++i)
- OS << ", Tmp" << Ops[i];
- if (InFlag)
- OS << ", InFlag";
- OS << ");\n";
- OS << " } else {\n";
- OS << " return CodeGenMap[N] = CurDAG->getTargetNode("
- << II.Namespace << "::" << II.TheDef->getName() << ", MVT::"
- << getEnumName(N->getType());
- for (unsigned i = 0, e = Ops.size(); i != e; ++i)
- OS << ", Tmp" << Ops[i];
- if (InFlag)
- OS << ", InFlag";
- OS << ");\n";
- OS << " }\n";
- }
- return ResNo;
- } else if (Op->isSubClassOf("SDNodeXForm")) {
- assert(N->getNumChildren() == 1 && "node xform should have one child!");
- unsigned OpVal = CodeGenPatternResult(N->getChild(0), Ctr,
- VariableMap, OS, HasChain, InFlag);
-
- unsigned ResNo = Ctr++;
- OS << " SDOperand Tmp" << ResNo << " = Transform_" << Op->getName()
- << "(Tmp" << OpVal << ".Val);\n";
- if (isRoot) {
- OS << " CodeGenMap[N] = Tmp" << ResNo << ";\n";
- OS << " return Tmp" << ResNo << ";\n";
+ N->dump();
+ assert(0 && "Unknown node in result pattern!");
+ return std::make_pair(1, ~0U);
}
- return ResNo;
- } else {
- N->dump();
- assert(0 && "Unknown node in result pattern!");
- return ~0U;
}
-}
-/// RemoveAllTypes - A quick recursive walk over a pattern which removes all
-/// type information from it.
-static void RemoveAllTypes(TreePatternNode *N) {
- N->setType(MVT::isUnknown);
- if (!N->isLeaf())
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i)
- RemoveAllTypes(N->getChild(i));
-}
-
-/// InsertOneTypeCheck - Insert a type-check for an unresolved type in 'Pat' and
-/// add it to the tree. 'Pat' and 'Other' are isomorphic trees except that
-/// 'Pat' may be missing types. If we find an unresolved type to add a check
-/// for, this returns true otherwise false if Pat has all types.
-static bool InsertOneTypeCheck(TreePatternNode *Pat, TreePatternNode *Other,
- DAGISelEmitter &ISE,
- const std::string &Prefix, unsigned PatternNo,
- std::ostream &OS) {
- // Did we find one?
- if (!Pat->hasTypeSet()) {
- // Move a type over from 'other' to 'pat'.
- Pat->setType(Other->getType());
- OS << " if (" << Prefix << ".getValueType() != MVT::"
- << getName(Pat->getType()) << ") goto P" << PatternNo << "Fail;\n";
- return true;
- } else if (Pat->isLeaf()) {
+ /// InsertOneTypeCheck - Insert a type-check for an unresolved type in 'Pat' and
+ /// add it to the tree. 'Pat' and 'Other' are isomorphic trees except that
+ /// 'Pat' may be missing types. If we find an unresolved type to add a check
+ /// for, this returns true otherwise false if Pat has all types.
+ bool InsertOneTypeCheck(TreePatternNode *Pat, TreePatternNode *Other,
+ const std::string &Prefix) {
+ // Did we find one?
+ if (!Pat->hasTypeSet()) {
+ // Move a type over from 'other' to 'pat'.
+ Pat->setType(Other->getType());
+ OS << " if (" << Prefix << ".Val->getValueType(0) != MVT::"
+ << getName(Pat->getType()) << ") goto P" << PatternNo << "Fail;\n";
+ return true;
+ }
+
+ unsigned OpNo = (unsigned) NodeHasChain(Pat, ISE);
+ for (unsigned i = 0, e = Pat->getNumChildren(); i != e; ++i, ++OpNo)
+ if (InsertOneTypeCheck(Pat->getChild(i), Other->getChild(i),
+ Prefix + utostr(OpNo)))
+ return true;
return false;
}
-
- unsigned OpNo = (unsigned) nodeHasChain(Pat, ISE);
- for (unsigned i = 0, e = Pat->getNumChildren(); i != e; ++i, ++OpNo)
- if (InsertOneTypeCheck(Pat->getChild(i), Other->getChild(i),
- ISE, Prefix + utostr(OpNo), PatternNo, OS))
- return true;
- return false;
-}
-Record *DAGISelEmitter::getSDNodeNamed(const std::string &Name) const {
- Record *N = Records.getDef(Name);
- assert(N && N->isSubClassOf("SDNode") && "Bad argument");
- return N;
-}
+private:
+ /// EmitCopyToRegs - Emit the flag operands for the DAG that is
+ /// being built.
+ void EmitCopyToRegs(TreePatternNode *N, const std::string &RootName,
+ bool HasCtrlDep) {
+ const CodeGenTarget &T = ISE.getTargetInfo();
+ unsigned OpNo = (unsigned) NodeHasChain(N, ISE);
+ for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i, ++OpNo) {
+ TreePatternNode *Child = N->getChild(i);
+ if (!Child->isLeaf()) {
+ EmitCopyToRegs(Child, RootName + utostr(OpNo), HasCtrlDep);
+ } else {
+ if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
+ Record *RR = DI->getDef();
+ if (RR->isSubClassOf("Register")) {
+ MVT::ValueType RVT = getRegisterValueType(RR, T);
+ if (RVT == MVT::Flag) {
+ OS << " InFlag = Select(" << RootName << OpNo << ");\n";
+ } else if (HasCtrlDep) {
+ OS << " SDOperand " << RootName << "CR" << i << ";\n";
+ OS << " " << RootName << "CR" << i
+ << " = CurDAG->getCopyToReg(Chain, CurDAG->getRegister("
+ << ISE.getQualifiedName(RR) << ", MVT::"
+ << getEnumName(RVT) << ")"
+ << ", Select(" << RootName << OpNo << "), InFlag);\n";
+ OS << " Chain = " << RootName << "CR" << i
+ << ".getValue(0);\n";
+ OS << " InFlag = " << RootName << "CR" << i
+ << ".getValue(1);\n";
+ } else {
+ OS << " InFlag = CurDAG->getCopyToReg(CurDAG->getEntryNode()"
+ << ", CurDAG->getRegister(" << ISE.getQualifiedName(RR)
+ << ", MVT::" << getEnumName(RVT) << ")"
+ << ", Select(" << RootName << OpNo
+ << "), InFlag).getValue(1);\n";
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /// EmitCopyFromRegs - Emit code to copy result to physical registers
+ /// as specified by the instruction.
+ bool EmitCopyFromRegs(TreePatternNode *N, bool HasCtrlDep) {
+ bool RetVal = false;
+ Record *Op = N->getOperator();
+ if (Op->isSubClassOf("Instruction")) {
+ const DAGInstruction &Inst = ISE.getInstruction(Op);
+ const CodeGenTarget &CGT = ISE.getTargetInfo();
+ CodeGenInstruction &II = CGT.getInstruction(Op->getName());
+ unsigned NumImpResults = Inst.getNumImpResults();
+ for (unsigned i = 0; i < NumImpResults; i++) {
+ Record *RR = Inst.getImpResult(i);
+ if (RR->isSubClassOf("Register")) {
+ MVT::ValueType RVT = getRegisterValueType(RR, CGT);
+ if (RVT != MVT::Flag) {
+ if (HasCtrlDep) {
+ OS << " Result = CurDAG->getCopyFromReg(Chain, "
+ << ISE.getQualifiedName(RR)
+ << ", MVT::" << getEnumName(RVT) << ", InFlag);\n";
+ OS << " Chain = Result.getValue(1);\n";
+ OS << " InFlag = Result.getValue(2);\n";
+ } else {
+ OS << " SDOperand Chain;\n";
+ OS << " Result = CurDAG->getCopyFromReg("
+ << "CurDAG->getEntryNode(), ISE.getQualifiedName(RR)"
+ << ", MVT::" << getEnumName(RVT) << ", InFlag);\n";
+ OS << " Chain = Result.getValue(1);\n";
+ OS << " InFlag = Result.getValue(2);\n";
+ }
+ RetVal = true;
+ }
+ }
+ }
+ }
+ return RetVal;
+ }
+};
/// EmitCodeForPattern - Given a pattern to match, emit code to the specified
/// stream to match the pattern, and generate the code for the match if it
static unsigned PatternCount = 0;
unsigned PatternNo = PatternCount++;
OS << " { // Pattern #" << PatternNo << ": ";
- Pattern.first->print(OS);
+ Pattern.getSrcPattern()->print(OS);
OS << "\n // Emits: ";
- Pattern.second->print(OS);
+ Pattern.getDstPattern()->print(OS);
OS << "\n";
- OS << " // Pattern complexity = " << getPatternSize(Pattern.first)
- << " cost = " << getResultPatternCost(Pattern.second) << "\n";
+ OS << " // Pattern complexity = "
+ << getPatternSize(Pattern.getSrcPattern(), *this)
+ << " cost = "
+ << getResultPatternCost(Pattern.getDstPattern()) << "\n";
+
+ PatternCodeEmitter Emitter(*this, Pattern.getPredicates(),
+ Pattern.getSrcPattern(), Pattern.getDstPattern(),
+ PatternNo, OS);
// Emit the matcher, capturing named arguments in VariableMap.
- std::map<std::string,std::string> VariableMap;
- EmitMatchForPattern(Pattern.first, "N", VariableMap, PatternNo, OS);
-
+ Emitter.EmitMatchCode(Pattern.getSrcPattern(), "N", true /*the root*/);
+
// TP - Get *SOME* tree pattern, we don't care which.
TreePattern &TP = *PatternFragments.begin()->second;
// apply the type to the tree, then rerun type inference. Iterate until all
// types are resolved.
//
- TreePatternNode *Pat = Pattern.first->clone();
+ TreePatternNode *Pat = Pattern.getSrcPattern()->clone();
RemoveAllTypes(Pat);
do {
// Insert a check for an unresolved type and add it to the tree. If we find
// an unresolved type to add a check for, this returns true and we iterate,
// otherwise we are done.
- } while (InsertOneTypeCheck(Pat, Pattern.first, *this, "N", PatternNo, OS));
+ } while (Emitter.InsertOneTypeCheck(Pat, Pattern.getSrcPattern(), "N"));
- bool HasChain = false;
- EmitLeadChainForPattern(Pattern.second, "N", OS, HasChain);
+ Emitter.EmitResultCode(Pattern.getDstPattern(), true /*the root*/);
- bool InFlag = false;
- EmitCopyToRegsForPattern(Pattern.first, "N", OS, HasChain, InFlag);
-
- unsigned TmpNo = 0;
- CodeGenPatternResult(Pattern.second,
- TmpNo, VariableMap, OS, HasChain, InFlag, true /*the root*/);
delete Pat;
OS << " }\n P" << PatternNo << "Fail:\n";
<< " N.getOpcode() < (ISD::BUILTIN_OP_END+" << InstNS
<< "INSTRUCTION_LIST_END))\n"
<< " return N; // Already selected.\n\n"
- << " if (!N.Val->hasOneUse()) {\n"
- << " std::map<SDOperand, SDOperand>::iterator CGMI = CodeGenMap.find(N);\n"
- << " if (CGMI != CodeGenMap.end()) return CGMI->second;\n"
- << " }\n"
+ << " std::map<SDOperand, SDOperand>::iterator CGMI = CodeGenMap.find(N);\n"
+ << " if (CGMI != CodeGenMap.end()) return CGMI->second;\n"
<< " switch (N.getOpcode()) {\n"
<< " default: break;\n"
<< " case ISD::EntryToken: // These leaves remain the same.\n"
+ << " case ISD::BasicBlock:\n"
<< " return N;\n"
<< " case ISD::AssertSext:\n"
<< " case ISD::AssertZext: {\n"
<< " }\n"
<< " case ISD::CopyFromReg: {\n"
<< " SDOperand Chain = Select(N.getOperand(0));\n"
- << " if (Chain == N.getOperand(0)) return N; // No change\n"
- << " SDOperand New = CurDAG->getCopyFromReg(Chain,\n"
- << " cast<RegisterSDNode>(N.getOperand(1))->getReg(),\n"
- << " N.Val->getValueType(0));\n"
- << " return New.getValue(N.ResNo);\n"
+ << " unsigned Reg = cast<RegisterSDNode>(N.getOperand(1))->getReg();\n"
+ << " MVT::ValueType VT = N.Val->getValueType(0);\n"
+ << " if (N.Val->getNumValues() == 2) {\n"
+ << " if (Chain == N.getOperand(0)) return N; // No change\n"
+ << " SDOperand New = CurDAG->getCopyFromReg(Chain, Reg, VT);\n"
+ << " CodeGenMap[N.getValue(0)] = New;\n"
+ << " CodeGenMap[N.getValue(1)] = New.getValue(1);\n"
+ << " return New.getValue(N.ResNo);\n"
+ << " } else {\n"
+ << " SDOperand Flag;\n"
+ << " if (N.getNumOperands() == 3) Flag = Select(N.getOperand(2));\n"
+ << " if (Chain == N.getOperand(0) &&\n"
+ << " (N.getNumOperands() == 2 || Flag == N.getOperand(2)))\n"
+ << " return N; // No change\n"
+ << " SDOperand New = CurDAG->getCopyFromReg(Chain, Reg, VT, Flag);\n"
+ << " CodeGenMap[N.getValue(0)] = New;\n"
+ << " CodeGenMap[N.getValue(1)] = New.getValue(1);\n"
+ << " CodeGenMap[N.getValue(2)] = New.getValue(2);\n"
+ << " return New.getValue(N.ResNo);\n"
+ << " }\n"
<< " }\n"
<< " case ISD::CopyToReg: {\n"
<< " SDOperand Chain = Select(N.getOperand(0));\n"
- << " SDOperand Reg = N.getOperand(1);\n"
+ << " unsigned Reg = cast<RegisterSDNode>(N.getOperand(1))->getReg();\n"
<< " SDOperand Val = Select(N.getOperand(2));\n"
- << " return CodeGenMap[N] = \n"
- << " CurDAG->getNode(ISD::CopyToReg, MVT::Other,\n"
- << " Chain, Reg, Val);\n"
+ << " SDOperand Result = N;\n"
+ << " if (N.Val->getNumValues() == 1) {\n"
+ << " if (Chain != N.getOperand(0) || Val != N.getOperand(2))\n"
+ << " Result = CurDAG->getCopyToReg(Chain, Reg, Val);\n"
+ << " return CodeGenMap[N] = Result;\n"
+ << " } else {\n"
+ << " SDOperand Flag;\n"
+ << " if (N.getNumOperands() == 4) Flag = Select(N.getOperand(3));\n"
+ << " if (Chain != N.getOperand(0) || Val != N.getOperand(2) ||\n"
+ << " (N.getNumOperands() == 4 && Flag != N.getOperand(3)))\n"
+ << " Result = CurDAG->getCopyToReg(Chain, Reg, Val, Flag);\n"
+ << " CodeGenMap[N.getValue(0)] = Result;\n"
+ << " CodeGenMap[N.getValue(1)] = Result.getValue(1);\n"
+ << " return Result.getValue(N.ResNo);\n"
+ << " }\n"
<< " }\n";
// Group the patterns by their top-level opcodes.
std::map<Record*, std::vector<PatternToMatch*>,
CompareByRecordName> PatternsByOpcode;
- for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i)
- if (!PatternsToMatch[i].first->isLeaf()) {
- PatternsByOpcode[PatternsToMatch[i].first->getOperator()]
- .push_back(&PatternsToMatch[i]);
+ for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i) {
+ TreePatternNode *Node = PatternsToMatch[i].getSrcPattern();
+ if (!Node->isLeaf()) {
+ PatternsByOpcode[Node->getOperator()].push_back(&PatternsToMatch[i]);
} else {
+ const ComplexPattern *CP;
if (IntInit *II =
- dynamic_cast<IntInit*>(PatternsToMatch[i].first->getLeafValue())) {
+ dynamic_cast<IntInit*>(Node->getLeafValue())) {
PatternsByOpcode[getSDNodeNamed("imm")].push_back(&PatternsToMatch[i]);
+ } else if ((CP = NodeGetComplexPattern(Node, *this))) {
+ std::vector<Record*> OpNodes = CP->getRootNodes();
+ for (unsigned j = 0, e = OpNodes.size(); j != e; j++) {
+ PatternsByOpcode[OpNodes[j]].insert(PatternsByOpcode[OpNodes[j]].begin(),
+ &PatternsToMatch[i]);
+ }
} else {
std::cerr << "Unrecognized opcode '";
- PatternsToMatch[i].first->dump();
+ Node->dump();
std::cerr << "' on tree pattern '";
- std::cerr << PatternsToMatch[i].second->getOperator()->getName();
+ std::cerr << PatternsToMatch[i].getDstPattern()->getOperator()->getName();
std::cerr << "'!\n";
exit(1);
}
}
+ }
// Loop over all of the case statements.
for (std::map<Record*, std::vector<PatternToMatch*>,
// the matches in order of minimal cost. Sort the patterns so the least
// cost one is at the start.
std::stable_sort(Patterns.begin(), Patterns.end(),
- PatternSortingPredicate());
+ PatternSortingPredicate(*this));
for (unsigned i = 0, e = Patterns.size(); i != e; ++i)
EmitCodeForPattern(*Patterns[i], OS);
ParseNodeInfo();
ParseNodeTransforms(OS);
+ ParseComplexPatterns();
ParsePatternFragments(OS);
ParseInstructions();
ParsePatterns();
DEBUG(std::cerr << "\n\nALL PATTERNS TO MATCH:\n\n";
for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i) {
- std::cerr << "PATTERN: "; PatternsToMatch[i].first->dump();
- std::cerr << "\nRESULT: ";PatternsToMatch[i].second->dump();
+ std::cerr << "PATTERN: "; PatternsToMatch[i].getSrcPattern()->dump();
+ std::cerr << "\nRESULT: ";PatternsToMatch[i].getDstPattern()->dump();
std::cerr << "\n";
});
projects / oota-llvm.git / blobdiff