//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "Record.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Streams.h"
#include <algorithm>
-#include <set>
using namespace llvm;
//===----------------------------------------------------------------------===//
-// Helpers for working with extended types.
-
-/// FilterVTs - Filter a list of VT's according to a predicate.
-///
-template<typename T>
-static std::vector<MVT::ValueType>
-FilterVTs(const std::vector<MVT::ValueType> &InVTs, T Filter) {
- std::vector<MVT::ValueType> Result;
- for (unsigned i = 0, e = InVTs.size(); i != e; ++i)
- if (Filter(InVTs[i]))
- Result.push_back(InVTs[i]);
- return Result;
-}
-
-template<typename T>
-static std::vector<unsigned char>
-FilterEVTs(const std::vector<unsigned char> &InVTs, T Filter) {
- std::vector<unsigned char> Result;
- for (unsigned i = 0, e = InVTs.size(); i != e; ++i)
- if (Filter((MVT::ValueType)InVTs[i]))
- Result.push_back(InVTs[i]);
- return Result;
-}
-
-static std::vector<unsigned char>
-ConvertVTs(const std::vector<MVT::ValueType> &InVTs) {
- std::vector<unsigned char> Result;
- for (unsigned i = 0, e = InVTs.size(); i != e; ++i)
- Result.push_back(InVTs[i]);
- return Result;
-}
-
-static bool LHSIsSubsetOfRHS(const std::vector<unsigned char> &LHS,
- const std::vector<unsigned char> &RHS) {
- if (LHS.size() > RHS.size()) return false;
- for (unsigned i = 0, e = LHS.size(); i != e; ++i)
- if (std::find(RHS.begin(), RHS.end(), LHS[i]) == RHS.end())
- return false;
- return true;
-}
-
-/// isExtIntegerVT - Return true if the specified extended value type vector
-/// contains isInt or an integer value type.
-static bool isExtIntegerInVTs(const std::vector<unsigned char> &EVTs) {
- assert(!EVTs.empty() && "Cannot check for integer in empty ExtVT list!");
- return EVTs[0] == MVT::isInt || !(FilterEVTs(EVTs, MVT::isInteger).empty());
-}
-
-/// isExtFloatingPointVT - Return true if the specified extended value type
-/// vector contains isFP or a FP value type.
-static bool isExtFloatingPointInVTs(const std::vector<unsigned char> &EVTs) {
- assert(!EVTs.empty() && "Cannot check for integer in empty ExtVT list!");
- return EVTs[0] == MVT::isFP ||
- !(FilterEVTs(EVTs, MVT::isFloatingPoint).empty());
-}
-
-//===----------------------------------------------------------------------===//
-// SDTypeConstraint implementation
-//
-
-SDTypeConstraint::SDTypeConstraint(Record *R) {
- OperandNo = R->getValueAsInt("OperandNum");
-
- 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")) {
- ConstraintType = SDTCisFP;
- } else if (R->isSubClassOf("SDTCisSameAs")) {
- ConstraintType = SDTCisSameAs;
- x.SDTCisSameAs_Info.OtherOperandNum = R->getValueAsInt("OtherOperandNum");
- } else if (R->isSubClassOf("SDTCisVTSmallerThanOp")) {
- ConstraintType = SDTCisVTSmallerThanOp;
- x.SDTCisVTSmallerThanOp_Info.OtherOperandNum =
- R->getValueAsInt("OtherOperandNum");
- } else if (R->isSubClassOf("SDTCisOpSmallerThanOp")) {
- ConstraintType = SDTCisOpSmallerThanOp;
- x.SDTCisOpSmallerThanOp_Info.BigOperandNum =
- R->getValueAsInt("BigOperandNum");
- } else if (R->isSubClassOf("SDTCisIntVectorOfSameSize")) {
- ConstraintType = SDTCisIntVectorOfSameSize;
- x.SDTCisIntVectorOfSameSize_Info.OtherOperandNum =
- R->getValueAsInt("OtherOpNum");
- } else {
- std::cerr << "Unrecognized SDTypeConstraint '" << R->getName() << "'!\n";
- exit(1);
- }
-}
-
-/// getOperandNum - Return the node corresponding to operand #OpNo in tree
-/// N, which has NumResults results.
-TreePatternNode *SDTypeConstraint::getOperandNum(unsigned OpNo,
- TreePatternNode *N,
- unsigned NumResults) const {
- assert(NumResults <= 1 &&
- "We only work with nodes with zero or one result so far!");
-
- if (OpNo >= (NumResults + N->getNumChildren())) {
- std::cerr << "Invalid operand number " << OpNo << " ";
- N->dump();
- std::cerr << '\n';
- exit(1);
- }
-
- if (OpNo < NumResults)
- return N; // FIXME: need value #
- else
- return N->getChild(OpNo-NumResults);
-}
-
-/// ApplyTypeConstraint - Given a node in a pattern, apply this type
-/// constraint to the nodes operands. This returns true if it makes a
-/// change, false otherwise. If a type contradiction is found, throw an
-/// exception.
-bool SDTypeConstraint::ApplyTypeConstraint(TreePatternNode *N,
- const SDNodeInfo &NodeInfo,
- TreePattern &TP) const {
- unsigned NumResults = NodeInfo.getNumResults();
- assert(NumResults <= 1 &&
- "We only work with nodes with zero or one result so far!");
-
- // Check that the number of operands is sane. Negative operands -> varargs.
- if (NodeInfo.getNumOperands() >= 0) {
- if (N->getNumChildren() != (unsigned)NodeInfo.getNumOperands())
- TP.error(N->getOperator()->getName() + " node requires exactly " +
- itostr(NodeInfo.getNumOperands()) + " operands!");
- }
-
- const CodeGenTarget &CGT = TP.getDAGISelEmitter().getTargetInfo();
-
- TreePatternNode *NodeToApply = getOperandNum(OperandNo, N, NumResults);
-
- switch (ConstraintType) {
- default: assert(0 && "Unknown constraint type!");
- 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(MVT::iPTR, TP);
- }
- case SDTCisInt: {
- // If there is only one integer type supported, this must be it.
- std::vector<MVT::ValueType> IntVTs =
- FilterVTs(CGT.getLegalValueTypes(), MVT::isInteger);
-
- // If we found exactly one supported integer type, apply it.
- if (IntVTs.size() == 1)
- return NodeToApply->UpdateNodeType(IntVTs[0], TP);
- return NodeToApply->UpdateNodeType(MVT::isInt, TP);
- }
- case SDTCisFP: {
- // If there is only one FP type supported, this must be it.
- std::vector<MVT::ValueType> FPVTs =
- FilterVTs(CGT.getLegalValueTypes(), MVT::isFloatingPoint);
-
- // If we found exactly one supported FP type, apply it.
- if (FPVTs.size() == 1)
- return NodeToApply->UpdateNodeType(FPVTs[0], TP);
- return NodeToApply->UpdateNodeType(MVT::isFP, TP);
- }
- case SDTCisSameAs: {
- TreePatternNode *OtherNode =
- getOperandNum(x.SDTCisSameAs_Info.OtherOperandNum, N, NumResults);
- return NodeToApply->UpdateNodeType(OtherNode->getExtTypes(), TP) |
- OtherNode->UpdateNodeType(NodeToApply->getExtTypes(), TP);
- }
- case SDTCisVTSmallerThanOp: {
- // The NodeToApply must be a leaf node that is a VT. OtherOperandNum must
- // have an integer type that is smaller than the VT.
- if (!NodeToApply->isLeaf() ||
- !dynamic_cast<DefInit*>(NodeToApply->getLeafValue()) ||
- !static_cast<DefInit*>(NodeToApply->getLeafValue())->getDef()
- ->isSubClassOf("ValueType"))
- TP.error(N->getOperator()->getName() + " expects a VT operand!");
- MVT::ValueType VT =
- getValueType(static_cast<DefInit*>(NodeToApply->getLeafValue())->getDef());
- if (!MVT::isInteger(VT))
- TP.error(N->getOperator()->getName() + " VT operand must be integer!");
-
- TreePatternNode *OtherNode =
- getOperandNum(x.SDTCisVTSmallerThanOp_Info.OtherOperandNum, N,NumResults);
-
- // It must be integer.
- bool MadeChange = false;
- MadeChange |= OtherNode->UpdateNodeType(MVT::isInt, TP);
-
- // This code only handles nodes that have one type set. Assert here so
- // that we can change this if we ever need to deal with multiple value
- // types at this point.
- assert(OtherNode->getExtTypes().size() == 1 && "Node has too many types!");
- if (OtherNode->hasTypeSet() && OtherNode->getTypeNum(0) <= VT)
- OtherNode->UpdateNodeType(MVT::Other, TP); // Throw an error.
- return false;
- }
- case SDTCisOpSmallerThanOp: {
- TreePatternNode *BigOperand =
- getOperandNum(x.SDTCisOpSmallerThanOp_Info.BigOperandNum, N, NumResults);
-
- // Both operands must be integer or FP, but we don't care which.
- bool MadeChange = false;
-
- // This code does not currently handle nodes which have multiple types,
- // where some types are integer, and some are fp. Assert that this is not
- // the case.
- assert(!(isExtIntegerInVTs(NodeToApply->getExtTypes()) &&
- isExtFloatingPointInVTs(NodeToApply->getExtTypes())) &&
- !(isExtIntegerInVTs(BigOperand->getExtTypes()) &&
- isExtFloatingPointInVTs(BigOperand->getExtTypes())) &&
- "SDTCisOpSmallerThanOp does not handle mixed int/fp types!");
- if (isExtIntegerInVTs(NodeToApply->getExtTypes()))
- MadeChange |= BigOperand->UpdateNodeType(MVT::isInt, TP);
- else if (isExtFloatingPointInVTs(NodeToApply->getExtTypes()))
- MadeChange |= BigOperand->UpdateNodeType(MVT::isFP, TP);
- if (isExtIntegerInVTs(BigOperand->getExtTypes()))
- MadeChange |= NodeToApply->UpdateNodeType(MVT::isInt, TP);
- else if (isExtFloatingPointInVTs(BigOperand->getExtTypes()))
- MadeChange |= NodeToApply->UpdateNodeType(MVT::isFP, TP);
-
- std::vector<MVT::ValueType> VTs = CGT.getLegalValueTypes();
-
- if (isExtIntegerInVTs(NodeToApply->getExtTypes())) {
- VTs = FilterVTs(VTs, MVT::isInteger);
- } else if (isExtFloatingPointInVTs(NodeToApply->getExtTypes())) {
- VTs = FilterVTs(VTs, MVT::isFloatingPoint);
- } else {
- VTs.clear();
- }
-
- switch (VTs.size()) {
- default: // Too many VT's to pick from.
- case 0: break; // No info yet.
- case 1:
- // Only one VT of this flavor. Cannot ever satisify the constraints.
- return NodeToApply->UpdateNodeType(MVT::Other, TP); // throw
- case 2:
- // If we have exactly two possible types, the little operand must be the
- // small one, the big operand should be the big one. Common with
- // float/double for example.
- assert(VTs[0] < VTs[1] && "Should be sorted!");
- MadeChange |= NodeToApply->UpdateNodeType(VTs[0], TP);
- MadeChange |= BigOperand->UpdateNodeType(VTs[1], TP);
- break;
- }
- return MadeChange;
- }
- case SDTCisIntVectorOfSameSize: {
- TreePatternNode *OtherOperand =
- getOperandNum(x.SDTCisIntVectorOfSameSize_Info.OtherOperandNum,
- N, NumResults);
- if (OtherOperand->hasTypeSet()) {
- if (!MVT::isVector(OtherOperand->getTypeNum(0)))
- TP.error(N->getOperator()->getName() + " VT operand must be a vector!");
- MVT::ValueType IVT = OtherOperand->getTypeNum(0);
- IVT = MVT::getIntVectorWithNumElements(MVT::getVectorNumElements(IVT));
- return NodeToApply->UpdateNodeType(IVT, TP);
- }
- return false;
- }
- }
- return false;
-}
-
-
-//===----------------------------------------------------------------------===//
-// SDNodeInfo implementation
-//
-SDNodeInfo::SDNodeInfo(Record *R) : Def(R) {
- EnumName = R->getValueAsString("Opcode");
- SDClassName = R->getValueAsString("SDClass");
- Record *TypeProfile = R->getValueAsDef("TypeProfile");
- NumResults = TypeProfile->getValueAsInt("NumResults");
- NumOperands = TypeProfile->getValueAsInt("NumOperands");
-
- // Parse the properties.
- Properties = 0;
- std::vector<Record*> PropList = R->getValueAsListOfDefs("Properties");
- for (unsigned i = 0, e = PropList.size(); i != e; ++i) {
- if (PropList[i]->getName() == "SDNPCommutative") {
- Properties |= 1 << SDNPCommutative;
- } else if (PropList[i]->getName() == "SDNPAssociative") {
- Properties |= 1 << SDNPAssociative;
- } else if (PropList[i]->getName() == "SDNPHasChain") {
- Properties |= 1 << SDNPHasChain;
- } else if (PropList[i]->getName() == "SDNPOutFlag") {
- Properties |= 1 << SDNPOutFlag;
- } else if (PropList[i]->getName() == "SDNPInFlag") {
- Properties |= 1 << SDNPInFlag;
- } else if (PropList[i]->getName() == "SDNPOptInFlag") {
- Properties |= 1 << SDNPOptInFlag;
- } else {
- std::cerr << "Unknown SD Node property '" << PropList[i]->getName()
- << "' on node '" << R->getName() << "'!\n";
- exit(1);
- }
- }
-
-
- // Parse the type constraints.
- std::vector<Record*> ConstraintList =
- TypeProfile->getValueAsListOfDefs("Constraints");
- TypeConstraints.assign(ConstraintList.begin(), ConstraintList.end());
-}
-
-//===----------------------------------------------------------------------===//
-// TreePatternNode implementation
-//
-
-TreePatternNode::~TreePatternNode() {
-#if 0 // FIXME: implement refcounted tree nodes!
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- delete getChild(i);
-#endif
-}
-
-/// UpdateNodeType - Set the node type of N to VT if VT contains
-/// information. If N already contains a conflicting type, then throw an
-/// exception. This returns true if any information was updated.
-///
-bool TreePatternNode::UpdateNodeType(const std::vector<unsigned char> &ExtVTs,
- TreePattern &TP) {
- assert(!ExtVTs.empty() && "Cannot update node type with empty type vector!");
-
- if (ExtVTs[0] == MVT::isUnknown || LHSIsSubsetOfRHS(getExtTypes(), ExtVTs))
- return false;
- if (isTypeCompletelyUnknown() || LHSIsSubsetOfRHS(ExtVTs, getExtTypes())) {
- setTypes(ExtVTs);
- return true;
- }
-
- if (getExtTypeNum(0) == MVT::iPTR) {
- if (ExtVTs[0] == MVT::iPTR || ExtVTs[0] == MVT::isInt)
- return false;
- if (isExtIntegerInVTs(ExtVTs)) {
- std::vector<unsigned char> FVTs = FilterEVTs(ExtVTs, MVT::isInteger);
- if (FVTs.size()) {
- setTypes(ExtVTs);
- return true;
- }
- }
- }
-
- if (ExtVTs[0] == MVT::isInt && isExtIntegerInVTs(getExtTypes())) {
- assert(hasTypeSet() && "should be handled above!");
- std::vector<unsigned char> FVTs = FilterEVTs(getExtTypes(), MVT::isInteger);
- if (getExtTypes() == FVTs)
- return false;
- setTypes(FVTs);
- return true;
- }
- if (ExtVTs[0] == MVT::iPTR && isExtIntegerInVTs(getExtTypes())) {
- //assert(hasTypeSet() && "should be handled above!");
- std::vector<unsigned char> FVTs = FilterEVTs(getExtTypes(), MVT::isInteger);
- if (getExtTypes() == FVTs)
- return false;
- if (FVTs.size()) {
- setTypes(FVTs);
- return true;
- }
- }
- if (ExtVTs[0] == MVT::isFP && isExtFloatingPointInVTs(getExtTypes())) {
- assert(hasTypeSet() && "should be handled above!");
- std::vector<unsigned char> FVTs =
- FilterEVTs(getExtTypes(), MVT::isFloatingPoint);
- if (getExtTypes() == FVTs)
- return false;
- setTypes(FVTs);
- return true;
- }
-
- // If we know this is an int or fp type, and we are told it is a specific one,
- // take the advice.
- //
- // Similarly, we should probably set the type here to the intersection of
- // {isInt|isFP} and ExtVTs
- if ((getExtTypeNum(0) == MVT::isInt && isExtIntegerInVTs(ExtVTs)) ||
- (getExtTypeNum(0) == MVT::isFP && isExtFloatingPointInVTs(ExtVTs))) {
- setTypes(ExtVTs);
- return true;
- }
- if (getExtTypeNum(0) == MVT::isInt && ExtVTs[0] == MVT::iPTR) {
- setTypes(ExtVTs);
- return true;
- }
-
- if (isLeaf()) {
- dump();
- std::cerr << " ";
- TP.error("Type inference contradiction found in node!");
- } else {
- TP.error("Type inference contradiction found in node " +
- getOperator()->getName() + "!");
- }
- return true; // unreachable
-}
-
-
-void TreePatternNode::print(std::ostream &OS) const {
- if (isLeaf()) {
- OS << *getLeafValue();
- } else {
- OS << "(" << getOperator()->getName();
- }
-
- // FIXME: At some point we should handle printing all the value types for
- // nodes that are multiply typed.
- switch (getExtTypeNum(0)) {
- case MVT::Other: OS << ":Other"; break;
- case MVT::isInt: OS << ":isInt"; break;
- case MVT::isFP : OS << ":isFP"; break;
- case MVT::isUnknown: ; /*OS << ":?";*/ break;
- case MVT::iPTR: OS << ":iPTR"; break;
- default: {
- std::string VTName = llvm::getName(getTypeNum(0));
- // Strip off MVT:: prefix if present.
- if (VTName.substr(0,5) == "MVT::")
- VTName = VTName.substr(5);
- OS << ":" << VTName;
- break;
- }
- }
-
- if (!isLeaf()) {
- if (getNumChildren() != 0) {
- OS << " ";
- getChild(0)->print(OS);
- for (unsigned i = 1, e = getNumChildren(); i != e; ++i) {
- OS << ", ";
- getChild(i)->print(OS);
- }
- }
- OS << ")";
- }
-
- if (!PredicateFn.empty())
- OS << "<<P:" << PredicateFn << ">>";
- if (TransformFn)
- OS << "<<X:" << TransformFn->getName() << ">>";
- if (!getName().empty())
- OS << ":$" << getName();
-
-}
-void TreePatternNode::dump() const {
- print(std::cerr);
-}
-
-/// isIsomorphicTo - Return true if this node is recursively isomorphic to
-/// the specified node. For this comparison, all of the state of the node
-/// is considered, except for the assigned name. Nodes with differing names
-/// that are otherwise identical are considered isomorphic.
-bool TreePatternNode::isIsomorphicTo(const TreePatternNode *N) const {
- if (N == this) return true;
- if (N->isLeaf() != isLeaf() || getExtTypes() != N->getExtTypes() ||
- getPredicateFn() != N->getPredicateFn() ||
- getTransformFn() != N->getTransformFn())
- return false;
-
- if (isLeaf()) {
- if (DefInit *DI = dynamic_cast<DefInit*>(getLeafValue()))
- if (DefInit *NDI = dynamic_cast<DefInit*>(N->getLeafValue()))
- return DI->getDef() == NDI->getDef();
- return getLeafValue() == N->getLeafValue();
- }
-
- if (N->getOperator() != getOperator() ||
- N->getNumChildren() != getNumChildren()) return false;
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- if (!getChild(i)->isIsomorphicTo(N->getChild(i)))
- return false;
- return true;
-}
-
-/// clone - Make a copy of this tree and all of its children.
-///
-TreePatternNode *TreePatternNode::clone() const {
- TreePatternNode *New;
- if (isLeaf()) {
- New = new TreePatternNode(getLeafValue());
- } else {
- std::vector<TreePatternNode*> CChildren;
- CChildren.reserve(Children.size());
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- CChildren.push_back(getChild(i)->clone());
- New = new TreePatternNode(getOperator(), CChildren);
- }
- New->setName(getName());
- New->setTypes(getExtTypes());
- New->setPredicateFn(getPredicateFn());
- New->setTransformFn(getTransformFn());
- return New;
-}
-
-/// SubstituteFormalArguments - Replace the formal arguments in this tree
-/// with actual values specified by ArgMap.
-void TreePatternNode::
-SubstituteFormalArguments(std::map<std::string, TreePatternNode*> &ArgMap) {
- if (isLeaf()) return;
-
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i) {
- TreePatternNode *Child = getChild(i);
- if (Child->isLeaf()) {
- Init *Val = Child->getLeafValue();
- if (dynamic_cast<DefInit*>(Val) &&
- static_cast<DefInit*>(Val)->getDef()->getName() == "node") {
- // We found a use of a formal argument, replace it with its value.
- Child = ArgMap[Child->getName()];
- assert(Child && "Couldn't find formal argument!");
- setChild(i, Child);
- }
- } else {
- getChild(i)->SubstituteFormalArguments(ArgMap);
- }
- }
-}
-
-
-/// InlinePatternFragments - If this pattern refers to any pattern
-/// fragments, inline them into place, giving us a pattern without any
-/// PatFrag references.
-TreePatternNode *TreePatternNode::InlinePatternFragments(TreePattern &TP) {
- if (isLeaf()) return this; // nothing to do.
- Record *Op = getOperator();
-
- if (!Op->isSubClassOf("PatFrag")) {
- // Just recursively inline children nodes.
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- setChild(i, getChild(i)->InlinePatternFragments(TP));
- return this;
- }
-
- // Otherwise, we found a reference to a fragment. First, look up its
- // TreePattern record.
- TreePattern *Frag = TP.getDAGISelEmitter().getPatternFragment(Op);
-
- // Verify that we are passing the right number of operands.
- if (Frag->getNumArgs() != Children.size())
- TP.error("'" + Op->getName() + "' fragment requires " +
- utostr(Frag->getNumArgs()) + " operands!");
-
- TreePatternNode *FragTree = Frag->getOnlyTree()->clone();
-
- // Resolve formal arguments to their actual value.
- if (Frag->getNumArgs()) {
- // Compute the map of formal to actual arguments.
- std::map<std::string, TreePatternNode*> ArgMap;
- for (unsigned i = 0, e = Frag->getNumArgs(); i != e; ++i)
- ArgMap[Frag->getArgName(i)] = getChild(i)->InlinePatternFragments(TP);
-
- FragTree->SubstituteFormalArguments(ArgMap);
- }
-
- FragTree->setName(getName());
- FragTree->UpdateNodeType(getExtTypes(), TP);
-
- // Get a new copy of this fragment to stitch into here.
- //delete this; // FIXME: implement refcounting!
- return FragTree;
-}
-
-/// getImplicitType - Check to see if the specified record has an implicit
-/// type which should be applied to it. This infer the type of register
-/// references from the register file information, for example.
-///
-static std::vector<unsigned char> getImplicitType(Record *R, bool NotRegisters,
- TreePattern &TP) {
- // Some common return values
- std::vector<unsigned char> Unknown(1, MVT::isUnknown);
- std::vector<unsigned char> Other(1, MVT::Other);
-
- // Check to see if this is a register or a register class...
- if (R->isSubClassOf("RegisterClass")) {
- if (NotRegisters)
- return Unknown;
- const CodeGenRegisterClass &RC =
- TP.getDAGISelEmitter().getTargetInfo().getRegisterClass(R);
- return ConvertVTs(RC.getValueTypes());
- } else if (R->isSubClassOf("PatFrag")) {
- // Pattern fragment types will be resolved when they are inlined.
- return Unknown;
- } else if (R->isSubClassOf("Register")) {
- if (NotRegisters)
- return Unknown;
- const CodeGenTarget &T = TP.getDAGISelEmitter().getTargetInfo();
- return T.getRegisterVTs(R);
- } else if (R->isSubClassOf("ValueType") || R->isSubClassOf("CondCode")) {
- // Using a VTSDNode or CondCodeSDNode.
- return Other;
- } else if (R->isSubClassOf("ComplexPattern")) {
- if (NotRegisters)
- return Unknown;
- std::vector<unsigned char>
- ComplexPat(1, TP.getDAGISelEmitter().getComplexPattern(R).getValueType());
- return ComplexPat;
- } else if (R->getName() == "node" || R->getName() == "srcvalue") {
- // Placeholder.
- return Unknown;
- }
-
- TP.error("Unknown node flavor used in pattern: " + R->getName());
- return Other;
-}
-
-/// ApplyTypeConstraints - Apply all of the type constraints relevent to
-/// this node and its children in the tree. This returns true if it makes a
-/// change, false otherwise. If a type contradiction is found, throw an
-/// exception.
-bool TreePatternNode::ApplyTypeConstraints(TreePattern &TP, bool NotRegisters) {
- DAGISelEmitter &ISE = TP.getDAGISelEmitter();
- if (isLeaf()) {
- if (DefInit *DI = dynamic_cast<DefInit*>(getLeafValue())) {
- // If it's a regclass or something else known, include the type.
- return UpdateNodeType(getImplicitType(DI->getDef(), NotRegisters, TP),TP);
- } else if (IntInit *II = dynamic_cast<IntInit*>(getLeafValue())) {
- // Int inits are always integers. :)
- bool MadeChange = UpdateNodeType(MVT::isInt, TP);
-
- if (hasTypeSet()) {
- // At some point, it may make sense for this tree pattern to have
- // multiple types. Assert here that it does not, so we revisit this
- // code when appropriate.
- assert(getExtTypes().size() >= 1 && "TreePattern doesn't have a type!");
- MVT::ValueType VT = getTypeNum(0);
- for (unsigned i = 1, e = getExtTypes().size(); i != e; ++i)
- assert(getTypeNum(i) == VT && "TreePattern has too many types!");
-
- VT = getTypeNum(0);
- if (VT != MVT::iPTR) {
- unsigned Size = MVT::getSizeInBits(VT);
- // Make sure that the value is representable for this type.
- if (Size < 32) {
- int Val = (II->getValue() << (32-Size)) >> (32-Size);
- if (Val != II->getValue())
- TP.error("Sign-extended integer value '" + itostr(II->getValue())+
- "' is out of range for type '" +
- getEnumName(getTypeNum(0)) + "'!");
- }
- }
- }
-
- return MadeChange;
- }
- return false;
- }
-
- // special handling for set, which isn't really an SDNode.
- if (getOperator()->getName() == "set") {
- assert (getNumChildren() == 2 && "Only handle 2 operand set's for now!");
- bool MadeChange = getChild(0)->ApplyTypeConstraints(TP, NotRegisters);
- MadeChange |= getChild(1)->ApplyTypeConstraints(TP, NotRegisters);
-
- // Types of operands must match.
- MadeChange |= getChild(0)->UpdateNodeType(getChild(1)->getExtTypes(), TP);
- MadeChange |= getChild(1)->UpdateNodeType(getChild(0)->getExtTypes(), TP);
- MadeChange |= UpdateNodeType(MVT::isVoid, TP);
- return MadeChange;
- } else if (getOperator() == ISE.get_intrinsic_void_sdnode() ||
- getOperator() == ISE.get_intrinsic_w_chain_sdnode() ||
- getOperator() == ISE.get_intrinsic_wo_chain_sdnode()) {
- unsigned IID =
- dynamic_cast<IntInit*>(getChild(0)->getLeafValue())->getValue();
- const CodeGenIntrinsic &Int = ISE.getIntrinsicInfo(IID);
- bool MadeChange = false;
-
- // Apply the result type to the node.
- MadeChange = UpdateNodeType(Int.ArgVTs[0], TP);
-
- if (getNumChildren() != Int.ArgVTs.size())
- TP.error("Intrinsic '" + Int.Name + "' expects " +
- utostr(Int.ArgVTs.size()-1) + " operands, not " +
- utostr(getNumChildren()-1) + " operands!");
-
- // Apply type info to the intrinsic ID.
- MadeChange |= getChild(0)->UpdateNodeType(MVT::iPTR, TP);
-
- for (unsigned i = 1, e = getNumChildren(); i != e; ++i) {
- MVT::ValueType OpVT = Int.ArgVTs[i];
- MadeChange |= getChild(i)->UpdateNodeType(OpVT, TP);
- MadeChange |= getChild(i)->ApplyTypeConstraints(TP, NotRegisters);
- }
- return MadeChange;
- } else if (getOperator()->isSubClassOf("SDNode")) {
- const SDNodeInfo &NI = ISE.getSDNodeInfo(getOperator());
-
- bool MadeChange = NI.ApplyTypeConstraints(this, TP);
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- MadeChange |= getChild(i)->ApplyTypeConstraints(TP, NotRegisters);
- // Branch, etc. do not produce results and top-level forms in instr pattern
- // must have void types.
- if (NI.getNumResults() == 0)
- MadeChange |= UpdateNodeType(MVT::isVoid, TP);
-
- // If this is a vector_shuffle operation, apply types to the build_vector
- // operation. The types of the integers don't matter, but this ensures they
- // won't get checked.
- if (getOperator()->getName() == "vector_shuffle" &&
- getChild(2)->getOperator()->getName() == "build_vector") {
- TreePatternNode *BV = getChild(2);
- const std::vector<MVT::ValueType> &LegalVTs
- = ISE.getTargetInfo().getLegalValueTypes();
- MVT::ValueType LegalIntVT = MVT::Other;
- for (unsigned i = 0, e = LegalVTs.size(); i != e; ++i)
- if (MVT::isInteger(LegalVTs[i]) && !MVT::isVector(LegalVTs[i])) {
- LegalIntVT = LegalVTs[i];
- break;
- }
- assert(LegalIntVT != MVT::Other && "No legal integer VT?");
-
- for (unsigned i = 0, e = BV->getNumChildren(); i != e; ++i)
- MadeChange |= BV->getChild(i)->UpdateNodeType(LegalIntVT, TP);
- }
- return MadeChange;
- } else if (getOperator()->isSubClassOf("Instruction")) {
- const DAGInstruction &Inst = ISE.getInstruction(getOperator());
- bool MadeChange = false;
- unsigned NumResults = Inst.getNumResults();
-
- assert(NumResults <= 1 &&
- "Only supports zero or one result instrs!");
-
- CodeGenInstruction &InstInfo =
- ISE.getTargetInfo().getInstruction(getOperator()->getName());
- // Apply the result type to the node
- if (NumResults == 0 || InstInfo.noResults) { // FIXME: temporary hack...
- MadeChange = UpdateNodeType(MVT::isVoid, TP);
- } else {
- Record *ResultNode = Inst.getResult(0);
- assert(ResultNode->isSubClassOf("RegisterClass") &&
- "Operands should be register classes!");
-
- const CodeGenRegisterClass &RC =
- ISE.getTargetInfo().getRegisterClass(ResultNode);
- MadeChange = UpdateNodeType(ConvertVTs(RC.getValueTypes()), TP);
- }
-
- if (getNumChildren() != Inst.getNumOperands())
- TP.error("Instruction '" + getOperator()->getName() + " expects " +
- utostr(Inst.getNumOperands()) + " operands, not " +
- utostr(getNumChildren()) + " operands!");
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i) {
- Record *OperandNode = Inst.getOperand(i);
- MVT::ValueType VT;
- if (OperandNode->isSubClassOf("RegisterClass")) {
- const CodeGenRegisterClass &RC =
- ISE.getTargetInfo().getRegisterClass(OperandNode);
- //VT = RC.getValueTypeNum(0);
- MadeChange |=getChild(i)->UpdateNodeType(ConvertVTs(RC.getValueTypes()),
- TP);
- } else if (OperandNode->isSubClassOf("Operand")) {
- VT = getValueType(OperandNode->getValueAsDef("Type"));
- MadeChange |= getChild(i)->UpdateNodeType(VT, TP);
- } else {
- assert(0 && "Unknown operand type!");
- abort();
- }
- MadeChange |= getChild(i)->ApplyTypeConstraints(TP, NotRegisters);
- }
- return MadeChange;
- } else {
- assert(getOperator()->isSubClassOf("SDNodeXForm") && "Unknown node type!");
-
- // Node transforms always take one operand.
- if (getNumChildren() != 1)
- TP.error("Node transform '" + getOperator()->getName() +
- "' requires one operand!");
-
- // If either the output or input of the xform does not have exact
- // type info. We assume they must be the same. Otherwise, it is perfectly
- // legal to transform from one type to a completely different type.
- if (!hasTypeSet() || !getChild(0)->hasTypeSet()) {
- bool MadeChange = UpdateNodeType(getChild(0)->getExtTypes(), TP);
- MadeChange |= getChild(0)->UpdateNodeType(getExtTypes(), TP);
- return MadeChange;
- }
- return false;
- }
-}
-
-/// canPatternMatch - If it is impossible for this pattern to match on this
-/// target, fill in Reason and return false. Otherwise, return true. This is
-/// used as a santity check for .td files (to prevent people from writing stuff
-/// that can never possibly work), and to prevent the pattern permuter from
-/// generating stuff that is useless.
-bool TreePatternNode::canPatternMatch(std::string &Reason, DAGISelEmitter &ISE){
- if (isLeaf()) return true;
-
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- if (!getChild(i)->canPatternMatch(Reason, ISE))
- return false;
-
- // If this is an intrinsic, handle cases that would make it not match. For
- // example, if an operand is required to be an immediate.
- if (getOperator()->isSubClassOf("Intrinsic")) {
- // TODO:
- return true;
- }
-
- // If this node is a commutative operator, check that the LHS isn't an
- // immediate.
- const SDNodeInfo &NodeInfo = ISE.getSDNodeInfo(getOperator());
- if (NodeInfo.hasProperty(SDNodeInfo::SDNPCommutative)) {
- // Scan all of the operands of the node and make sure that only the last one
- // is a constant node.
- for (unsigned i = 0, e = getNumChildren()-1; i != e; ++i)
- if (!getChild(i)->isLeaf() &&
- getChild(i)->getOperator()->getName() == "imm") {
- Reason = "Immediate value must be on the RHS of commutative operators!";
- return false;
- }
- }
-
- return true;
-}
-
-//===----------------------------------------------------------------------===//
-// TreePattern implementation
-//
-
-TreePattern::TreePattern(Record *TheRec, ListInit *RawPat, bool isInput,
- DAGISelEmitter &ise) : TheRecord(TheRec), ISE(ise) {
- isInputPattern = isInput;
- for (unsigned i = 0, e = RawPat->getSize(); i != e; ++i)
- Trees.push_back(ParseTreePattern((DagInit*)RawPat->getElement(i)));
-}
-
-TreePattern::TreePattern(Record *TheRec, DagInit *Pat, bool isInput,
- DAGISelEmitter &ise) : TheRecord(TheRec), ISE(ise) {
- isInputPattern = isInput;
- Trees.push_back(ParseTreePattern(Pat));
-}
-
-TreePattern::TreePattern(Record *TheRec, TreePatternNode *Pat, bool isInput,
- DAGISelEmitter &ise) : TheRecord(TheRec), ISE(ise) {
- isInputPattern = isInput;
- Trees.push_back(Pat);
-}
-
-
-
-void TreePattern::error(const std::string &Msg) const {
- dump();
- throw "In " + TheRecord->getName() + ": " + Msg;
-}
-
-TreePatternNode *TreePattern::ParseTreePattern(DagInit *Dag) {
- DefInit *OpDef = dynamic_cast<DefInit*>(Dag->getOperator());
- if (!OpDef) error("Pattern has unexpected operator type!");
- Record *Operator = OpDef->getDef();
-
- if (Operator->isSubClassOf("ValueType")) {
- // If the operator is a ValueType, then this must be "type cast" of a leaf
- // node.
- if (Dag->getNumArgs() != 1)
- error("Type cast only takes one operand!");
-
- Init *Arg = Dag->getArg(0);
- TreePatternNode *New;
- if (DefInit *DI = dynamic_cast<DefInit*>(Arg)) {
- Record *R = DI->getDef();
- if (R->isSubClassOf("SDNode") || R->isSubClassOf("PatFrag")) {
- Dag->setArg(0, new DagInit(DI,
- std::vector<std::pair<Init*, std::string> >()));
- return ParseTreePattern(Dag);
- }
- New = new TreePatternNode(DI);
- } else if (DagInit *DI = dynamic_cast<DagInit*>(Arg)) {
- New = ParseTreePattern(DI);
- } else if (IntInit *II = dynamic_cast<IntInit*>(Arg)) {
- New = new TreePatternNode(II);
- if (!Dag->getArgName(0).empty())
- error("Constant int argument should not have a name!");
- } else if (BitsInit *BI = dynamic_cast<BitsInit*>(Arg)) {
- // Turn this into an IntInit.
- Init *II = BI->convertInitializerTo(new IntRecTy());
- if (II == 0 || !dynamic_cast<IntInit*>(II))
- error("Bits value must be constants!");
-
- New = new TreePatternNode(dynamic_cast<IntInit*>(II));
- if (!Dag->getArgName(0).empty())
- error("Constant int argument should not have a name!");
- } else {
- Arg->dump();
- error("Unknown leaf value for tree pattern!");
- return 0;
- }
-
- // Apply the type cast.
- New->UpdateNodeType(getValueType(Operator), *this);
- New->setName(Dag->getArgName(0));
- return New;
- }
-
- // Verify that this is something that makes sense for an operator.
- if (!Operator->isSubClassOf("PatFrag") && !Operator->isSubClassOf("SDNode") &&
- !Operator->isSubClassOf("Instruction") &&
- !Operator->isSubClassOf("SDNodeXForm") &&
- !Operator->isSubClassOf("Intrinsic") &&
- Operator->getName() != "set")
- error("Unrecognized node '" + Operator->getName() + "'!");
-
- // Check to see if this is something that is illegal in an input pattern.
- if (isInputPattern && (Operator->isSubClassOf("Instruction") ||
- Operator->isSubClassOf("SDNodeXForm")))
- error("Cannot use '" + Operator->getName() + "' in an input pattern!");
-
- std::vector<TreePatternNode*> Children;
-
- for (unsigned i = 0, e = Dag->getNumArgs(); i != e; ++i) {
- Init *Arg = Dag->getArg(i);
- if (DagInit *DI = dynamic_cast<DagInit*>(Arg)) {
- Children.push_back(ParseTreePattern(DI));
- if (Children.back()->getName().empty())
- Children.back()->setName(Dag->getArgName(i));
- } else if (DefInit *DefI = dynamic_cast<DefInit*>(Arg)) {
- Record *R = DefI->getDef();
- // Direct reference to a leaf DagNode or PatFrag? Turn it into a
- // TreePatternNode if its own.
- if (R->isSubClassOf("SDNode") || R->isSubClassOf("PatFrag")) {
- Dag->setArg(i, new DagInit(DefI,
- std::vector<std::pair<Init*, std::string> >()));
- --i; // Revisit this node...
- } else {
- TreePatternNode *Node = new TreePatternNode(DefI);
- Node->setName(Dag->getArgName(i));
- Children.push_back(Node);
-
- // Input argument?
- if (R->getName() == "node") {
- if (Dag->getArgName(i).empty())
- error("'node' argument requires a name to match with operand list");
- Args.push_back(Dag->getArgName(i));
- }
- }
- } else if (IntInit *II = dynamic_cast<IntInit*>(Arg)) {
- TreePatternNode *Node = new TreePatternNode(II);
- if (!Dag->getArgName(i).empty())
- error("Constant int argument should not have a name!");
- Children.push_back(Node);
- } else if (BitsInit *BI = dynamic_cast<BitsInit*>(Arg)) {
- // Turn this into an IntInit.
- Init *II = BI->convertInitializerTo(new IntRecTy());
- if (II == 0 || !dynamic_cast<IntInit*>(II))
- error("Bits value must be constants!");
-
- TreePatternNode *Node = new TreePatternNode(dynamic_cast<IntInit*>(II));
- if (!Dag->getArgName(i).empty())
- error("Constant int argument should not have a name!");
- Children.push_back(Node);
- } else {
- std::cerr << '"';
- Arg->dump();
- std::cerr << "\": ";
- error("Unknown leaf value for tree pattern!");
- }
- }
-
- // If the operator is an intrinsic, then this is just syntactic sugar for for
- // (intrinsic_* <number>, ..children..). Pick the right intrinsic node, and
- // convert the intrinsic name to a number.
- if (Operator->isSubClassOf("Intrinsic")) {
- const CodeGenIntrinsic &Int = getDAGISelEmitter().getIntrinsic(Operator);
- unsigned IID = getDAGISelEmitter().getIntrinsicID(Operator)+1;
-
- // If this intrinsic returns void, it must have side-effects and thus a
- // chain.
- if (Int.ArgVTs[0] == MVT::isVoid) {
- Operator = getDAGISelEmitter().get_intrinsic_void_sdnode();
- } else if (Int.ModRef != CodeGenIntrinsic::NoMem) {
- // Has side-effects, requires chain.
- Operator = getDAGISelEmitter().get_intrinsic_w_chain_sdnode();
- } else {
- // Otherwise, no chain.
- Operator = getDAGISelEmitter().get_intrinsic_wo_chain_sdnode();
- }
-
- TreePatternNode *IIDNode = new TreePatternNode(new IntInit(IID));
- Children.insert(Children.begin(), IIDNode);
- }
-
- return new TreePatternNode(Operator, Children);
-}
-
-/// InferAllTypes - Infer/propagate as many types throughout the expression
-/// patterns as possible. Return true if all types are infered, false
-/// otherwise. Throw an exception if a type contradiction is found.
-bool TreePattern::InferAllTypes() {
- bool MadeChange = true;
- while (MadeChange) {
- MadeChange = false;
- for (unsigned i = 0, e = Trees.size(); i != e; ++i)
- MadeChange |= Trees[i]->ApplyTypeConstraints(*this, false);
- }
-
- bool HasUnresolvedTypes = false;
- for (unsigned i = 0, e = Trees.size(); i != e; ++i)
- HasUnresolvedTypes |= Trees[i]->ContainsUnresolvedType();
- return !HasUnresolvedTypes;
-}
-
-void TreePattern::print(std::ostream &OS) const {
- OS << getRecord()->getName();
- if (!Args.empty()) {
- OS << "(" << Args[0];
- for (unsigned i = 1, e = Args.size(); i != e; ++i)
- OS << ", " << Args[i];
- OS << ")";
- }
- OS << ": ";
-
- if (Trees.size() > 1)
- OS << "[\n";
- for (unsigned i = 0, e = Trees.size(); i != e; ++i) {
- OS << "\t";
- Trees[i]->print(OS);
- OS << "\n";
- }
-
- if (Trees.size() > 1)
- OS << "]\n";
-}
-
-void TreePattern::dump() const { print(std::cerr); }
-
-
-
-//===----------------------------------------------------------------------===//
-// DAGISelEmitter implementation
-//
-
-// Parse all of the SDNode definitions for the target, populating SDNodes.
-void DAGISelEmitter::ParseNodeInfo() {
- std::vector<Record*> Nodes = Records.getAllDerivedDefinitions("SDNode");
- while (!Nodes.empty()) {
- SDNodes.insert(std::make_pair(Nodes.back(), Nodes.back()));
- Nodes.pop_back();
- }
-
- // Get the buildin intrinsic nodes.
- intrinsic_void_sdnode = getSDNodeNamed("intrinsic_void");
- intrinsic_w_chain_sdnode = getSDNodeNamed("intrinsic_w_chain");
- intrinsic_wo_chain_sdnode = getSDNodeNamed("intrinsic_wo_chain");
-}
-
-/// ParseNodeTransforms - Parse all SDNodeXForm instances into the SDNodeXForms
-/// map, and emit them to the file as functions.
-void DAGISelEmitter::ParseNodeTransforms(std::ostream &OS) {
- OS << "\n// Node transformations.\n";
- std::vector<Record*> Xforms = Records.getAllDerivedDefinitions("SDNodeXForm");
- while (!Xforms.empty()) {
- Record *XFormNode = Xforms.back();
- Record *SDNode = XFormNode->getValueAsDef("Opcode");
- std::string Code = XFormNode->getValueAsCode("XFormFunction");
- SDNodeXForms.insert(std::make_pair(XFormNode,
- std::make_pair(SDNode, Code)));
-
- if (!Code.empty()) {
- std::string ClassName = getSDNodeInfo(SDNode).getSDClassName();
- const char *C2 = ClassName == "SDNode" ? "N" : "inN";
-
- OS << "inline SDOperand Transform_" << XFormNode->getName()
- << "(SDNode *" << C2 << ") {\n";
- if (ClassName != "SDNode")
- OS << " " << ClassName << " *N = cast<" << ClassName << ">(inN);\n";
- OS << Code << "\n}\n";
- }
-
- Xforms.pop_back();
- }
-}
-
-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
-/// file, building up the PatternFragments map. After we've collected them all,
-/// inline fragments together as necessary, so that there are no references left
-/// inside a pattern fragment to a pattern fragment.
-///
-/// This also emits all of the predicate functions to the output file.
-///
-void DAGISelEmitter::ParsePatternFragments(std::ostream &OS) {
- std::vector<Record*> Fragments = Records.getAllDerivedDefinitions("PatFrag");
-
- // First step, parse all of the fragments and emit predicate functions.
- OS << "\n// Predicate functions.\n";
- for (unsigned i = 0, e = Fragments.size(); i != e; ++i) {
- DagInit *Tree = Fragments[i]->getValueAsDag("Fragment");
- TreePattern *P = new TreePattern(Fragments[i], Tree, true, *this);
- PatternFragments[Fragments[i]] = P;
-
- // Validate the argument list, converting it to map, to discard duplicates.
- std::vector<std::string> &Args = P->getArgList();
- std::set<std::string> OperandsMap(Args.begin(), Args.end());
-
- if (OperandsMap.count(""))
- P->error("Cannot have unnamed 'node' values in pattern fragment!");
-
- // Parse the operands list.
- DagInit *OpsList = Fragments[i]->getValueAsDag("Operands");
- DefInit *OpsOp = dynamic_cast<DefInit*>(OpsList->getOperator());
- if (!OpsOp || OpsOp->getDef()->getName() != "ops")
- P->error("Operands list should start with '(ops ... '!");
-
- // Copy over the arguments.
- Args.clear();
- for (unsigned j = 0, e = OpsList->getNumArgs(); j != e; ++j) {
- if (!dynamic_cast<DefInit*>(OpsList->getArg(j)) ||
- static_cast<DefInit*>(OpsList->getArg(j))->
- getDef()->getName() != "node")
- P->error("Operands list should all be 'node' values.");
- if (OpsList->getArgName(j).empty())
- P->error("Operands list should have names for each operand!");
- if (!OperandsMap.count(OpsList->getArgName(j)))
- P->error("'" + OpsList->getArgName(j) +
- "' does not occur in pattern or was multiply specified!");
- OperandsMap.erase(OpsList->getArgName(j));
- Args.push_back(OpsList->getArgName(j));
- }
-
- if (!OperandsMap.empty())
- P->error("Operands list does not contain an entry for operand '" +
- *OperandsMap.begin() + "'!");
-
- // If there is a code init for this fragment, emit the predicate code and
- // keep track of the fact that this fragment uses it.
- std::string Code = Fragments[i]->getValueAsCode("Predicate");
- if (!Code.empty()) {
- assert(!P->getOnlyTree()->isLeaf() && "Can't be a leaf!");
- std::string ClassName =
- getSDNodeInfo(P->getOnlyTree()->getOperator()).getSDClassName();
- const char *C2 = ClassName == "SDNode" ? "N" : "inN";
-
- OS << "inline bool Predicate_" << Fragments[i]->getName()
- << "(SDNode *" << C2 << ") {\n";
- if (ClassName != "SDNode")
- OS << " " << ClassName << " *N = cast<" << ClassName << ">(inN);\n";
- OS << Code << "\n}\n";
- P->getOnlyTree()->setPredicateFn("Predicate_"+Fragments[i]->getName());
- }
-
- // If there is a node transformation corresponding to this, keep track of
- // it.
- Record *Transform = Fragments[i]->getValueAsDef("OperandTransform");
- if (!getSDNodeTransform(Transform).second.empty()) // not noop xform?
- P->getOnlyTree()->setTransformFn(Transform);
- }
-
- OS << "\n\n";
-
- // Now that we've parsed all of the tree fragments, do a closure on them so
- // that there are not references to PatFrags left inside of them.
- for (std::map<Record*, TreePattern*>::iterator I = PatternFragments.begin(),
- E = PatternFragments.end(); I != E; ++I) {
- TreePattern *ThePat = I->second;
- ThePat->InlinePatternFragments();
-
- // Infer as many types as possible. Don't worry about it if we don't infer
- // all of them, some may depend on the inputs of the pattern.
- try {
- ThePat->InferAllTypes();
- } catch (...) {
- // If this pattern fragment is not supported by this target (no types can
- // satisfy its constraints), just ignore it. If the bogus pattern is
- // actually used by instructions, the type consistency error will be
- // reported there.
- }
-
- // If debugging, print out the pattern fragment result.
- DEBUG(ThePat->dump());
- }
-}
-
-/// 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::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;
- }
-
- Record *Rec;
- if (Pat->isLeaf()) {
- DefInit *DI = dynamic_cast<DefInit*>(Pat->getLeafValue());
- if (!DI) I->error("Input $" + Pat->getName() + " must be an identifier!");
- Rec = DI->getDef();
- } else {
- assert(Pat->getNumChildren() == 0 && "can't be a use with children!");
- Rec = Pat->getOperator();
- }
-
- // SRCVALUE nodes are ignored.
- if (Rec->getName() == "srcvalue")
- return false;
-
- TreePatternNode *&Slot = InstInputs[Pat->getName()];
- if (!Slot) {
- Slot = Pat;
- } else {
- Record *SlotRec;
- if (Slot->isLeaf()) {
- SlotRec = dynamic_cast<DefInit*>(Slot->getLeafValue())->getDef();
- } else {
- assert(Slot->getNumChildren() == 0 && "can't be a use with children!");
- SlotRec = Slot->getOperator();
- }
-
- // Ensure that the inputs agree if we've already seen this input.
- if (Rec != SlotRec)
- I->error("All $" + Pat->getName() + " inputs must agree with each other");
- if (Slot->getExtTypes() != Pat->getExtTypes())
- I->error("All $" + Pat->getName() + " inputs must agree with each other");
- }
- return true;
-}
-
-/// FindPatternInputsAndOutputs - Scan the specified TreePatternNode (which is
-/// part of "I", the instruction), computing the set of inputs and outputs of
-/// the pattern. Report errors if we see anything naughty.
-void DAGISelEmitter::
-FindPatternInputsAndOutputs(TreePattern *I, TreePatternNode *Pat,
- std::map<std::string, TreePatternNode*> &InstInputs,
- std::map<std::string, TreePatternNode*>&InstResults,
- std::vector<Record*> &InstImpInputs,
- std::vector<Record*> &InstImpResults) {
- if (Pat->isLeaf()) {
- bool isUse = HandleUse(I, Pat, InstInputs, InstImpInputs);
- if (!isUse && Pat->getTransformFn())
- I->error("Cannot specify a transform function for a non-input value!");
- return;
- } else if (Pat->getOperator()->getName() != "set") {
- // If this is not a set, verify that the children nodes are not void typed,
- // and recurse.
- for (unsigned i = 0, e = Pat->getNumChildren(); i != e; ++i) {
- if (Pat->getChild(i)->getExtTypeNum(0) == MVT::isVoid)
- I->error("Cannot have void nodes inside of patterns!");
- 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, InstImpInputs);
-
- if (!isUse && Pat->getTransformFn())
- I->error("Cannot specify a transform function for a non-input value!");
- return;
- }
-
- // Otherwise, this is a set, validate and collect instruction results.
- if (Pat->getNumChildren() == 0)
- I->error("set requires operands!");
- else if (Pat->getNumChildren() & 1)
- I->error("set requires an even number of operands");
-
- if (Pat->getTransformFn())
- I->error("Cannot specify a transform function on a set node!");
-
- // Check the set destinations.
- unsigned NumValues = Pat->getNumChildren()/2;
- for (unsigned i = 0; i != NumValues; ++i) {
- TreePatternNode *Dest = Pat->getChild(i);
- if (!Dest->isLeaf())
- I->error("set destination should be a register!");
-
- DefInit *Val = dynamic_cast<DefInit*>(Dest->getLeafValue());
- if (!Val)
- 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()] = Dest;
- } else if (Val->getDef()->isSubClassOf("Register")) {
- InstImpResults.push_back(Val->getDef());
- } else {
- I->error("set destination should be a register!");
- }
-
- // Verify and collect info from the computation.
- FindPatternInputsAndOutputs(I, Pat->getChild(i+NumValues),
- InstInputs, InstResults,
- InstImpInputs, InstImpResults);
- }
-}
-
-/// ParseInstructions - Parse all of the instructions, inlining and resolving
-/// any fragments involved. This populates the Instructions list with fully
-/// resolved instructions.
-void DAGISelEmitter::ParseInstructions() {
- std::vector<Record*> Instrs = Records.getAllDerivedDefinitions("Instruction");
-
- for (unsigned i = 0, e = Instrs.size(); i != e; ++i) {
- ListInit *LI = 0;
-
- if (dynamic_cast<ListInit*>(Instrs[i]->getValueInit("Pattern")))
- LI = Instrs[i]->getValueAsListInit("Pattern");
-
- // If there is no pattern, only collect minimal information about the
- // instruction for its operand list. We have to assume that there is one
- // result, as we have no detailed info.
- if (!LI || LI->getSize() == 0) {
- std::vector<Record*> Results;
- std::vector<Record*> Operands;
-
- CodeGenInstruction &InstInfo =Target.getInstruction(Instrs[i]->getName());
-
- if (InstInfo.OperandList.size() != 0) {
- // FIXME: temporary hack...
- if (InstInfo.noResults) {
- // These produce no results
- for (unsigned j = 0, e = InstInfo.OperandList.size(); j < e; ++j)
- Operands.push_back(InstInfo.OperandList[j].Rec);
- } else {
- // Assume the first operand is the result.
- Results.push_back(InstInfo.OperandList[0].Rec);
-
- // The rest are inputs.
- for (unsigned j = 1, e = InstInfo.OperandList.size(); j < e; ++j)
- Operands.push_back(InstInfo.OperandList[j].Rec);
- }
- }
-
- // Create and insert the instruction.
- std::vector<Record*> ImpResults;
- std::vector<Record*> ImpOperands;
- Instructions.insert(std::make_pair(Instrs[i],
- DAGInstruction(0, Results, Operands, ImpResults,
- ImpOperands)));
- continue; // no pattern.
- }
-
- // Parse the instruction.
- TreePattern *I = new TreePattern(Instrs[i], LI, true, *this);
- // Inline pattern fragments into it.
- I->InlinePatternFragments();
-
- // Infer as many types as possible. If we cannot infer all of them, we can
- // never do anything with this instruction pattern: report it to the user.
- if (!I->InferAllTypes())
- I->error("Could not infer all types in pattern!");
-
- // InstInputs - Keep track of all of the inputs of the instruction, along
- // with the record they are declared as.
- std::map<std::string, TreePatternNode*> InstInputs;
-
- // InstResults - Keep track of all the virtual registers that are 'set'
- // in the instruction, including what reg class they are.
- std::map<std::string, TreePatternNode*> 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.
- for (unsigned j = 0, e = I->getNumTrees(); j != e; ++j) {
- TreePatternNode *Pat = I->getTree(j);
- if (Pat->getExtTypeNum(0) != MVT::isVoid)
- I->error("Top-level forms in instruction pattern should have"
- " void types");
-
- // Find inputs and outputs, and verify the structure of the uses/defs.
- FindPatternInputsAndOutputs(I, Pat, InstInputs, InstResults,
- InstImpInputs, InstImpResults);
- }
-
- // Now that we have inputs and outputs of the pattern, inspect the operands
- // list for the instruction. This determines the order that operands are
- // added to the machine instruction the node corresponds to.
- unsigned NumResults = InstResults.size();
-
- // Parse the operands list from the (ops) list, validating it.
- std::vector<std::string> &Args = I->getArgList();
- assert(Args.empty() && "Args list should still be empty here!");
- CodeGenInstruction &CGI = Target.getInstruction(Instrs[i]->getName());
-
- // Check that all of the results occur first in the list.
- std::vector<Record*> Results;
- TreePatternNode *Res0Node = NULL;
- for (unsigned i = 0; i != NumResults; ++i) {
- if (i == CGI.OperandList.size())
- I->error("'" + InstResults.begin()->first +
- "' set but does not appear in operand list!");
- const std::string &OpName = CGI.OperandList[i].Name;
-
- // Check that it exists in InstResults.
- TreePatternNode *RNode = InstResults[OpName];
- if (RNode == 0)
- I->error("Operand $" + OpName + " does not exist in operand list!");
-
- if (i == 0)
- Res0Node = RNode;
- Record *R = dynamic_cast<DefInit*>(RNode->getLeafValue())->getDef();
- if (R == 0)
- I->error("Operand $" + OpName + " should be a set destination: all "
- "outputs must occur before inputs in operand list!");
-
- if (CGI.OperandList[i].Rec != R)
- I->error("Operand $" + OpName + " class mismatch!");
-
- // Remember the return type.
- Results.push_back(CGI.OperandList[i].Rec);
-
- // Okay, this one checks out.
- InstResults.erase(OpName);
- }
-
- // Loop over the inputs next. Make a copy of InstInputs so we can destroy
- // the copy while we're checking the inputs.
- std::map<std::string, TreePatternNode*> InstInputsCheck(InstInputs);
-
- std::vector<TreePatternNode*> ResultNodeOperands;
- std::vector<Record*> Operands;
- for (unsigned i = NumResults, e = CGI.OperandList.size(); i != e; ++i) {
- const std::string &OpName = CGI.OperandList[i].Name;
- if (OpName.empty())
- I->error("Operand #" + utostr(i) + " in operands list has no name!");
-
- if (!InstInputsCheck.count(OpName))
- I->error("Operand $" + OpName +
- " does not appear in the instruction pattern");
- TreePatternNode *InVal = InstInputsCheck[OpName];
- InstInputsCheck.erase(OpName); // It occurred, remove from map.
-
- if (InVal->isLeaf() &&
- dynamic_cast<DefInit*>(InVal->getLeafValue())) {
- Record *InRec = static_cast<DefInit*>(InVal->getLeafValue())->getDef();
- if (CGI.OperandList[i].Rec != InRec &&
- !InRec->isSubClassOf("ComplexPattern"))
- I->error("Operand $" + OpName + "'s register class disagrees"
- " between the operand and pattern");
- }
- Operands.push_back(CGI.OperandList[i].Rec);
-
- // Construct the result for the dest-pattern operand list.
- TreePatternNode *OpNode = InVal->clone();
-
- // No predicate is useful on the result.
- OpNode->setPredicateFn("");
-
- // Promote the xform function to be an explicit node if set.
- if (Record *Xform = OpNode->getTransformFn()) {
- OpNode->setTransformFn(0);
- std::vector<TreePatternNode*> Children;
- Children.push_back(OpNode);
- OpNode = new TreePatternNode(Xform, Children);
- }
-
- ResultNodeOperands.push_back(OpNode);
- }
-
- if (!InstInputsCheck.empty())
- I->error("Input operand $" + InstInputsCheck.begin()->first +
- " occurs in pattern but not in operands list!");
-
- TreePatternNode *ResultPattern =
- new TreePatternNode(I->getRecord(), ResultNodeOperands);
- // Copy fully inferred output node type to instruction result pattern.
- if (NumResults > 0)
- ResultPattern->setTypes(Res0Node->getExtTypes());
-
- // Create and insert the instruction.
- 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
- // constructed result is correct. This depends on the instruction already
- // being inserted into the Instructions map.
- TreePattern Temp(I->getRecord(), ResultPattern, false, *this);
- Temp.InferAllTypes();
-
- DAGInstruction &TheInsertedInst = Instructions.find(I->getRecord())->second;
- TheInsertedInst.setResultPattern(Temp.getOnlyTree());
-
- DEBUG(I->dump());
- }
-
- // If we can, convert the instructions to be patterns that are matched!
- for (std::map<Record*, DAGInstruction>::iterator II = Instructions.begin(),
- E = Instructions.end(); II != E; ++II) {
- 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 (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(PatternToMatch(Instr->getValueAsListInit("Predicates"),
- SrcPattern, DstPattern,
- Instr->getValueAsInt("AddedComplexity")));
- }
-}
-
-void DAGISelEmitter::ParsePatterns() {
- std::vector<Record*> Patterns = Records.getAllDerivedDefinitions("Pattern");
-
- for (unsigned i = 0, e = Patterns.size(); i != e; ++i) {
- DagInit *Tree = Patterns[i]->getValueAsDag("PatternToMatch");
- TreePattern *Pattern = new TreePattern(Patterns[i], Tree, true, *this);
-
- // Inline pattern fragments into it.
- Pattern->InlinePatternFragments();
-
- ListInit *LI = Patterns[i]->getValueAsListInit("ResultInstrs");
- if (LI->getSize() == 0) continue; // no pattern.
-
- // Parse the instruction.
- TreePattern *Result = new TreePattern(Patterns[i], LI, false, *this);
-
- // Inline pattern fragments into it.
- Result->InlinePatternFragments();
-
- if (Result->getNumTrees() != 1)
- Result->error("Cannot handle instructions producing instructions "
- "with temporaries yet!");
-
- bool IterateInference;
- bool InferredAllPatternTypes, InferredAllResultTypes;
- do {
- // Infer as many types as possible. If we cannot infer all of them, we
- // can never do anything with this pattern: report it to the user.
- InferredAllPatternTypes = Pattern->InferAllTypes();
-
- // Infer as many types as possible. If we cannot infer all of them, we can
- // never do anything with this pattern: report it to the user.
- InferredAllResultTypes = Result->InferAllTypes();
-
- // Apply the type of the result to the source pattern. This helps us
- // resolve cases where the input type is known to be a pointer type (which
- // is considered resolved), but the result knows it needs to be 32- or
- // 64-bits. Infer the other way for good measure.
- IterateInference = Pattern->getOnlyTree()->
- UpdateNodeType(Result->getOnlyTree()->getExtTypes(), *Result);
- IterateInference |= Result->getOnlyTree()->
- UpdateNodeType(Pattern->getOnlyTree()->getExtTypes(), *Result);
- } while (IterateInference);
-
- // Verify that we inferred enough types that we can do something with the
- // pattern and result. If these fire the user has to add type casts.
- if (!InferredAllPatternTypes)
- Pattern->error("Could not infer all types in pattern!");
- if (!InferredAllResultTypes)
- Result->error("Could not infer all types in pattern result!");
-
- // Validate that the input pattern is correct.
- {
- std::map<std::string, TreePatternNode*> InstInputs;
- std::map<std::string, TreePatternNode*> InstResults;
- std::vector<Record*> InstImpInputs;
- std::vector<Record*> InstImpResults;
- FindPatternInputsAndOutputs(Pattern, Pattern->getOnlyTree(),
- InstInputs, InstResults,
- InstImpInputs, InstImpResults);
- }
-
- // Promote the xform function to be an explicit node if set.
- std::vector<TreePatternNode*> ResultNodeOperands;
- TreePatternNode *DstPattern = Result->getOnlyTree();
- for (unsigned ii = 0, ee = DstPattern->getNumChildren(); ii != ee; ++ii) {
- TreePatternNode *OpNode = DstPattern->getChild(ii);
- if (Record *Xform = OpNode->getTransformFn()) {
- OpNode->setTransformFn(0);
- std::vector<TreePatternNode*> Children;
- Children.push_back(OpNode);
- OpNode = new TreePatternNode(Xform, Children);
- }
- ResultNodeOperands.push_back(OpNode);
- }
- DstPattern = Result->getOnlyTree();
- if (!DstPattern->isLeaf())
- DstPattern = new TreePatternNode(DstPattern->getOperator(),
- ResultNodeOperands);
- DstPattern->setTypes(Result->getOnlyTree()->getExtTypes());
- TreePattern Temp(Result->getRecord(), DstPattern, false, *this);
- Temp.InferAllTypes();
-
- std::string Reason;
- if (!Pattern->getOnlyTree()->canPatternMatch(Reason, *this))
- Pattern->error("Pattern can never match: " + Reason);
-
- PatternsToMatch.
- push_back(PatternToMatch(Patterns[i]->getValueAsListInit("Predicates"),
- Pattern->getOnlyTree(),
- Temp.getOnlyTree(),
- Patterns[i]->getValueAsInt("AddedComplexity")));
- }
-}
-
-/// CombineChildVariants - Given a bunch of permutations of each child of the
-/// 'operator' node, put them together in all possible ways.
-static void CombineChildVariants(TreePatternNode *Orig,
- const std::vector<std::vector<TreePatternNode*> > &ChildVariants,
- std::vector<TreePatternNode*> &OutVariants,
- DAGISelEmitter &ISE) {
- // Make sure that each operand has at least one variant to choose from.
- for (unsigned i = 0, e = ChildVariants.size(); i != e; ++i)
- if (ChildVariants[i].empty())
- return;
-
- // The end result is an all-pairs construction of the resultant pattern.
- std::vector<unsigned> Idxs;
- Idxs.resize(ChildVariants.size());
- bool NotDone = true;
- while (NotDone) {
- // Create the variant and add it to the output list.
- std::vector<TreePatternNode*> NewChildren;
- for (unsigned i = 0, e = ChildVariants.size(); i != e; ++i)
- NewChildren.push_back(ChildVariants[i][Idxs[i]]);
- TreePatternNode *R = new TreePatternNode(Orig->getOperator(), NewChildren);
-
- // Copy over properties.
- R->setName(Orig->getName());
- R->setPredicateFn(Orig->getPredicateFn());
- R->setTransformFn(Orig->getTransformFn());
- R->setTypes(Orig->getExtTypes());
-
- // If this pattern cannot every match, do not include it as a variant.
- std::string ErrString;
- if (!R->canPatternMatch(ErrString, ISE)) {
- delete R;
- } else {
- bool AlreadyExists = false;
-
- // Scan to see if this pattern has already been emitted. We can get
- // duplication due to things like commuting:
- // (and GPRC:$a, GPRC:$b) -> (and GPRC:$b, GPRC:$a)
- // which are the same pattern. Ignore the dups.
- for (unsigned i = 0, e = OutVariants.size(); i != e; ++i)
- if (R->isIsomorphicTo(OutVariants[i])) {
- AlreadyExists = true;
- break;
- }
-
- if (AlreadyExists)
- delete R;
- else
- OutVariants.push_back(R);
- }
-
- // Increment indices to the next permutation.
- NotDone = false;
- // Look for something we can increment without causing a wrap-around.
- for (unsigned IdxsIdx = 0; IdxsIdx != Idxs.size(); ++IdxsIdx) {
- if (++Idxs[IdxsIdx] < ChildVariants[IdxsIdx].size()) {
- NotDone = true; // Found something to increment.
- break;
- }
- Idxs[IdxsIdx] = 0;
- }
- }
-}
-
-/// CombineChildVariants - A helper function for binary operators.
-///
-static void CombineChildVariants(TreePatternNode *Orig,
- const std::vector<TreePatternNode*> &LHS,
- const std::vector<TreePatternNode*> &RHS,
- std::vector<TreePatternNode*> &OutVariants,
- DAGISelEmitter &ISE) {
- std::vector<std::vector<TreePatternNode*> > ChildVariants;
- ChildVariants.push_back(LHS);
- ChildVariants.push_back(RHS);
- CombineChildVariants(Orig, ChildVariants, OutVariants, ISE);
-}
-
-
-static void GatherChildrenOfAssociativeOpcode(TreePatternNode *N,
- std::vector<TreePatternNode *> &Children) {
- assert(N->getNumChildren()==2 &&"Associative but doesn't have 2 children!");
- Record *Operator = N->getOperator();
-
- // Only permit raw nodes.
- if (!N->getName().empty() || !N->getPredicateFn().empty() ||
- N->getTransformFn()) {
- Children.push_back(N);
- return;
- }
-
- if (N->getChild(0)->isLeaf() || N->getChild(0)->getOperator() != Operator)
- Children.push_back(N->getChild(0));
- else
- GatherChildrenOfAssociativeOpcode(N->getChild(0), Children);
-
- if (N->getChild(1)->isLeaf() || N->getChild(1)->getOperator() != Operator)
- Children.push_back(N->getChild(1));
- else
- GatherChildrenOfAssociativeOpcode(N->getChild(1), Children);
-}
-
-/// GenerateVariantsOf - Given a pattern N, generate all permutations we can of
-/// the (potentially recursive) pattern by using algebraic laws.
-///
-static void GenerateVariantsOf(TreePatternNode *N,
- std::vector<TreePatternNode*> &OutVariants,
- DAGISelEmitter &ISE) {
- // We cannot permute leaves.
- if (N->isLeaf()) {
- OutVariants.push_back(N);
- return;
- }
-
- // Look up interesting info about the node.
- const SDNodeInfo &NodeInfo = ISE.getSDNodeInfo(N->getOperator());
-
- // If this node is associative, reassociate.
- if (NodeInfo.hasProperty(SDNodeInfo::SDNPAssociative)) {
- // Reassociate by pulling together all of the linked operators
- std::vector<TreePatternNode*> MaximalChildren;
- GatherChildrenOfAssociativeOpcode(N, MaximalChildren);
-
- // Only handle child sizes of 3. Otherwise we'll end up trying too many
- // permutations.
- if (MaximalChildren.size() == 3) {
- // Find the variants of all of our maximal children.
- std::vector<TreePatternNode*> AVariants, BVariants, CVariants;
- GenerateVariantsOf(MaximalChildren[0], AVariants, ISE);
- GenerateVariantsOf(MaximalChildren[1], BVariants, ISE);
- GenerateVariantsOf(MaximalChildren[2], CVariants, ISE);
-
- // There are only two ways we can permute the tree:
- // (A op B) op C and A op (B op C)
- // Within these forms, we can also permute A/B/C.
-
- // Generate legal pair permutations of A/B/C.
- std::vector<TreePatternNode*> ABVariants;
- std::vector<TreePatternNode*> BAVariants;
- std::vector<TreePatternNode*> ACVariants;
- std::vector<TreePatternNode*> CAVariants;
- std::vector<TreePatternNode*> BCVariants;
- std::vector<TreePatternNode*> CBVariants;
- CombineChildVariants(N, AVariants, BVariants, ABVariants, ISE);
- CombineChildVariants(N, BVariants, AVariants, BAVariants, ISE);
- CombineChildVariants(N, AVariants, CVariants, ACVariants, ISE);
- CombineChildVariants(N, CVariants, AVariants, CAVariants, ISE);
- CombineChildVariants(N, BVariants, CVariants, BCVariants, ISE);
- CombineChildVariants(N, CVariants, BVariants, CBVariants, ISE);
-
- // Combine those into the result: (x op x) op x
- CombineChildVariants(N, ABVariants, CVariants, OutVariants, ISE);
- CombineChildVariants(N, BAVariants, CVariants, OutVariants, ISE);
- CombineChildVariants(N, ACVariants, BVariants, OutVariants, ISE);
- CombineChildVariants(N, CAVariants, BVariants, OutVariants, ISE);
- CombineChildVariants(N, BCVariants, AVariants, OutVariants, ISE);
- CombineChildVariants(N, CBVariants, AVariants, OutVariants, ISE);
-
- // Combine those into the result: x op (x op x)
- CombineChildVariants(N, CVariants, ABVariants, OutVariants, ISE);
- CombineChildVariants(N, CVariants, BAVariants, OutVariants, ISE);
- CombineChildVariants(N, BVariants, ACVariants, OutVariants, ISE);
- CombineChildVariants(N, BVariants, CAVariants, OutVariants, ISE);
- CombineChildVariants(N, AVariants, BCVariants, OutVariants, ISE);
- CombineChildVariants(N, AVariants, CBVariants, OutVariants, ISE);
- return;
- }
- }
-
- // Compute permutations of all children.
- std::vector<std::vector<TreePatternNode*> > ChildVariants;
- ChildVariants.resize(N->getNumChildren());
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i)
- GenerateVariantsOf(N->getChild(i), ChildVariants[i], ISE);
-
- // Build all permutations based on how the children were formed.
- CombineChildVariants(N, ChildVariants, OutVariants, ISE);
-
- // If this node is commutative, consider the commuted order.
- if (NodeInfo.hasProperty(SDNodeInfo::SDNPCommutative)) {
- assert(N->getNumChildren()==2 &&"Commutative but doesn't have 2 children!");
- // Don't count children which are actually register references.
- unsigned NC = 0;
- for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i) {
- TreePatternNode *Child = N->getChild(i);
- if (Child->isLeaf())
- if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
- Record *RR = DI->getDef();
- if (RR->isSubClassOf("Register"))
- continue;
- }
- NC++;
- }
- // Consider the commuted order.
- if (NC == 2)
- CombineChildVariants(N, ChildVariants[1], ChildVariants[0],
- OutVariants, ISE);
- }
-}
-
-
-// GenerateVariants - Generate variants. For example, commutative patterns can
-// match multiple ways. Add them to PatternsToMatch as well.
-void DAGISelEmitter::GenerateVariants() {
-
- DEBUG(std::cerr << "Generating instruction variants.\n");
-
- // Loop over all of the patterns we've collected, checking to see if we can
- // generate variants of the instruction, through the exploitation of
- // identities. This permits the target to provide agressive matching without
- // the .td file having to contain tons of variants of instructions.
- //
- // Note that this loop adds new patterns to the PatternsToMatch list, but we
- // intentionally do not reconsider these. Any variants of added patterns have
- // already been added.
- //
- for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i) {
- std::vector<TreePatternNode*> Variants;
- GenerateVariantsOf(PatternsToMatch[i].getSrcPattern(), Variants, *this);
-
- assert(!Variants.empty() && "Must create at least original variant!");
- Variants.erase(Variants.begin()); // Remove the original pattern.
-
- if (Variants.empty()) // No variants for this pattern.
- continue;
-
- DEBUG(std::cerr << "FOUND VARIANTS OF: ";
- PatternsToMatch[i].getSrcPattern()->dump();
- std::cerr << "\n");
-
- for (unsigned v = 0, e = Variants.size(); v != e; ++v) {
- TreePatternNode *Variant = Variants[v];
-
- DEBUG(std::cerr << " VAR#" << v << ": ";
- Variant->dump();
- std::cerr << "\n");
-
- // Scan to see if an instruction or explicit pattern already matches this.
- 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].getSrcPattern())) {
- DEBUG(std::cerr << " *** ALREADY EXISTS, ignoring variant.\n");
- AlreadyExists = true;
- break;
- }
- }
- // If we already have it, ignore the variant.
- if (AlreadyExists) continue;
-
- // Otherwise, add it to the list of patterns we have.
- PatternsToMatch.
- push_back(PatternToMatch(PatternsToMatch[i].getPredicates(),
- Variant, PatternsToMatch[i].getDstPattern(),
- PatternsToMatch[i].getAddedComplexity()));
- }
-
- DEBUG(std::cerr << "\n");
- }
-}
-
+// DAGISelEmitter Helper methods
+//
-// NodeIsComplexPattern - return true if N is a leaf node and a subclass of
-// ComplexPattern.
-static bool NodeIsComplexPattern(TreePatternNode *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.
+/// 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)
-{
+ CodeGenDAGPatterns &CGP) {
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 &CGP.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, DAGISelEmitter &ISE) {
- assert((isExtIntegerInVTs(P->getExtTypes()) ||
- isExtFloatingPointInVTs(P->getExtTypes()) ||
+static unsigned getPatternSize(TreePatternNode *P, CodeGenDAGPatterns &CGP) {
+ assert((MVT::isExtIntegerInVTs(P->getExtTypes()) ||
+ MVT::isExtFloatingPointInVTs(P->getExtTypes()) ||
P->getExtTypeNum(0) == MVT::isVoid ||
P->getExtTypeNum(0) == MVT::Flag ||
P->getExtTypeNum(0) == MVT::iPTR) &&
"Not a valid pattern node to size!");
- unsigned Size = 2; // The node itself.
+ unsigned Size = 3; // The node itself.
// If the root node is a ConstantSDNode, increases its size.
// e.g. (set R32:$dst, 0).
if (P->isLeaf() && dynamic_cast<IntInit*>(P->getLeafValue()))
- Size++;
+ Size += 2;
// 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);
+ const ComplexPattern *AM = NodeGetComplexPattern(P, CGP);
if (AM)
- Size += AM->getNumOperands() * 2;
+ Size += AM->getNumOperands() * 3;
// If this node has some predicate function that must match, it adds to the
// complexity of this node.
for (unsigned i = 0, e = P->getNumChildren(); i != e; ++i) {
TreePatternNode *Child = P->getChild(i);
if (!Child->isLeaf() && Child->getExtTypeNum(0) != MVT::Other)
- Size += getPatternSize(Child, ISE);
+ Size += getPatternSize(Child, CGP);
else if (Child->isLeaf()) {
if (dynamic_cast<IntInit*>(Child->getLeafValue()))
- Size += 3; // Matches a ConstantSDNode (+2) and a specific value (+1).
+ Size += 5; // Matches a ConstantSDNode (+3) and a specific value (+2).
else if (NodeIsComplexPattern(Child))
- Size += getPatternSize(Child, ISE);
+ Size += getPatternSize(Child, CGP);
else if (!Child->getPredicateFn().empty())
++Size;
}
/// getResultPatternCost - Compute the number of instructions for this pattern.
/// This is a temporary hack. We should really include the instruction
/// latencies in this calculation.
-static unsigned getResultPatternCost(TreePatternNode *P, DAGISelEmitter &ISE) {
+static unsigned getResultPatternCost(TreePatternNode *P,
+ CodeGenDAGPatterns &CGP) {
if (P->isLeaf()) return 0;
unsigned Cost = 0;
Record *Op = P->getOperator();
if (Op->isSubClassOf("Instruction")) {
Cost++;
- CodeGenInstruction &II = ISE.getTargetInfo().getInstruction(Op->getName());
+ CodeGenInstruction &II = CGP.getTargetInfo().getInstruction(Op->getName());
if (II.usesCustomDAGSchedInserter)
Cost += 10;
}
for (unsigned i = 0, e = P->getNumChildren(); i != e; ++i)
- Cost += getResultPatternCost(P->getChild(i), ISE);
+ Cost += getResultPatternCost(P->getChild(i), CGP);
return Cost;
}
/// getResultPatternCodeSize - Compute the code size of instructions for this
/// pattern.
-static unsigned getResultPatternSize(TreePatternNode *P, DAGISelEmitter &ISE) {
+static unsigned getResultPatternSize(TreePatternNode *P,
+ CodeGenDAGPatterns &CGP) {
if (P->isLeaf()) return 0;
unsigned Cost = 0;
Cost += Op->getValueAsInt("CodeSize");
}
for (unsigned i = 0, e = P->getNumChildren(); i != e; ++i)
- Cost += getResultPatternSize(P->getChild(i), ISE);
+ Cost += getResultPatternSize(P->getChild(i), CGP);
return Cost;
}
// In particular, we want to match maximal patterns first and lowest cost within
// a particular complexity first.
struct PatternSortingPredicate {
- PatternSortingPredicate(DAGISelEmitter &ise) : ISE(ise) {};
- DAGISelEmitter &ISE;
+ PatternSortingPredicate(CodeGenDAGPatterns &cgp) : CGP(cgp) {}
+ CodeGenDAGPatterns &CGP;
- bool operator()(PatternToMatch *LHS,
- PatternToMatch *RHS) {
- unsigned LHSSize = getPatternSize(LHS->getSrcPattern(), ISE);
- unsigned RHSSize = getPatternSize(RHS->getSrcPattern(), ISE);
+ bool operator()(const PatternToMatch *LHS,
+ const PatternToMatch *RHS) {
+ unsigned LHSSize = getPatternSize(LHS->getSrcPattern(), CGP);
+ unsigned RHSSize = getPatternSize(RHS->getSrcPattern(), CGP);
LHSSize += LHS->getAddedComplexity();
RHSSize += RHS->getAddedComplexity();
if (LHSSize > RHSSize) return true; // LHS -> bigger -> less cost
if (LHSSize < RHSSize) return false;
// If the patterns have equal complexity, compare generated instruction cost
- unsigned LHSCost = getResultPatternCost(LHS->getDstPattern(), ISE);
- unsigned RHSCost = getResultPatternCost(RHS->getDstPattern(), ISE);
+ unsigned LHSCost = getResultPatternCost(LHS->getDstPattern(), CGP);
+ unsigned RHSCost = getResultPatternCost(RHS->getDstPattern(), CGP);
if (LHSCost < RHSCost) return true;
if (LHSCost > RHSCost) return false;
- return getResultPatternSize(LHS->getDstPattern(), ISE) <
- getResultPatternSize(RHS->getDstPattern(), ISE);
+ return getResultPatternSize(LHS->getDstPattern(), CGP) <
+ getResultPatternSize(RHS->getDstPattern(), CGP);
}
};
RemoveAllTypes(N->getChild(i));
}
-Record *DAGISelEmitter::getSDNodeNamed(const std::string &Name) const {
- Record *N = Records.getDef(Name);
- if (!N || !N->isSubClassOf("SDNode")) {
- std::cerr << "Error getting SDNode '" << Name << "'!\n";
- exit(1);
- }
- return N;
-}
-
/// NodeHasProperty - return true if TreePatternNode has the specified
/// property.
-static bool NodeHasProperty(TreePatternNode *N, SDNodeInfo::SDNP Property,
- DAGISelEmitter &ISE)
-{
- if (N->isLeaf()) return false;
+static bool NodeHasProperty(TreePatternNode *N, SDNP Property,
+ CodeGenDAGPatterns &CGP) {
+ if (N->isLeaf()) {
+ const ComplexPattern *CP = NodeGetComplexPattern(N, CGP);
+ if (CP)
+ return CP->hasProperty(Property);
+ return false;
+ }
Record *Operator = N->getOperator();
if (!Operator->isSubClassOf("SDNode")) return false;
- const SDNodeInfo &NodeInfo = ISE.getSDNodeInfo(Operator);
- return NodeInfo.hasProperty(Property);
+ return CGP.getSDNodeInfo(Operator).hasProperty(Property);
}
-static bool PatternHasProperty(TreePatternNode *N, SDNodeInfo::SDNP Property,
- DAGISelEmitter &ISE)
-{
- if (NodeHasProperty(N, Property, ISE))
+static bool PatternHasProperty(TreePatternNode *N, SDNP Property,
+ CodeGenDAGPatterns &CGP) {
+ if (NodeHasProperty(N, Property, CGP))
return true;
for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i) {
TreePatternNode *Child = N->getChild(i);
- if (PatternHasProperty(Child, Property, ISE))
+ if (PatternHasProperty(Child, Property, CGP))
return true;
}
return false;
}
+//===----------------------------------------------------------------------===//
+// Node Transformation emitter implementation.
+//
+void DAGISelEmitter::EmitNodeTransforms(std::ostream &OS) {
+ // Walk the pattern fragments, adding them to a map, which sorts them by
+ // name.
+ typedef std::map<std::string, CodeGenDAGPatterns::NodeXForm> NXsByNameTy;
+ NXsByNameTy NXsByName;
+
+ for (CodeGenDAGPatterns::nx_iterator I = CGP.nx_begin(), E = CGP.nx_end();
+ I != E; ++I)
+ NXsByName.insert(std::make_pair(I->first->getName(), I->second));
+
+ OS << "\n// Node transformations.\n";
+
+ for (NXsByNameTy::iterator I = NXsByName.begin(), E = NXsByName.end();
+ I != E; ++I) {
+ Record *SDNode = I->second.first;
+ std::string Code = I->second.second;
+
+ if (Code.empty()) continue; // Empty code? Skip it.
+
+ std::string ClassName = CGP.getSDNodeInfo(SDNode).getSDClassName();
+ const char *C2 = ClassName == "SDNode" ? "N" : "inN";
+
+ OS << "inline SDOperand Transform_" << I->first << "(SDNode *" << C2
+ << ") {\n";
+ if (ClassName != "SDNode")
+ OS << " " << ClassName << " *N = cast<" << ClassName << ">(inN);\n";
+ OS << Code << "\n}\n";
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// Predicate emitter implementation.
+//
+
+void DAGISelEmitter::EmitPredicateFunctions(std::ostream &OS) {
+ OS << "\n// Predicate functions.\n";
+
+ // Walk the pattern fragments, adding them to a map, which sorts them by
+ // name.
+ typedef std::map<std::string, std::pair<Record*, TreePattern*> > PFsByNameTy;
+ PFsByNameTy PFsByName;
+
+ for (CodeGenDAGPatterns::pf_iterator I = CGP.pf_begin(), E = CGP.pf_end();
+ I != E; ++I)
+ PFsByName.insert(std::make_pair(I->first->getName(), *I));
+
+
+ for (PFsByNameTy::iterator I = PFsByName.begin(), E = PFsByName.end();
+ I != E; ++I) {
+ Record *PatFragRecord = I->second.first;// Record that derives from PatFrag.
+ TreePattern *P = I->second.second;
+
+ // If there is a code init for this fragment, emit the predicate code.
+ std::string Code = PatFragRecord->getValueAsCode("Predicate");
+ if (Code.empty()) continue;
+
+ if (P->getOnlyTree()->isLeaf())
+ OS << "inline bool Predicate_" << PatFragRecord->getName()
+ << "(SDNode *N) {\n";
+ else {
+ std::string ClassName =
+ CGP.getSDNodeInfo(P->getOnlyTree()->getOperator()).getSDClassName();
+ const char *C2 = ClassName == "SDNode" ? "N" : "inN";
+
+ OS << "inline bool Predicate_" << PatFragRecord->getName()
+ << "(SDNode *" << C2 << ") {\n";
+ if (ClassName != "SDNode")
+ OS << " " << ClassName << " *N = cast<" << ClassName << ">(inN);\n";
+ }
+ OS << Code << "\n}\n";
+ }
+
+ OS << "\n\n";
+}
+
+
+//===----------------------------------------------------------------------===//
+// PatternCodeEmitter implementation.
+//
class PatternCodeEmitter {
private:
- DAGISelEmitter &ISE;
+ CodeGenDAGPatterns &CGP;
// Predicates.
ListInit *Predicates;
std::map<std::string, std::string> VariableMap;
// Node to operator mapping
std::map<std::string, Record*> OperatorMap;
+ // Name of the folded node which produces a flag.
+ std::pair<std::string, unsigned> FoldedFlag;
// Names of all the folded nodes which produce chains.
std::vector<std::pair<std::string, unsigned> > FoldedChains;
+ // Original input chain(s).
+ std::vector<std::pair<std::string, std::string> > OrigChains;
std::set<std::string> Duplicates;
- /// GeneratedCode - This is the buffer that we emit code to. The first bool
+ /// GeneratedCode - This is the buffer that we emit code to. The first int
/// indicates whether this is an exit predicate (something that should be
- /// tested, and if true, the match fails) [when true] or normal code to emit
- /// [when false].
- std::vector<std::pair<bool, std::string> > &GeneratedCode;
+ /// tested, and if true, the match fails) [when 1], or normal code to emit
+ /// [when 0], or initialization code to emit [when 2].
+ std::vector<std::pair<unsigned, std::string> > &GeneratedCode;
/// GeneratedDecl - This is the set of all SDOperand declarations needed for
/// the set of patterns for each top-level opcode.
- std::set<std::pair<unsigned, std::string> > &GeneratedDecl;
+ std::set<std::string> &GeneratedDecl;
/// TargetOpcodes - The target specific opcodes used by the resulting
/// instructions.
std::vector<std::string> &TargetOpcodes;
void emitCheck(const std::string &S) {
if (!S.empty())
- GeneratedCode.push_back(std::make_pair(true, S));
+ GeneratedCode.push_back(std::make_pair(1, S));
}
void emitCode(const std::string &S) {
if (!S.empty())
- GeneratedCode.push_back(std::make_pair(false, S));
+ GeneratedCode.push_back(std::make_pair(0, S));
+ }
+ void emitInit(const std::string &S) {
+ if (!S.empty())
+ GeneratedCode.push_back(std::make_pair(2, S));
}
- void emitDecl(const std::string &S, unsigned T=0) {
+ void emitDecl(const std::string &S) {
assert(!S.empty() && "Invalid declaration");
- GeneratedDecl.insert(std::make_pair(T, S));
+ GeneratedDecl.insert(S);
}
void emitOpcode(const std::string &Opc) {
TargetOpcodes.push_back(Opc);
VTNo++;
}
public:
- PatternCodeEmitter(DAGISelEmitter &ise, ListInit *preds,
+ PatternCodeEmitter(CodeGenDAGPatterns &cgp, ListInit *preds,
TreePatternNode *pattern, TreePatternNode *instr,
- std::vector<std::pair<bool, std::string> > &gc,
- std::set<std::pair<unsigned, std::string> > &gd,
+ std::vector<std::pair<unsigned, std::string> > &gc,
+ std::set<std::string> &gd,
std::vector<std::string> &to,
std::vector<std::string> &tv)
- : ISE(ise), Predicates(preds), Pattern(pattern), Instruction(instr),
- GeneratedCode(gc), GeneratedDecl(gd), TargetOpcodes(to), TargetVTs(tv),
+ : CGP(cgp), Predicates(preds), Pattern(pattern), Instruction(instr),
+ GeneratedCode(gc), GeneratedDecl(gd),
+ TargetOpcodes(to), TargetVTs(tv),
TmpNo(0), OpcNo(0), VTNo(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, TreePatternNode *P,
- const std::string &RootName, const std::string &ParentName,
- const std::string &ChainSuffix, bool &FoundChain) {
+ const std::string &RootName, const std::string &ChainSuffix,
+ bool &FoundChain) {
bool isRoot = (P == NULL);
// Emit instruction predicates. Each predicate is just a string for now.
if (isRoot) {
assert(0 && "Unknown predicate type!");
}
if (!PredicateCheck.empty())
- PredicateCheck += " || ";
+ PredicateCheck += " && ";
PredicateCheck += "(" + Def->getValueAsString("CondString") + ")";
}
}
// Emit code to load the child nodes and match their contents recursively.
unsigned OpNo = 0;
- bool NodeHasChain = NodeHasProperty (N, SDNodeInfo::SDNPHasChain, ISE);
- bool HasChain = PatternHasProperty(N, SDNodeInfo::SDNPHasChain, ISE);
- bool HasOutFlag = PatternHasProperty(N, SDNodeInfo::SDNPOutFlag, ISE);
+ bool NodeHasChain = NodeHasProperty (N, SDNPHasChain, CGP);
+ bool HasChain = PatternHasProperty(N, SDNPHasChain, CGP);
bool EmittedUseCheck = false;
if (HasChain) {
if (NodeHasChain)
OpNo = 1;
if (!isRoot) {
- const SDNodeInfo &CInfo = ISE.getSDNodeInfo(N->getOperator());
// Multiple uses of actual result?
emitCheck(RootName + ".hasOneUse()");
EmittedUseCheck = true;
if (NodeHasChain) {
- // FIXME: Don't fold if 1) the parent node writes a flag, 2) the node
- // has a chain use.
- // This a workaround for this problem:
- //
- // [ch, r : ld]
- // ^ ^
- // | |
- // [XX]--/ \- [flag : cmp]
- // ^ ^
- // | |
- // \---[br flag]-
- //
- // cmp + br should be considered as a single node as they are flagged
- // together. So, if the ld is folded into the cmp, the XX node in the
- // graph is now both an operand and a use of the ld/cmp/br node.
- if (NodeHasProperty(P, SDNodeInfo::SDNPOutFlag, ISE))
- emitCheck(ParentName + ".Val->isOnlyUse(" + RootName + ".Val)");
-
// If the immediate use can somehow reach this node through another
// path, then can't fold it either or it will create a cycle.
// e.g. In the following diagram, XX can reach ld through YY. If
// / [YY]
// | ^
// [XX]-------|
- const SDNodeInfo &PInfo = ISE.getSDNodeInfo(P->getOperator());
- if (PInfo.getNumOperands() > 1 ||
- PInfo.hasProperty(SDNodeInfo::SDNPHasChain) ||
- PInfo.hasProperty(SDNodeInfo::SDNPInFlag) ||
- PInfo.hasProperty(SDNodeInfo::SDNPOptInFlag))
+ bool NeedCheck = false;
+ if (P != Pattern)
+ NeedCheck = true;
+ else {
+ const SDNodeInfo &PInfo = CGP.getSDNodeInfo(P->getOperator());
+ NeedCheck =
+ P->getOperator() == CGP.get_intrinsic_void_sdnode() ||
+ P->getOperator() == CGP.get_intrinsic_w_chain_sdnode() ||
+ P->getOperator() == CGP.get_intrinsic_wo_chain_sdnode() ||
+ PInfo.getNumOperands() > 1 ||
+ PInfo.hasProperty(SDNPHasChain) ||
+ PInfo.hasProperty(SDNPInFlag) ||
+ PInfo.hasProperty(SDNPOptInFlag);
+ }
+
+ if (NeedCheck) {
+ std::string ParentName(RootName.begin(), RootName.end()-1);
emitCheck("CanBeFoldedBy(" + RootName + ".Val, " + ParentName +
- ".Val)");
+ ".Val, N.Val)");
+ }
}
}
if (NodeHasChain) {
- if (FoundChain)
- emitCheck("Chain.Val == " + RootName + ".Val");
- else
+ if (FoundChain) {
+ emitCheck("(" + ChainName + ".Val == " + RootName + ".Val || "
+ "IsChainCompatible(" + ChainName + ".Val, " +
+ RootName + ".Val))");
+ OrigChains.push_back(std::make_pair(ChainName, RootName));
+ } else
FoundChain = true;
ChainName = "Chain" + ChainSuffix;
- emitDecl(ChainName);
- emitCode(ChainName + " = " + RootName +
+ emitInit("SDOperand " + ChainName + " = " + RootName +
".getOperand(0);");
}
}
// FIXME: If the optional incoming flag does not exist. Then it is ok to
// fold it.
if (!isRoot &&
- (PatternHasProperty(N, SDNodeInfo::SDNPInFlag, ISE) ||
- PatternHasProperty(N, SDNodeInfo::SDNPOptInFlag, ISE) ||
- PatternHasProperty(N, SDNodeInfo::SDNPOutFlag, ISE))) {
- const SDNodeInfo &CInfo = ISE.getSDNodeInfo(N->getOperator());
+ (PatternHasProperty(N, SDNPInFlag, CGP) ||
+ PatternHasProperty(N, SDNPOptInFlag, CGP) ||
+ PatternHasProperty(N, SDNPOutFlag, CGP))) {
if (!EmittedUseCheck) {
// Multiple uses of actual result?
emitCheck(RootName + ".hasOneUse()");
}
}
+ // If there is a node predicate for this, emit the call.
+ if (!N->getPredicateFn().empty())
+ emitCheck(N->getPredicateFn() + "(" + RootName + ".Val)");
+
+
+ // If this is an 'and R, 1234' where the operation is AND/OR and the RHS is
+ // a constant without a predicate fn that has more that one bit set, handle
+ // this as a special case. This is usually for targets that have special
+ // handling of certain large constants (e.g. alpha with it's 8/16/32-bit
+ // handling stuff). Using these instructions is often far more efficient
+ // than materializing the constant. Unfortunately, both the instcombiner
+ // and the dag combiner can often infer that bits are dead, and thus drop
+ // them from the mask in the dag. For example, it might turn 'AND X, 255'
+ // into 'AND X, 254' if it knows the low bit is set. Emit code that checks
+ // to handle this.
+ if (!N->isLeaf() &&
+ (N->getOperator()->getName() == "and" ||
+ N->getOperator()->getName() == "or") &&
+ N->getChild(1)->isLeaf() &&
+ N->getChild(1)->getPredicateFn().empty()) {
+ if (IntInit *II = dynamic_cast<IntInit*>(N->getChild(1)->getLeafValue())) {
+ if (!isPowerOf2_32(II->getValue())) { // Don't bother with single bits.
+ emitInit("SDOperand " + RootName + "0" + " = " +
+ RootName + ".getOperand(" + utostr(0) + ");");
+ emitInit("SDOperand " + RootName + "1" + " = " +
+ RootName + ".getOperand(" + utostr(1) + ");");
+
+ emitCheck("isa<ConstantSDNode>(" + RootName + "1)");
+ const char *MaskPredicate = N->getOperator()->getName() == "or"
+ ? "CheckOrMask(" : "CheckAndMask(";
+ emitCheck(MaskPredicate + RootName + "0, cast<ConstantSDNode>(" +
+ RootName + "1), " + itostr(II->getValue()) + ")");
+
+ EmitChildMatchCode(N->getChild(0), N, RootName + utostr(0), RootName,
+ ChainSuffix + utostr(0), FoundChain);
+ return;
+ }
+ }
+ }
+
for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i, ++OpNo) {
- emitDecl(RootName + utostr(OpNo));
- emitCode(RootName + utostr(OpNo) + " = " +
+ emitInit("SDOperand " + RootName + utostr(OpNo) + " = " +
RootName + ".getOperand(" +utostr(OpNo) + ");");
- TreePatternNode *Child = N->getChild(i);
-
- if (!Child->isLeaf()) {
- // If it's not a leaf, recursively match.
- const SDNodeInfo &CInfo = ISE.getSDNodeInfo(Child->getOperator());
- emitCheck(RootName + utostr(OpNo) + ".getOpcode() == " +
- CInfo.getEnumName());
- EmitMatchCode(Child, N, RootName + utostr(OpNo), RootName,
- ChainSuffix + utostr(OpNo), FoundChain);
- if (NodeHasProperty(Child, SDNodeInfo::SDNPHasChain, 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.
- emitCheck(VarMapEntry + " == " + RootName + utostr(OpNo));
- Duplicates.insert(RootName + utostr(OpNo));
- continue;
- }
+
+ EmitChildMatchCode(N->getChild(i), N, RootName + utostr(OpNo), RootName,
+ ChainSuffix + utostr(OpNo), FoundChain);
+ }
+
+ // Handle cases when root is a complex pattern.
+ const ComplexPattern *CP;
+ if (isRoot && N->isLeaf() && (CP = NodeGetComplexPattern(N, CGP))) {
+ std::string Fn = CP->getSelectFunc();
+ unsigned NumOps = CP->getNumOperands();
+ for (unsigned i = 0; i < NumOps; ++i) {
+ emitDecl("CPTmp" + utostr(i));
+ emitCode("SDOperand CPTmp" + utostr(i) + ";");
+ }
+ if (CP->hasProperty(SDNPHasChain)) {
+ emitDecl("CPInChain");
+ emitDecl("Chain" + ChainSuffix);
+ emitCode("SDOperand CPInChain;");
+ emitCode("SDOperand Chain" + ChainSuffix + ";");
+ }
+
+ std::string Code = Fn + "(" + RootName + ", " + RootName;
+ for (unsigned i = 0; i < NumOps; i++)
+ Code += ", CPTmp" + utostr(i);
+ if (CP->hasProperty(SDNPHasChain)) {
+ ChainName = "Chain" + ChainSuffix;
+ Code += ", CPInChain, Chain" + ChainSuffix;
+ }
+ emitCheck(Code + ")");
+ }
+ }
+
+ void EmitChildMatchCode(TreePatternNode *Child, TreePatternNode *Parent,
+ const std::string &RootName,
+ const std::string &ParentRootName,
+ const std::string &ChainSuffix, bool &FoundChain) {
+ if (!Child->isLeaf()) {
+ // If it's not a leaf, recursively match.
+ const SDNodeInfo &CInfo = CGP.getSDNodeInfo(Child->getOperator());
+ emitCheck(RootName + ".getOpcode() == " +
+ CInfo.getEnumName());
+ EmitMatchCode(Child, Parent, RootName, ChainSuffix, FoundChain);
+ bool HasChain = false;
+ if (NodeHasProperty(Child, SDNPHasChain, CGP)) {
+ HasChain = true;
+ FoldedChains.push_back(std::make_pair(RootName, CInfo.getNumResults()));
+ }
+ if (NodeHasProperty(Child, SDNPOutFlag, CGP)) {
+ assert(FoldedFlag.first == "" && FoldedFlag.second == 0 &&
+ "Pattern folded multiple nodes which produce flags?");
+ FoldedFlag = std::make_pair(RootName,
+ CInfo.getNumResults() + (unsigned)HasChain);
+ }
+ } 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;
+ } 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.
+ emitCheck(VarMapEntry + " == " + RootName);
+ Duplicates.insert(RootName);
+ return;
}
+ }
- // 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")) {
- // Handle register references.
- } 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.
- emitCheck("cast<VTSDNode>(" + RootName + utostr(OpNo) +
- ")->getVT() == MVT::" + LeafRec->getName());
- } else if (LeafRec->isSubClassOf("CondCode")) {
- // Make sure this is the specified cond code.
- emitCheck("cast<CondCodeSDNode>(" + RootName + utostr(OpNo) +
- ")->get() == ISD::" + LeafRec->getName());
+ // Handle leaves of various types.
+ if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
+ Record *LeafRec = DI->getDef();
+ if (LeafRec->isSubClassOf("RegisterClass") ||
+ LeafRec->getName() == "ptr_rc") {
+ // Handle register references. Nothing to do here.
+ } else if (LeafRec->isSubClassOf("Register")) {
+ // Handle register references.
+ } else if (LeafRec->isSubClassOf("ComplexPattern")) {
+ // Handle complex pattern.
+ const ComplexPattern *CP = NodeGetComplexPattern(Child, CGP);
+ std::string Fn = CP->getSelectFunc();
+ unsigned NumOps = CP->getNumOperands();
+ for (unsigned i = 0; i < NumOps; ++i) {
+ emitDecl("CPTmp" + utostr(i));
+ emitCode("SDOperand CPTmp" + utostr(i) + ";");
+ }
+ if (CP->hasProperty(SDNPHasChain)) {
+ const SDNodeInfo &PInfo = CGP.getSDNodeInfo(Parent->getOperator());
+ FoldedChains.push_back(std::make_pair("CPInChain",
+ PInfo.getNumResults()));
+ ChainName = "Chain" + ChainSuffix;
+ emitDecl("CPInChain");
+ emitDecl(ChainName);
+ emitCode("SDOperand CPInChain;");
+ emitCode("SDOperand " + ChainName + ";");
+ }
+
+ std::string Code = Fn + "(";
+ if (CP->hasAttribute(CPAttrParentAsRoot)) {
+ Code += ParentRootName + ", ";
} else {
-#ifndef NDEBUG
- Child->dump();
- std::cerr << " ";
-#endif
- assert(0 && "Unknown leaf type!");
+ Code += "N, ";
+ }
+ if (CP->hasProperty(SDNPHasChain)) {
+ std::string ParentName(RootName.begin(), RootName.end()-1);
+ Code += ParentName + ", ";
}
- } else if (IntInit *II =
- dynamic_cast<IntInit*>(Child->getLeafValue())) {
- emitCheck("isa<ConstantSDNode>(" + RootName + utostr(OpNo) + ")");
- unsigned CTmp = TmpNo++;
- emitCode("int64_t CN"+utostr(CTmp)+" = cast<ConstantSDNode>("+
- RootName + utostr(OpNo) + ")->getSignExtended();");
-
- emitCheck("CN" + utostr(CTmp) + " == " +itostr(II->getValue()));
+ Code += RootName;
+ for (unsigned i = 0; i < NumOps; i++)
+ Code += ", CPTmp" + utostr(i);
+ if (CP->hasProperty(SDNPHasChain))
+ Code += ", CPInChain, Chain" + ChainSuffix;
+ emitCheck(Code + ")");
+ } 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.
+ emitCheck("cast<VTSDNode>(" + RootName +
+ ")->getVT() == MVT::" + LeafRec->getName());
+ } else if (LeafRec->isSubClassOf("CondCode")) {
+ // Make sure this is the specified cond code.
+ emitCheck("cast<CondCodeSDNode>(" + RootName +
+ ")->get() == ISD::" + LeafRec->getName());
} else {
#ifndef NDEBUG
Child->dump();
+ cerr << " ";
#endif
assert(0 && "Unknown leaf type!");
}
+
+ // If there is a node predicate for this, emit the call.
+ if (!Child->getPredicateFn().empty())
+ emitCheck(Child->getPredicateFn() + "(" + RootName +
+ ".Val)");
+ } else if (IntInit *II =
+ dynamic_cast<IntInit*>(Child->getLeafValue())) {
+ emitCheck("isa<ConstantSDNode>(" + RootName + ")");
+ unsigned CTmp = TmpNo++;
+ emitCode("int64_t CN"+utostr(CTmp)+" = cast<ConstantSDNode>("+
+ RootName + ")->getSignExtended();");
+
+ emitCheck("CN" + utostr(CTmp) + " == " +itostr(II->getValue()));
+ } else {
+#ifndef NDEBUG
+ Child->dump();
+#endif
+ assert(0 && "Unknown leaf type!");
}
}
-
- // If there is a node predicate for this, emit the call.
- if (!N->getPredicateFn().empty())
- emitCheck(N->getPredicateFn() + "(" + RootName + ".Val)");
}
/// 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 LikeLeaf = false,
- bool isRoot = false) {
+ std::vector<std::string>
+ EmitResultCode(TreePatternNode *N, std::vector<Record*> DstRegs,
+ bool InFlagDecled, bool ResNodeDecled,
+ bool LikeLeaf = false, bool isRoot = false) {
+ // List of arguments of getTargetNode() or SelectNodeTo().
+ std::vector<std::string> NodeOps;
// This is something selected from the pattern we matched.
if (!N->getName().empty()) {
- std::string &Val = VariableMap[N->getName()];
+ const std::string &VarName = N->getName();
+ std::string Val = VariableMap[VarName];
+ bool ModifiedVal = false;
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));
+ NodeOps.push_back(Val);
+ return NodeOps;
}
const ComplexPattern *CP;
unsigned ResNo = TmpNo++;
- unsigned NumRes = 1;
if (!N->isLeaf() && N->getOperator()->getName() == "imm") {
assert(N->getExtTypes().size() == 1 && "Multiple types not handled!");
std::string CastType;
+ std::string TmpVar = "Tmp" + utostr(ResNo);
switch (N->getTypeNum(0)) {
- default: assert(0 && "Unknown type for constant node!");
+ default:
+ cerr << "Cannot handle " << getEnumName(N->getTypeNum(0))
+ << " type as an immediate constant. Aborting\n";
+ abort();
case MVT::i1: CastType = "bool"; break;
case MVT::i8: CastType = "unsigned char"; break;
case MVT::i16: CastType = "unsigned short"; break;
case MVT::i32: CastType = "unsigned"; break;
case MVT::i64: CastType = "uint64_t"; break;
}
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) +
+ emitCode("SDOperand " + TmpVar +
" = CurDAG->getTargetConstant(((" + CastType +
") cast<ConstantSDNode>(" + Val + ")->getValue()), " +
getEnumName(N->getTypeNum(0)) + ");");
+ // Add Tmp<ResNo> to VariableMap, so that we don't multiply select this
+ // value if used multiple times by this pattern result.
+ Val = TmpVar;
+ ModifiedVal = true;
+ NodeOps.push_back(Val);
} else if (!N->isLeaf() && N->getOperator()->getName() == "texternalsym"){
Record *Op = OperatorMap[N->getName()];
// Transform ExternalSymbol to TargetExternalSymbol
if (Op && Op->getName() == "externalsym") {
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = CurDAG->getTarget"
+ std::string TmpVar = "Tmp"+utostr(ResNo);
+ emitCode("SDOperand " + TmpVar + " = CurDAG->getTarget"
"ExternalSymbol(cast<ExternalSymbolSDNode>(" +
Val + ")->getSymbol(), " +
getEnumName(N->getTypeNum(0)) + ");");
- } else {
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = " + Val + ";");
+ // Add Tmp<ResNo> to VariableMap, so that we don't multiply select
+ // this value if used multiple times by this pattern result.
+ Val = TmpVar;
+ ModifiedVal = true;
}
- } else if (!N->isLeaf() && N->getOperator()->getName() == "tglobaladdr") {
+ NodeOps.push_back(Val);
+ } else if (!N->isLeaf() && (N->getOperator()->getName() == "tglobaladdr"
+ || N->getOperator()->getName() == "tglobaltlsaddr")) {
Record *Op = OperatorMap[N->getName()];
// Transform GlobalAddress to TargetGlobalAddress
- if (Op && Op->getName() == "globaladdr") {
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = CurDAG->getTarget"
+ if (Op && (Op->getName() == "globaladdr" ||
+ Op->getName() == "globaltlsaddr")) {
+ std::string TmpVar = "Tmp" + utostr(ResNo);
+ emitCode("SDOperand " + TmpVar + " = CurDAG->getTarget"
"GlobalAddress(cast<GlobalAddressSDNode>(" + Val +
")->getGlobal(), " + getEnumName(N->getTypeNum(0)) +
");");
- } else {
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = " + Val + ";");
+ // Add Tmp<ResNo> to VariableMap, so that we don't multiply select
+ // this value if used multiple times by this pattern result.
+ Val = TmpVar;
+ ModifiedVal = true;
}
- } else if (!N->isLeaf() && N->getOperator()->getName() == "texternalsym"){
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = " + Val + ";");
- } else if (!N->isLeaf() && N->getOperator()->getName() == "tconstpool") {
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = " + Val + ";");
- } else if (N->isLeaf() && (CP = NodeGetComplexPattern(N, ISE))) {
- std::string Fn = CP->getSelectFunc();
- NumRes = CP->getNumOperands();
- for (unsigned i = 0; i < NumRes; ++i)
- emitDecl("CPTmp" + utostr(i+ResNo));
-
- std::string Code = Fn + "(" + Val;
- for (unsigned i = 0; i < NumRes; i++)
- Code += ", CPTmp" + utostr(i + ResNo);
- emitCheck(Code + ")");
-
- for (unsigned i = 0; i < NumRes; ++i) {
- emitDecl("Tmp" + utostr(i+ResNo));
- emitCode("AddToQueue(Tmp" + utostr(i+ResNo) + ", CPTmp" +
- utostr(i+ResNo) + ");");
+ NodeOps.push_back(Val);
+ } else if (!N->isLeaf()
+ && (N->getOperator()->getName() == "texternalsym"
+ || N->getOperator()->getName() == "tconstpool")) {
+ // Do not rewrite the variable name, since we don't generate a new
+ // temporary.
+ NodeOps.push_back(Val);
+ } else if (N->isLeaf() && (CP = NodeGetComplexPattern(N, CGP))) {
+ for (unsigned i = 0; i < CP->getNumOperands(); ++i) {
+ emitCode("AddToISelQueue(CPTmp" + utostr(i) + ");");
+ NodeOps.push_back("CPTmp" + utostr(i));
}
-
- TmpNo = ResNo + NumRes;
} else {
- emitDecl("Tmp" + utostr(ResNo));
- // This node, probably wrapped in a SDNodeXForms, behaves like a leaf
+ // This node, probably wrapped in a SDNodeXForm, behaves like a leaf
// node even if it isn't one. Don't select it.
- if (LikeLeaf)
- emitCode("Tmp" + utostr(ResNo) + " = " + Val + ";");
- else {
- emitCode("AddToQueue(Tmp" + utostr(ResNo) + ", " + Val + ");");
+ if (!LikeLeaf) {
+ emitCode("AddToISelQueue(" + Val + ");");
if (isRoot && N->isLeaf()) {
- emitCode("ReplaceUses(N, Tmp" + utostr(ResNo) + ");");
- emitCode("Result = Tmp" + utostr(ResNo) + ";");
- emitCode("return;");
+ emitCode("ReplaceUses(N, " + Val + ");");
+ emitCode("return NULL;");
}
}
+ NodeOps.push_back(Val);
+ }
+
+ if (ModifiedVal) {
+ VariableMap[VarName] = Val;
}
- // 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);
+ return NodeOps;
}
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")) {
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = CurDAG->getRegister(" +
- ISE.getQualifiedName(DI->getDef()) + ", " +
+ emitCode("SDOperand Tmp" + utostr(ResNo) + " = CurDAG->getRegister(" +
+ getQualifiedName(DI->getDef()) + ", " +
+ getEnumName(N->getTypeNum(0)) + ");");
+ NodeOps.push_back("Tmp" + utostr(ResNo));
+ return NodeOps;
+ } else if (DI->getDef()->getName() == "zero_reg") {
+ emitCode("SDOperand Tmp" + utostr(ResNo) +
+ " = CurDAG->getRegister(0, " +
getEnumName(N->getTypeNum(0)) + ");");
- return std::make_pair(1, ResNo);
+ NodeOps.push_back("Tmp" + utostr(ResNo));
+ return NodeOps;
}
} else if (IntInit *II = dynamic_cast<IntInit*>(N->getLeafValue())) {
unsigned ResNo = TmpNo++;
assert(N->getExtTypes().size() == 1 && "Multiple types not handled!");
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) +
+ emitCode("SDOperand Tmp" + utostr(ResNo) +
" = CurDAG->getTargetConstant(" + itostr(II->getValue()) +
", " + getEnumName(N->getTypeNum(0)) + ");");
- return std::make_pair(1, ResNo);
+ NodeOps.push_back("Tmp" + utostr(ResNo));
+ return NodeOps;
}
#ifndef NDEBUG
N->dump();
#endif
assert(0 && "Unknown leaf type!");
- return std::make_pair(1, ~0U);
+ return NodeOps;
}
Record *Op = N->getOperator();
if (Op->isSubClassOf("Instruction")) {
- const CodeGenTarget &CGT = ISE.getTargetInfo();
+ const CodeGenTarget &CGT = CGP.getTargetInfo();
CodeGenInstruction &II = CGT.getInstruction(Op->getName());
- const DAGInstruction &Inst = ISE.getInstruction(Op);
- TreePattern *InstPat = Inst.getPattern();
+ const DAGInstruction &Inst = CGP.getInstruction(Op);
+ const TreePattern *InstPat = Inst.getPattern();
+ // FIXME: Assume actual pattern comes before "implicit".
TreePatternNode *InstPatNode =
- isRoot ? (InstPat ? InstPat->getOnlyTree() : Pattern)
- : (InstPat ? InstPat->getOnlyTree() : NULL);
+ isRoot ? (InstPat ? InstPat->getTree(0) : Pattern)
+ : (InstPat ? InstPat->getTree(0) : NULL);
if (InstPatNode && InstPatNode->getOperator()->getName() == "set") {
- InstPatNode = InstPatNode->getChild(1);
+ InstPatNode = InstPatNode->getChild(InstPatNode->getNumChildren()-1);
}
- bool HasVarOps = isRoot && II.hasVariableNumberOfOperands;
+ bool HasVarOps = isRoot && II.isVariadic;
+ // FIXME: fix how we deal with physical register operands.
bool HasImpInputs = isRoot && Inst.getNumImpOperands() > 0;
- bool HasImpResults = isRoot && Inst.getNumImpResults() > 0;
+ bool HasImpResults = isRoot && DstRegs.size() > 0;
bool NodeHasOptInFlag = isRoot &&
- PatternHasProperty(Pattern, SDNodeInfo::SDNPOptInFlag, ISE);
+ PatternHasProperty(Pattern, SDNPOptInFlag, CGP);
bool NodeHasInFlag = isRoot &&
- PatternHasProperty(Pattern, SDNodeInfo::SDNPInFlag, ISE);
- bool NodeHasOutFlag = HasImpResults || (isRoot &&
- PatternHasProperty(Pattern, SDNodeInfo::SDNPOutFlag, ISE));
+ PatternHasProperty(Pattern, SDNPInFlag, CGP);
+ bool NodeHasOutFlag = isRoot &&
+ PatternHasProperty(Pattern, SDNPOutFlag, CGP);
bool NodeHasChain = InstPatNode &&
- PatternHasProperty(InstPatNode, SDNodeInfo::SDNPHasChain, ISE);
+ PatternHasProperty(InstPatNode, SDNPHasChain, CGP);
bool InputHasChain = isRoot &&
- NodeHasProperty(Pattern, SDNodeInfo::SDNPHasChain, ISE);
+ NodeHasProperty(Pattern, SDNPHasChain, CGP);
+ unsigned NumResults = Inst.getNumResults();
+ unsigned NumDstRegs = HasImpResults ? DstRegs.size() : 0;
- if (NodeHasInFlag || NodeHasOutFlag || NodeHasOptInFlag || HasImpInputs)
- emitDecl("InFlag");
if (NodeHasOptInFlag) {
- emitDecl("HasInFlag", 2);
- emitCode("HasInFlag = "
+ emitCode("bool HasInFlag = "
"(N.getOperand(N.getNumOperands()-1).getValueType() == MVT::Flag);");
}
if (HasVarOps)
- emitCode("std::vector<SDOperand> Ops;");
+ emitCode("SmallVector<SDOperand, 8> Ops" + utostr(OpcNo) + ";");
// How many results is this pattern expected to produce?
- unsigned PatResults = 0;
+ unsigned NumPatResults = 0;
for (unsigned i = 0, e = Pattern->getExtTypes().size(); i != e; i++) {
MVT::ValueType VT = Pattern->getTypeNum(i);
if (VT != MVT::isVoid && VT != MVT::Flag)
- PatResults++;
+ NumPatResults++;
}
- // 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));
+ if (OrigChains.size() > 0) {
+ // The original input chain is being ignored. If it is not just
+ // pointing to the op that's being folded, we should create a
+ // TokenFactor with it and the chain of the folded op as the new chain.
+ // We could potentially be doing multiple levels of folding, in that
+ // case, the TokenFactor can have more operands.
+ emitCode("SmallVector<SDOperand, 8> InChains;");
+ for (unsigned i = 0, e = OrigChains.size(); i < e; ++i) {
+ emitCode("if (" + OrigChains[i].first + ".Val != " +
+ OrigChains[i].second + ".Val) {");
+ emitCode(" AddToISelQueue(" + OrigChains[i].first + ");");
+ emitCode(" InChains.push_back(" + OrigChains[i].first + ");");
+ emitCode("}");
}
+ emitCode("AddToISelQueue(" + ChainName + ");");
+ emitCode("InChains.push_back(" + ChainName + ");");
+ emitCode(ChainName + " = CurDAG->getNode(ISD::TokenFactor, MVT::Other, "
+ "&InChains[0], InChains.size());");
}
- // 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;
- }
-
- // 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);
+ // Loop over all of the operands of the instruction pattern, emitting code
+ // to fill them all in. The node 'N' usually has number children equal to
+ // the number of input operands of the instruction. However, in cases
+ // where there are predicate operands for an instruction, we need to fill
+ // in the 'execute always' values. Match up the node operands to the
+ // instruction operands to do this.
+ std::vector<std::string> AllOps;
+ unsigned NumEAInputs = 0; // # of synthesized 'execute always' inputs.
+ for (unsigned ChildNo = 0, InstOpNo = NumResults;
+ InstOpNo != II.OperandList.size(); ++InstOpNo) {
+ std::vector<std::string> Ops;
+
+ // If this is a normal operand or a predicate operand without
+ // 'execute always', emit it.
+ Record *OperandNode = II.OperandList[InstOpNo].Rec;
+ if ((!OperandNode->isSubClassOf("PredicateOperand") &&
+ !OperandNode->isSubClassOf("OptionalDefOperand")) ||
+ CGP.getDefaultOperand(OperandNode).DefaultOps.empty()) {
+ Ops = EmitResultCode(N->getChild(ChildNo), DstRegs,
+ InFlagDecled, ResNodeDecled);
+ AllOps.insert(AllOps.end(), Ops.begin(), Ops.end());
+ ++ChildNo;
+ } else {
+ // Otherwise, this is a predicate or optional def operand, emit the
+ // 'default ops' operands.
+ const DAGDefaultOperand &DefaultOp =
+ CGP.getDefaultOperand(II.OperandList[InstOpNo].Rec);
+ for (unsigned i = 0, e = DefaultOp.DefaultOps.size(); i != e; ++i) {
+ Ops = EmitResultCode(DefaultOp.DefaultOps[i], DstRegs,
+ InFlagDecled, ResNodeDecled);
+ AllOps.insert(AllOps.end(), Ops.begin(), Ops.end());
+ NumEAInputs += Ops.size();
+ }
+ }
}
// Emit all the chain and CopyToReg stuff.
bool ChainEmitted = NodeHasChain;
if (NodeHasChain)
- emitCode("AddToQueue(" + ChainName + ", " + ChainName + ");");
+ emitCode("AddToISelQueue(" + ChainName + ");");
if (NodeHasInFlag || HasImpInputs)
- EmitInFlagSelectCode(Pattern, "N", ChainEmitted, true);
- if (NodeHasOptInFlag) {
- emitCode("if (HasInFlag)");
- emitCode(" AddToQueue(InFlag, N.getOperand(N.getNumOperands()-1));");
+ EmitInFlagSelectCode(Pattern, "N", ChainEmitted,
+ InFlagDecled, ResNodeDecled, true);
+ if (NodeHasOptInFlag || NodeHasInFlag || HasImpInputs) {
+ if (!InFlagDecled) {
+ emitCode("SDOperand InFlag(0, 0);");
+ InFlagDecled = true;
+ }
+ if (NodeHasOptInFlag) {
+ emitCode("if (HasInFlag) {");
+ emitCode(" InFlag = N.getOperand(N.getNumOperands()-1);");
+ emitCode(" AddToISelQueue(InFlag);");
+ emitCode("}");
+ }
}
- unsigned NumResults = Inst.getNumResults();
unsigned ResNo = TmpNo++;
if (!isRoot || InputHasChain || NodeHasChain || NodeHasOutFlag ||
- NodeHasOptInFlag) {
+ NodeHasOptInFlag || HasImpResults) {
std::string Code;
std::string Code2;
std::string NodeName;
if (!isRoot) {
NodeName = "Tmp" + utostr(ResNo);
- emitDecl(NodeName);
- Code2 = NodeName + " = SDOperand(";
+ Code2 = "SDOperand " + NodeName + "(";
} else {
NodeName = "ResNode";
- emitDecl(NodeName, true);
- Code2 = NodeName + " = ";
+ if (!ResNodeDecled) {
+ Code2 = "SDNode *" + NodeName + " = ";
+ ResNodeDecled = true;
+ } else
+ Code2 = NodeName + " = ";
}
- Code = "CurDAG->getTargetNode(Opc" + utostr(OpcNo);
+
+ Code += "CurDAG->getTargetNode(Opc" + utostr(OpcNo);
+ unsigned OpsNo = OpcNo;
emitOpcode(II.Namespace + "::" + II.TheDef->getName());
// Output order: results, chain, flags
Code += ", VT" + utostr(VTNo);
emitVT(getEnumName(N->getTypeNum(0)));
}
+ // Add types for implicit results in physical registers, scheduler will
+ // care of adding copyfromreg nodes.
+ for (unsigned i = 0; i < NumDstRegs; i++) {
+ Record *RR = DstRegs[i];
+ if (RR->isSubClassOf("Register")) {
+ MVT::ValueType RVT = getRegisterValueType(RR, CGT);
+ Code += ", " + getEnumName(RVT);
+ }
+ }
if (NodeHasChain)
Code += ", MVT::Other";
if (NodeHasOutFlag)
Code += ", MVT::Flag";
+ // Figure out how many fixed inputs the node has. This is important to
+ // know which inputs are the variable ones if present.
+ unsigned NumInputs = AllOps.size();
+ NumInputs += NodeHasChain;
+
// Inputs.
- for (unsigned i = 0, e = Ops.size(); i != e; ++i) {
- if (HasVarOps)
- emitCode("Ops.push_back(Tmp" + utostr(Ops[i]) + ");");
- else
- Code += ", Tmp" + utostr(Ops[i]);
+ if (HasVarOps) {
+ for (unsigned i = 0, e = AllOps.size(); i != e; ++i)
+ emitCode("Ops" + utostr(OpsNo) + ".push_back(" + AllOps[i] + ");");
+ AllOps.clear();
}
if (HasVarOps) {
+ // Figure out whether any operands at the end of the op list are not
+ // part of the variable section.
+ std::string EndAdjust;
if (NodeHasInFlag || HasImpInputs)
- emitCode("for (unsigned i = 2, e = N.getNumOperands()-1; "
- "i != e; ++i) {");
- else if (NodeHasOptInFlag)
- emitCode("for (unsigned i = 2, e = N.getNumOperands()-"
- "(HasInFlag?1:0); i != e; ++i) {");
- else
- emitCode("for (unsigned i = 2, e = N.getNumOperands(); "
- "i != e; ++i) {");
- emitCode(" SDOperand VarOp(0, 0);");
- emitCode(" AddToQueue(VarOp, N.getOperand(i));");
- emitCode(" Ops.push_back(VarOp);");
+ EndAdjust = "-1"; // Always has one flag.
+ else if (NodeHasOptInFlag)
+ EndAdjust = "-(HasInFlag?1:0)"; // May have a flag.
+
+ emitCode("for (unsigned i = " + utostr(NumInputs - NumEAInputs) +
+ ", e = N.getNumOperands()" + EndAdjust + "; i != e; ++i) {");
+
+ emitCode(" AddToISelQueue(N.getOperand(i));");
+ emitCode(" Ops" + utostr(OpsNo) + ".push_back(N.getOperand(i));");
emitCode("}");
}
if (NodeHasChain) {
if (HasVarOps)
- emitCode("Ops.push_back(" + ChainName + ");");
- else
- Code += ", " + ChainName;
- }
- if (NodeHasInFlag || HasImpInputs) {
- if (HasVarOps)
- emitCode("Ops.push_back(InFlag);");
+ emitCode("Ops" + utostr(OpsNo) + ".push_back(" + ChainName + ");");
else
- Code += ", InFlag";
- } else if (NodeHasOptInFlag && HasVarOps) {
- emitCode("if (HasInFlag)");
- emitCode(" Ops.push_back(InFlag);");
+ AllOps.push_back(ChainName);
}
- if (HasVarOps)
- Code += ", &Ops[0], Ops.size()";
- else if (NodeHasOptInFlag)
- Code = "HasInFlag ? " + Code + ", InFlag) : " + Code;
-
+ if (HasVarOps) {
+ if (NodeHasInFlag || HasImpInputs)
+ emitCode("Ops" + utostr(OpsNo) + ".push_back(InFlag);");
+ else if (NodeHasOptInFlag) {
+ emitCode("if (HasInFlag)");
+ emitCode(" Ops" + utostr(OpsNo) + ".push_back(InFlag);");
+ }
+ Code += ", &Ops" + utostr(OpsNo) + "[0], Ops" + utostr(OpsNo) +
+ ".size()";
+ } else if (NodeHasInFlag || NodeHasOptInFlag || HasImpInputs)
+ AllOps.push_back("InFlag");
+
+ unsigned NumOps = AllOps.size();
+ if (NumOps) {
+ if (!NodeHasOptInFlag && NumOps < 4) {
+ for (unsigned i = 0; i != NumOps; ++i)
+ Code += ", " + AllOps[i];
+ } else {
+ std::string OpsCode = "SDOperand Ops" + utostr(OpsNo) + "[] = { ";
+ for (unsigned i = 0; i != NumOps; ++i) {
+ OpsCode += AllOps[i];
+ if (i != NumOps-1)
+ OpsCode += ", ";
+ }
+ emitCode(OpsCode + " };");
+ Code += ", Ops" + utostr(OpsNo) + ", ";
+ if (NodeHasOptInFlag) {
+ Code += "HasInFlag ? ";
+ Code += utostr(NumOps) + " : " + utostr(NumOps-1);
+ } else
+ Code += utostr(NumOps);
+ }
+ }
+
if (!isRoot)
Code += "), 0";
emitCode(Code2 + Code + ");");
// Remember which op produces the chain.
if (!isRoot)
emitCode(ChainName + " = SDOperand(" + NodeName +
- ".Val, " + utostr(PatResults) + ");");
+ ".Val, " + utostr(NumResults+NumDstRegs) + ");");
else
emitCode(ChainName + " = SDOperand(" + NodeName +
- ", " + utostr(PatResults) + ");");
-
- if (!isRoot)
- return std::make_pair(1, ResNo);
-
- for (unsigned i = 0; i < NumResults; i++)
- emitCode("ReplaceUses(SDOperand(N.Val, " +
- utostr(i) + "), SDOperand(ResNode, " + utostr(i) + "));");
+ ", " + utostr(NumResults+NumDstRegs) + ");");
- if (NodeHasOutFlag)
- emitCode("InFlag = SDOperand(ResNode, " +
- utostr(NumResults + (unsigned)NodeHasChain) + ");");
-
- if (HasImpResults && EmitCopyFromRegs(N, ChainEmitted)) {
- emitCode("ReplaceUses(SDOperand(N.Val, 0), SDOperand(ResNode, 0));");
- NumResults = 1;
+ if (!isRoot) {
+ NodeOps.push_back("Tmp" + utostr(ResNo));
+ return NodeOps;
}
- if (InputHasChain)
- emitCode("ReplaceUses(SDOperand(N.Val, " +
- utostr(PatResults) + "), SDOperand(" + ChainName + ".Val, " +
- ChainName + ".ResNo" + "));");
+ bool NeedReplace = false;
+ if (NodeHasOutFlag) {
+ if (!InFlagDecled) {
+ emitCode("SDOperand InFlag(ResNode, " +
+ utostr(NumResults+NumDstRegs+(unsigned)NodeHasChain) + ");");
+ InFlagDecled = true;
+ } else
+ emitCode("InFlag = SDOperand(ResNode, " +
+ utostr(NumResults+NumDstRegs+(unsigned)NodeHasChain) + ");");
+ }
if (FoldedChains.size() > 0) {
std::string Code;
emitCode("ReplaceUses(SDOperand(" +
FoldedChains[j].first + ".Val, " +
utostr(FoldedChains[j].second) + "), SDOperand(ResNode, " +
- utostr(NumResults) + "));");
+ utostr(NumResults+NumDstRegs) + "));");
+ NeedReplace = true;
}
- if (NodeHasOutFlag)
- emitCode("ReplaceUses(SDOperand(N.Val, " +
- utostr(PatResults + (unsigned)InputHasChain) +"), InFlag);");
-
- // User does not expect the instruction would produce a chain!
- bool AddedChain = NodeHasChain && !InputHasChain;
- if (AddedChain && NodeHasOutFlag) {
- if (PatResults == 0) {
- emitCode("Result = SDOperand(ResNode, N.ResNo+1);");
+ if (NodeHasOutFlag) {
+ if (FoldedFlag.first != "") {
+ emitCode("ReplaceUses(SDOperand(" + FoldedFlag.first + ".Val, " +
+ utostr(FoldedFlag.second) + "), InFlag);");
} else {
- emitCode("if (N.ResNo < " + utostr(PatResults) + ")");
- emitCode(" Result = SDOperand(ResNode, N.ResNo);");
- emitCode("else");
- emitCode(" Result = SDOperand(ResNode, N.ResNo+1);");
+ assert(NodeHasProperty(Pattern, SDNPOutFlag, CGP));
+ emitCode("ReplaceUses(SDOperand(N.Val, " +
+ utostr(NumPatResults + (unsigned)InputHasChain)
+ +"), InFlag);");
}
+ NeedReplace = true;
+ }
+
+ if (NeedReplace && InputHasChain)
+ emitCode("ReplaceUses(SDOperand(N.Val, " +
+ utostr(NumPatResults) + "), SDOperand(" + ChainName
+ + ".Val, " + ChainName + ".ResNo" + "));");
+
+ // User does not expect the instruction would produce a chain!
+ if ((!InputHasChain && NodeHasChain) && NodeHasOutFlag) {
+ ;
} else if (InputHasChain && !NodeHasChain) {
// One of the inner node produces a chain.
- emitCode("if (N.ResNo < " + utostr(PatResults) + ")");
- emitCode(" Result = SDOperand(ResNode, N.ResNo);");
- if (NodeHasOutFlag) {
- emitCode("else if (N.ResNo > " + utostr(PatResults) + ")");
- emitCode(" Result = SDOperand(ResNode, N.ResNo-1);");
- }
- emitCode("else");
- emitCode(" Result = SDOperand(" + ChainName + ".Val, " +
- ChainName + ".ResNo);");
- } else {
- emitCode("Result = SDOperand(ResNode, N.ResNo);");
+ if (NodeHasOutFlag)
+ emitCode("ReplaceUses(SDOperand(N.Val, " + utostr(NumPatResults+1) +
+ "), SDOperand(ResNode, N.ResNo-1));");
+ emitCode("ReplaceUses(SDOperand(N.Val, " + utostr(NumPatResults) +
+ "), " + ChainName + ");");
}
+
+ emitCode("return ResNode;");
} 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.
- emitCode("if (N.Val->hasOneUse()) {");
- std::string Code = " Result = CurDAG->SelectNodeTo(N.Val, Opc" +
+ std::string Code = "return CurDAG->SelectNodeTo(N.Val, Opc" +
utostr(OpcNo);
if (N->getTypeNum(0) != MVT::isVoid)
Code += ", VT" + utostr(VTNo);
if (NodeHasOutFlag)
Code += ", MVT::Flag";
- for (unsigned i = 0, e = Ops.size(); i != e; ++i)
- Code += ", Tmp" + utostr(Ops[i]);
- if (NodeHasInFlag || HasImpInputs)
- Code += ", InFlag";
+
+ if (NodeHasInFlag || NodeHasOptInFlag || HasImpInputs)
+ AllOps.push_back("InFlag");
+
+ unsigned NumOps = AllOps.size();
+ if (NumOps) {
+ if (!NodeHasOptInFlag && NumOps < 4) {
+ for (unsigned i = 0; i != NumOps; ++i)
+ Code += ", " + AllOps[i];
+ } else {
+ std::string OpsCode = "SDOperand Ops" + utostr(OpcNo) + "[] = { ";
+ for (unsigned i = 0; i != NumOps; ++i) {
+ OpsCode += AllOps[i];
+ if (i != NumOps-1)
+ OpsCode += ", ";
+ }
+ emitCode(OpsCode + " };");
+ Code += ", Ops" + utostr(OpcNo) + ", ";
+ Code += utostr(NumOps);
+ }
+ }
emitCode(Code + ");");
- emitCode("} else {");
- emitDecl("ResNode", 1);
- Code = " ResNode = CurDAG->getTargetNode(Opc" + utostr(OpcNo);
emitOpcode(II.Namespace + "::" + II.TheDef->getName());
- if (N->getTypeNum(0) != MVT::isVoid) {
- Code += ", VT" + utostr(VTNo);
+ if (N->getTypeNum(0) != MVT::isVoid)
emitVT(getEnumName(N->getTypeNum(0)));
- }
- if (NodeHasOutFlag)
- Code += ", MVT::Flag";
- for (unsigned i = 0, e = Ops.size(); i != e; ++i)
- Code += ", Tmp" + utostr(Ops[i]);
- if (NodeHasInFlag || HasImpInputs)
- Code += ", InFlag";
- emitCode(Code + ");");
- emitCode(" ReplaceUses(N, SDOperand(ResNode, 0));");
- emitCode(" Result = SDOperand(ResNode, 0);");
- emitCode("}");
}
- if (isRoot)
- emitCode("return;");
- return std::make_pair(1, ResNo);
+ return NodeOps;
} else if (Op->isSubClassOf("SDNodeXForm")) {
assert(N->getNumChildren() == 1 && "node xform should have one child!");
// PatLeaf node - the operand may or may not be a leaf node. But it should
// behave like one.
- unsigned OpVal = EmitResultCode(N->getChild(0), true).second;
+ std::vector<std::string> Ops =
+ EmitResultCode(N->getChild(0), DstRegs, InFlagDecled,
+ ResNodeDecled, true);
unsigned ResNo = TmpNo++;
- emitDecl("Tmp" + utostr(ResNo));
- emitCode("Tmp" + utostr(ResNo) + " = Transform_" + Op->getName()
- + "(Tmp" + utostr(OpVal) + ".Val);");
- if (isRoot) {
- emitCode("ReplaceUses(N, Tmp" + utostr(ResNo) + ");");
- emitCode("Result = Tmp" + utostr(ResNo) + ";");
- emitCode("return;");
- }
- return std::make_pair(1, ResNo);
+ emitCode("SDOperand Tmp" + utostr(ResNo) + " = Transform_" + Op->getName()
+ + "(" + Ops.back() + ".Val);");
+ NodeOps.push_back("Tmp" + utostr(ResNo));
+ if (isRoot)
+ emitCode("return Tmp" + utostr(ResNo) + ".Val;");
+ return NodeOps;
} else {
N->dump();
- std::cerr << "\n";
+ cerr << "\n";
throw std::string("Unknown node in result pattern!");
}
}
}
unsigned OpNo =
- (unsigned) NodeHasProperty(Pat, SDNodeInfo::SDNPHasChain, ISE);
+ (unsigned) NodeHasProperty(Pat, SDNPHasChain, CGP);
for (unsigned i = 0, e = Pat->getNumChildren(); i != e; ++i, ++OpNo)
if (InsertOneTypeCheck(Pat->getChild(i), Other->getChild(i),
Prefix + utostr(OpNo)))
/// EmitInFlagSelectCode - Emit the flag operands for the DAG that is
/// being built.
void EmitInFlagSelectCode(TreePatternNode *N, const std::string &RootName,
- bool &ChainEmitted, bool isRoot = false) {
- const CodeGenTarget &T = ISE.getTargetInfo();
+ bool &ChainEmitted, bool &InFlagDecled,
+ bool &ResNodeDecled, bool isRoot = false) {
+ const CodeGenTarget &T = CGP.getTargetInfo();
unsigned OpNo =
- (unsigned) NodeHasProperty(N, SDNodeInfo::SDNPHasChain, ISE);
- bool HasInFlag = NodeHasProperty(N, SDNodeInfo::SDNPInFlag, ISE);
+ (unsigned) NodeHasProperty(N, SDNPHasChain, CGP);
+ bool HasInFlag = NodeHasProperty(N, SDNPInFlag, CGP);
for (unsigned i = 0, e = N->getNumChildren(); i != e; ++i, ++OpNo) {
TreePatternNode *Child = N->getChild(i);
if (!Child->isLeaf()) {
- EmitInFlagSelectCode(Child, RootName + utostr(OpNo), ChainEmitted);
+ EmitInFlagSelectCode(Child, RootName + utostr(OpNo), ChainEmitted,
+ InFlagDecled, ResNodeDecled);
} else {
if (DefInit *DI = dynamic_cast<DefInit*>(Child->getLeafValue())) {
if (!Child->getName().empty()) {
if (RR->isSubClassOf("Register")) {
MVT::ValueType RVT = getRegisterValueType(RR, T);
if (RVT == MVT::Flag) {
- emitCode("AddToQueue(InFlag, " + RootName + utostr(OpNo) + ");");
+ if (!InFlagDecled) {
+ emitCode("SDOperand InFlag = " + RootName + utostr(OpNo) + ";");
+ InFlagDecled = true;
+ } else
+ emitCode("InFlag = " + RootName + utostr(OpNo) + ";");
+ emitCode("AddToISelQueue(InFlag);");
} else {
if (!ChainEmitted) {
- emitDecl("Chain");
- emitCode("Chain = CurDAG->getEntryNode();");
+ emitCode("SDOperand Chain = CurDAG->getEntryNode();");
ChainName = "Chain";
ChainEmitted = true;
}
- emitCode("AddToQueue(" + RootName + utostr(OpNo) + ", " +
- RootName + utostr(OpNo) + ");");
- emitCode("ResNode = CurDAG->getCopyToReg(" + ChainName +
- ", CurDAG->getRegister(" + ISE.getQualifiedName(RR) +
- ", " + getEnumName(RVT) + "), " +
- RootName + utostr(OpNo) + ", InFlag).Val;");
+ emitCode("AddToISelQueue(" + RootName + utostr(OpNo) + ");");
+ if (!InFlagDecled) {
+ emitCode("SDOperand InFlag(0, 0);");
+ InFlagDecled = true;
+ }
+ std::string Decl = (!ResNodeDecled) ? "SDNode *" : "";
+ emitCode(Decl + "ResNode = CurDAG->getCopyToReg(" + ChainName +
+ ", " + getQualifiedName(RR) +
+ ", " + RootName + utostr(OpNo) + ", InFlag).Val;");
+ ResNodeDecled = true;
emitCode(ChainName + " = SDOperand(ResNode, 0);");
emitCode("InFlag = SDOperand(ResNode, 1);");
}
}
}
- if (HasInFlag)
- emitCode("AddToQueue(InFlag, " + RootName +
- ".getOperand(" + utostr(OpNo) + "));");
- }
-
- /// EmitCopyFromRegs - Emit code to copy result to physical registers
- /// as specified by the instruction. It returns true if any copy is
- /// emitted.
- bool EmitCopyFromRegs(TreePatternNode *N, bool &ChainEmitted) {
- bool RetVal = false;
- Record *Op = N->getOperator();
- if (Op->isSubClassOf("Instruction")) {
- const DAGInstruction &Inst = ISE.getInstruction(Op);
- const CodeGenTarget &CGT = ISE.getTargetInfo();
- 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 (!ChainEmitted) {
- emitDecl("Chain");
- emitCode("Chain = CurDAG->getEntryNode();");
- ChainEmitted = true;
- ChainName = "Chain";
- }
- emitCode("ResNode = CurDAG->getCopyFromReg(" + ChainName +
- ", " + ISE.getQualifiedName(RR) + ", " + getEnumName(RVT) +
- ", InFlag).Val;");
- emitCode(ChainName + " = SDOperand(ResNode, 1);");
- emitCode("InFlag = SDOperand(ResNode, 2);");
- RetVal = true;
- }
- }
- }
+ if (HasInFlag) {
+ if (!InFlagDecled) {
+ emitCode("SDOperand InFlag = " + RootName +
+ ".getOperand(" + utostr(OpNo) + ");");
+ InFlagDecled = true;
+ } else
+ emitCode("InFlag = " + RootName +
+ ".getOperand(" + utostr(OpNo) + ");");
+ emitCode("AddToISelQueue(InFlag);");
}
- 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
/// succeeds. Returns true if the pattern is not guaranteed to match.
-void DAGISelEmitter::GenerateCodeForPattern(PatternToMatch &Pattern,
- std::vector<std::pair<bool, std::string> > &GeneratedCode,
- std::set<std::pair<unsigned, std::string> > &GeneratedDecl,
+void DAGISelEmitter::GenerateCodeForPattern(const PatternToMatch &Pattern,
+ std::vector<std::pair<unsigned, std::string> > &GeneratedCode,
+ std::set<std::string> &GeneratedDecl,
std::vector<std::string> &TargetOpcodes,
- std::vector<std::string> &TargetVTs) {
- PatternCodeEmitter Emitter(*this, Pattern.getPredicates(),
+ std::vector<std::string> &TargetVTs) {
+ PatternCodeEmitter Emitter(CGP, Pattern.getPredicates(),
Pattern.getSrcPattern(), Pattern.getDstPattern(),
GeneratedCode, GeneratedDecl,
TargetOpcodes, TargetVTs);
// Emit the matcher, capturing named arguments in VariableMap.
bool FoundChain = false;
- Emitter.EmitMatchCode(Pattern.getSrcPattern(), NULL, "N", "", "", FoundChain);
+ Emitter.EmitMatchCode(Pattern.getSrcPattern(), NULL, "N", "", FoundChain);
// TP - Get *SOME* tree pattern, we don't care which.
- TreePattern &TP = *PatternFragments.begin()->second;
+ TreePattern &TP = *CGP.pf_begin()->second;
// At this point, we know that we structurally match the pattern, but the
// types of the nodes may not match. Figure out the fewest number of type
// otherwise we are done.
} while (Emitter.InsertOneTypeCheck(Pat, Pattern.getSrcPattern(), "N", true));
- Emitter.EmitResultCode(Pattern.getDstPattern(), false, true /*the root*/);
+ Emitter.EmitResultCode(Pattern.getDstPattern(), Pattern.getDstRegs(),
+ false, false, false, true);
delete Pat;
}
/// EraseCodeLine - Erase one code line from all of the patterns. If removing
/// a line causes any of them to be empty, remove them and return true when
/// done.
-static bool EraseCodeLine(std::vector<std::pair<PatternToMatch*,
- std::vector<std::pair<bool, std::string> > > >
+static bool EraseCodeLine(std::vector<std::pair<const PatternToMatch*,
+ std::vector<std::pair<unsigned, std::string> > > >
&Patterns) {
bool ErasedPatterns = false;
for (unsigned i = 0, e = Patterns.size(); i != e; ++i) {
/// EmitPatterns - Emit code for at least one pattern, but try to group common
/// code together between the patterns.
-void DAGISelEmitter::EmitPatterns(std::vector<std::pair<PatternToMatch*,
- std::vector<std::pair<bool, std::string> > > >
+void DAGISelEmitter::EmitPatterns(std::vector<std::pair<const PatternToMatch*,
+ std::vector<std::pair<unsigned, std::string> > > >
&Patterns, unsigned Indent,
std::ostream &OS) {
- typedef std::pair<bool, std::string> CodeLine;
+ typedef std::pair<unsigned, std::string> CodeLine;
typedef std::vector<CodeLine> CodeList;
- typedef std::vector<std::pair<PatternToMatch*, CodeList> > PatternList;
+ typedef std::vector<std::pair<const PatternToMatch*, CodeList> > PatternList;
if (Patterns.empty()) return;
// FIXME: Emit braces?
if (Shared.size() == 1) {
- PatternToMatch &Pattern = *Shared.back().first;
+ const PatternToMatch &Pattern = *Shared.back().first;
OS << "\n" << std::string(Indent, ' ') << "// Pattern: ";
Pattern.getSrcPattern()->print(OS);
OS << "\n" << std::string(Indent, ' ') << "// Emits: ";
OS << "\n";
unsigned AddedComplexity = Pattern.getAddedComplexity();
OS << std::string(Indent, ' ') << "// Pattern complexity = "
- << getPatternSize(Pattern.getSrcPattern(), *this) + AddedComplexity
+ << getPatternSize(Pattern.getSrcPattern(), CGP) + AddedComplexity
<< " cost = "
- << getResultPatternCost(Pattern.getDstPattern(), *this)
+ << getResultPatternCost(Pattern.getDstPattern(), CGP)
<< " size = "
- << getResultPatternSize(Pattern.getDstPattern(), *this) << "\n";
+ << getResultPatternSize(Pattern.getDstPattern(), CGP) << "\n";
}
- if (!FirstCodeLine.first) {
+ if (FirstCodeLine.first != 1) {
OS << std::string(Indent, ' ') << "{\n";
Indent += 2;
}
EmitPatterns(Shared, Indent, OS);
- if (!FirstCodeLine.first) {
+ if (FirstCodeLine.first != 1) {
Indent -= 2;
OS << std::string(Indent, ' ') << "}\n";
}
if (Other.size() == 1) {
- PatternToMatch &Pattern = *Other.back().first;
+ const PatternToMatch &Pattern = *Other.back().first;
OS << "\n" << std::string(Indent, ' ') << "// Pattern: ";
Pattern.getSrcPattern()->print(OS);
OS << "\n" << std::string(Indent, ' ') << "// Emits: ";
OS << "\n";
unsigned AddedComplexity = Pattern.getAddedComplexity();
OS << std::string(Indent, ' ') << "// Pattern complexity = "
- << getPatternSize(Pattern.getSrcPattern(), *this) + AddedComplexity
+ << getPatternSize(Pattern.getSrcPattern(), CGP) + AddedComplexity
<< " cost = "
- << getResultPatternCost(Pattern.getDstPattern(), *this)
+ << getResultPatternCost(Pattern.getDstPattern(), CGP)
<< " size = "
- << getResultPatternSize(Pattern.getDstPattern(), *this) << "\n";
+ << getResultPatternSize(Pattern.getDstPattern(), CGP) << "\n";
}
EmitPatterns(Other, Indent, OS);
return;
// Remove this code from all of the patterns that share it.
bool ErasedPatterns = EraseCodeLine(Patterns);
- bool isPredicate = FirstCodeLine.first;
+ bool isPredicate = FirstCodeLine.first == 1;
// Otherwise, every pattern in the list has this line. Emit it.
if (!isPredicate) {
// If the next code line is another predicate, and if all of the pattern
// in this group share the same next line, emit it inline now. Do this
// until we run out of common predicates.
- while (!ErasedPatterns && Patterns.back().second.back().first) {
+ while (!ErasedPatterns && Patterns.back().second.back().first == 1) {
// Check that all of fhe patterns in Patterns end with the same predicate.
bool AllEndWithSamePredicate = true;
for (unsigned i = 0, e = Patterns.size(); i != e; ++i)
OS << std::string(Indent-2, ' ') << "}\n";
}
+static std::string getOpcodeName(Record *Op, CodeGenDAGPatterns &CGP) {
+ return CGP.getSDNodeInfo(Op).getEnumName();
+}
-
-namespace {
- /// CompareByRecordName - An ordering predicate that implements less-than by
- /// comparing the names records.
- struct CompareByRecordName {
- bool operator()(const Record *LHS, const Record *RHS) const {
- // Sort by name first.
- if (LHS->getName() < RHS->getName()) return true;
- // If both names are equal, sort by pointer.
- return LHS->getName() == RHS->getName() && LHS < RHS;
- }
- };
+static std::string getLegalCName(std::string OpName) {
+ std::string::size_type pos = OpName.find("::");
+ if (pos != std::string::npos)
+ OpName.replace(pos, 2, "_");
+ return OpName;
}
void DAGISelEmitter::EmitInstructionSelector(std::ostream &OS) {
- std::string InstNS = Target.inst_begin()->second.Namespace;
+ const CodeGenTarget &Target = CGP.getTargetInfo();
+
+ // Get the namespace to insert instructions into. Make sure not to pick up
+ // "TargetInstrInfo" by accidentally getting the namespace off the PHI
+ // instruction or something.
+ std::string InstNS;
+ for (CodeGenTarget::inst_iterator i = Target.inst_begin(),
+ e = Target.inst_end(); i != e; ++i) {
+ InstNS = i->second.Namespace;
+ if (InstNS != "TargetInstrInfo")
+ break;
+ }
+
if (!InstNS.empty()) InstNS += "::";
// Group the patterns by their top-level opcodes.
- std::map<Record*, std::vector<PatternToMatch*>,
- CompareByRecordName> PatternsByOpcode;
+ std::map<std::string, std::vector<const PatternToMatch*> > PatternsByOpcode;
// All unique target node emission functions.
std::map<std::string, unsigned> EmitFunctions;
- for (unsigned i = 0, e = PatternsToMatch.size(); i != e; ++i) {
- TreePatternNode *Node = PatternsToMatch[i].getSrcPattern();
+ for (CodeGenDAGPatterns::ptm_iterator I = CGP.ptm_begin(),
+ E = CGP.ptm_end(); I != E; ++I) {
+ const PatternToMatch &Pattern = *I;
+
+ TreePatternNode *Node = Pattern.getSrcPattern();
if (!Node->isLeaf()) {
- PatternsByOpcode[Node->getOperator()].push_back(&PatternsToMatch[i]);
+ PatternsByOpcode[getOpcodeName(Node->getOperator(), CGP)].
+ push_back(&Pattern);
} else {
const ComplexPattern *CP;
- if (IntInit *II =
- dynamic_cast<IntInit*>(Node->getLeafValue())) {
- PatternsByOpcode[getSDNodeNamed("imm")].push_back(&PatternsToMatch[i]);
- } else if ((CP = NodeGetComplexPattern(Node, *this))) {
+ if (dynamic_cast<IntInit*>(Node->getLeafValue())) {
+ PatternsByOpcode[getOpcodeName(CGP.getSDNodeNamed("imm"), CGP)].
+ push_back(&Pattern);
+ } else if ((CP = NodeGetComplexPattern(Node, CGP))) {
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]);
+ PatternsByOpcode[getOpcodeName(OpNodes[j], CGP)]
+ .insert(PatternsByOpcode[getOpcodeName(OpNodes[j], CGP)].begin(),
+ &Pattern);
}
} else {
- std::cerr << "Unrecognized opcode '";
+ cerr << "Unrecognized opcode '";
Node->dump();
- std::cerr << "' on tree pattern '";
- std::cerr <<
- PatternsToMatch[i].getDstPattern()->getOperator()->getName();
- std::cerr << "'!\n";
+ cerr << "' on tree pattern '";
+ cerr << Pattern.getDstPattern()->getOperator()->getName() << "'!\n";
exit(1);
}
}
// Emit one Select_* method for each top-level opcode. We do this instead of
// emitting one giant switch statement to support compilers where this will
// result in the recursive functions taking less stack space.
- for (std::map<Record*, std::vector<PatternToMatch*>,
- CompareByRecordName>::iterator PBOI = PatternsByOpcode.begin(),
- E = PatternsByOpcode.end(); PBOI != E; ++PBOI) {
- const std::string &OpName = PBOI->first->getName();
- const SDNodeInfo &OpcodeInfo = getSDNodeInfo(PBOI->first);
- std::vector<PatternToMatch*> &PatternsOfOp = PBOI->second;
+ for (std::map<std::string, std::vector<const PatternToMatch*> >::iterator
+ PBOI = PatternsByOpcode.begin(), E = PatternsByOpcode.end();
+ PBOI != E; ++PBOI) {
+ const std::string &OpName = PBOI->first;
+ std::vector<const PatternToMatch*> &PatternsOfOp = PBOI->second;
assert(!PatternsOfOp.empty() && "No patterns but map has entry?");
// We want to emit all of the matching code now. However, we want to emit
// the matches in order of minimal cost. Sort the patterns so the least
// cost one is at the start.
std::stable_sort(PatternsOfOp.begin(), PatternsOfOp.end(),
- PatternSortingPredicate(*this));
+ PatternSortingPredicate(CGP));
// Split them into groups by type.
- std::map<MVT::ValueType, std::vector<PatternToMatch*> > PatternsByType;
+ std::map<MVT::ValueType, std::vector<const PatternToMatch*> >PatternsByType;
for (unsigned i = 0, e = PatternsOfOp.size(); i != e; ++i) {
- PatternToMatch *Pat = PatternsOfOp[i];
+ const PatternToMatch *Pat = PatternsOfOp[i];
TreePatternNode *SrcPat = Pat->getSrcPattern();
- if (OpcodeInfo.getNumResults() == 0 && SrcPat->getNumChildren() > 0)
- SrcPat = SrcPat->getChild(0);
MVT::ValueType VT = SrcPat->getTypeNum(0);
- std::map<MVT::ValueType, std::vector<PatternToMatch*> >::iterator TI =
+ std::map<MVT::ValueType,
+ std::vector<const PatternToMatch*> >::iterator TI =
PatternsByType.find(VT);
if (TI != PatternsByType.end())
TI->second.push_back(Pat);
else {
- std::vector<PatternToMatch*> PVec;
+ std::vector<const PatternToMatch*> PVec;
PVec.push_back(Pat);
PatternsByType.insert(std::make_pair(VT, PVec));
}
}
- for (std::map<MVT::ValueType, std::vector<PatternToMatch*> >::iterator
+ for (std::map<MVT::ValueType, std::vector<const PatternToMatch*> >::iterator
II = PatternsByType.begin(), EE = PatternsByType.end(); II != EE;
++II) {
MVT::ValueType OpVT = II->first;
- std::vector<PatternToMatch*> &Patterns = II->second;
- typedef std::vector<std::pair<bool, std::string> > CodeList;
- typedef std::vector<std::pair<bool, std::string> >::iterator CodeListI;
+ std::vector<const PatternToMatch*> &Patterns = II->second;
+ typedef std::vector<std::pair<unsigned,std::string> > CodeList;
+ typedef std::vector<std::pair<unsigned,std::string> >::iterator CodeListI;
- std::vector<std::pair<PatternToMatch*, CodeList> > CodeForPatterns;
+ std::vector<std::pair<const PatternToMatch*, CodeList> > CodeForPatterns;
std::vector<std::vector<std::string> > PatternOpcodes;
std::vector<std::vector<std::string> > PatternVTs;
- std::vector<std::set<std::pair<unsigned, std::string> > > PatternDecls;
- std::set<std::pair<unsigned, std::string> > AllGenDecls;
+ std::vector<std::set<std::string> > PatternDecls;
for (unsigned i = 0, e = Patterns.size(); i != e; ++i) {
CodeList GeneratedCode;
- std::set<std::pair<unsigned, std::string> > GeneratedDecl;
+ std::set<std::string> GeneratedDecl;
std::vector<std::string> TargetOpcodes;
std::vector<std::string> TargetVTs;
GenerateCodeForPattern(*Patterns[i], GeneratedCode, GeneratedDecl,
TargetOpcodes, TargetVTs);
- for (std::set<std::pair<unsigned, std::string> >::iterator
- si = GeneratedDecl.begin(), se = GeneratedDecl.end(); si!=se; ++si)
- AllGenDecls.insert(*si);
CodeForPatterns.push_back(std::make_pair(Patterns[i], GeneratedCode));
PatternDecls.push_back(GeneratedDecl);
PatternOpcodes.push_back(TargetOpcodes);
mightNotMatch = false;
for (unsigned j = 0, e = GeneratedCode.size(); j != e; ++j) {
- if (GeneratedCode[j].first) { // predicate.
+ if (GeneratedCode[j].first == 1) { // predicate.
mightNotMatch = true;
break;
}
// If this pattern definitely matches, and if it isn't the last one, the
// patterns after it CANNOT ever match. Error out.
if (mightNotMatch == false && i != CodeForPatterns.size()-1) {
- std::cerr << "Pattern '";
- CodeForPatterns[i+1].first->getSrcPattern()->print(std::cerr);
- std::cerr << "' is impossible to select!\n";
+ cerr << "Pattern '";
+ CodeForPatterns[i].first->getSrcPattern()->print(*cerr.stream());
+ cerr << "' is impossible to select!\n";
exit(1);
}
}
CodeList &GeneratedCode = CodeForPatterns[i].second;
std::vector<std::string> &TargetOpcodes = PatternOpcodes[i];
std::vector<std::string> &TargetVTs = PatternVTs[i];
- std::set<std::pair<unsigned, std::string> > Decls = PatternDecls[i];
+ std::set<std::string> Decls = PatternDecls[i];
+ std::vector<std::string> AddedInits;
int CodeSize = (int)GeneratedCode.size();
int LastPred = -1;
for (int j = CodeSize-1; j >= 0; --j) {
- if (GeneratedCode[j].first) {
+ if (LastPred == -1 && GeneratedCode[j].first == 1)
LastPred = j;
- break;
- }
+ else if (LastPred != -1 && GeneratedCode[j].first == 2)
+ AddedInits.push_back(GeneratedCode[j].second);
}
- std::string CalleeDecls;
- std::string CalleeCode = "(SDOperand &Result, const SDOperand &N";
- std::string CallerCode = "(Result, N";
+ std::string CalleeCode = "(const SDOperand &N";
+ std::string CallerCode = "(N";
for (unsigned j = 0, e = TargetOpcodes.size(); j != e; ++j) {
CalleeCode += ", unsigned Opc" + utostr(j);
CallerCode += ", " + TargetOpcodes[j];
CalleeCode += ", MVT::ValueType VT" + utostr(j);
CallerCode += ", " + TargetVTs[j];
}
- for (std::set<std::pair<unsigned, std::string> >::iterator
+ for (std::set<std::string>::iterator
I = Decls.begin(), E = Decls.end(); I != E; ++I) {
- std::string Name = I->second;
- if (I->first == 0) {
- if (Name == "InFlag" ||
- (Name.size() > 3 &&
- Name[0] == 'T' && Name[1] == 'm' && Name[2] == 'p')) {
- CalleeDecls += " SDOperand " + Name + "(0, 0);\n";
- continue;
- }
- CalleeCode += ", SDOperand &" + Name;
- CallerCode += ", " + Name;
- } else if (I->first == 1) {
- if (Name == "ResNode") {
- CalleeDecls += " SDNode *" + Name + " = NULL;\n";
- continue;
- }
- CalleeCode += ", SDNode *" + Name;
- CallerCode += ", " + Name;
- } else {
- CalleeCode += ", bool " + Name;
- CallerCode += ", " + Name;
- }
+ std::string Name = *I;
+ CalleeCode += ", SDOperand &" + Name;
+ CallerCode += ", " + Name;
}
CallerCode += ");";
CalleeCode += ") ";
// Prevent emission routines from being inlined to reduce selection
// routines stack frame sizes.
- CalleeCode += "NOINLINE ";
- CalleeCode += "{\n" + CalleeDecls;
+ CalleeCode += "DISABLE_INLINE ";
+ CalleeCode += "{\n";
+
+ for (std::vector<std::string>::const_reverse_iterator
+ I = AddedInits.rbegin(), E = AddedInits.rend(); I != E; ++I)
+ CalleeCode += " " + *I + "\n";
+
for (int j = LastPred+1; j < CodeSize; ++j)
- CalleeCode += " " + GeneratedCode[j].second + '\n';
+ CalleeCode += " " + GeneratedCode[j].second + "\n";
for (int j = LastPred+1; j < CodeSize; ++j)
GeneratedCode.pop_back();
CalleeCode += "}\n";
} else {
EmitFuncNum = EmitFunctions.size();
EmitFunctions.insert(std::make_pair(CalleeCode, EmitFuncNum));
- OS << "void " << "Emit_" << utostr(EmitFuncNum) << CalleeCode;
+ OS << "SDNode *Emit_" << utostr(EmitFuncNum) << CalleeCode;
}
// Replace the emission code within selection routines with calls to the
// emission functions.
- CallerCode = "Emit_" + utostr(EmitFuncNum) + CallerCode;
+ CallerCode = "return Emit_" + utostr(EmitFuncNum) + CallerCode;
GeneratedCode.push_back(std::make_pair(false, CallerCode));
- GeneratedCode.push_back(std::make_pair(false, "return;"));
}
// Print function.
- std::string OpVTStr = (OpVT != MVT::isVoid && OpVT != MVT::iPTR)
- ? getEnumName(OpVT).substr(5) : "" ;
+ std::string OpVTStr;
+ if (OpVT == MVT::iPTR) {
+ OpVTStr = "_iPTR";
+ } else if (OpVT == MVT::isVoid) {
+ // Nodes with a void result actually have a first result type of either
+ // Other (a chain) or Flag. Since there is no one-to-one mapping from
+ // void to this case, we handle it specially here.
+ } else {
+ OpVTStr = "_" + getEnumName(OpVT).substr(5); // Skip 'MVT::'
+ }
std::map<std::string, std::vector<std::string> >::iterator OpVTI =
OpcodeVTMap.find(OpName);
if (OpVTI == OpcodeVTMap.end()) {
} else
OpVTI->second.push_back(OpVTStr);
- OS << "void Select_" << OpName << (OpVTStr != "" ? "_" : "")
- << OpVTStr << "(SDOperand &Result, const SDOperand &N) {\n";
-
- // Print all declarations.
- for (std::set<std::pair<unsigned, std::string> >::iterator
- I = AllGenDecls.begin(), E = AllGenDecls.end(); I != E; ++I)
- if (I->first == 0)
- OS << " SDOperand " << I->second << "(0, 0);\n";
- else if (I->first == 1)
- OS << " SDNode *" << I->second << " = NULL;\n";
- else
- OS << " bool " << I->second << " = false;\n";
+ OS << "SDNode *Select_" << getLegalCName(OpName)
+ << OpVTStr << "(const SDOperand &N) {\n";
// Loop through and reverse all of the CodeList vectors, as we will be
// accessing them from their logical front, but accessing the end of a
// Emit all of the patterns now, grouped together to share code.
EmitPatterns(CodeForPatterns, 2, OS);
- // If the last pattern has predicates (which could fail) emit code to catch
- // the case where nothing handles a pattern.
+ // If the last pattern has predicates (which could fail) emit code to
+ // catch the case where nothing handles a pattern.
if (mightNotMatch) {
- OS << " std::cerr << \"Cannot yet select: \";\n";
- if (OpcodeInfo.getEnumName() != "ISD::INTRINSIC_W_CHAIN" &&
- OpcodeInfo.getEnumName() != "ISD::INTRINSIC_WO_CHAIN" &&
- OpcodeInfo.getEnumName() != "ISD::INTRINSIC_VOID") {
+ OS << " cerr << \"Cannot yet select: \";\n";
+ if (OpName != "ISD::INTRINSIC_W_CHAIN" &&
+ OpName != "ISD::INTRINSIC_WO_CHAIN" &&
+ OpName != "ISD::INTRINSIC_VOID") {
OS << " N.Val->dump(CurDAG);\n";
} else {
OS << " unsigned iid = cast<ConstantSDNode>(N.getOperand("
"N.getOperand(0).getValueType() == MVT::Other))->getValue();\n"
- << " std::cerr << \"intrinsic %\"<< "
+ << " cerr << \"intrinsic %\"<< "
"Intrinsic::getName((Intrinsic::ID)iid);\n";
}
- OS << " std::cerr << '\\n';\n"
- << " abort();\n";
+ OS << " cerr << '\\n';\n"
+ << " abort();\n"
+ << " return NULL;\n";
}
OS << "}\n\n";
}
}
// Emit boilerplate.
- OS << "void Select_INLINEASM(SDOperand& Result, SDOperand N) {\n"
+ OS << "SDNode *Select_INLINEASM(SDOperand N) {\n"
<< " std::vector<SDOperand> Ops(N.Val->op_begin(), N.Val->op_end());\n"
- << " AddToQueue(Ops[0], N.getOperand(0)); // Select the chain.\n\n"
- << " // Select the flag operand.\n"
- << " if (Ops.back().getValueType() == MVT::Flag)\n"
- << " AddToQueue(Ops.back(), Ops.back());\n"
- << " SelectInlineAsmMemoryOperands(Ops, *CurDAG);\n"
+ << " SelectInlineAsmMemoryOperands(Ops, *CurDAG);\n\n"
+
+ << " // Ensure that the asm operands are themselves selected.\n"
+ << " for (unsigned j = 0, e = Ops.size(); j != e; ++j)\n"
+ << " AddToISelQueue(Ops[j]);\n\n"
+
<< " std::vector<MVT::ValueType> VTs;\n"
<< " VTs.push_back(MVT::Other);\n"
<< " VTs.push_back(MVT::Flag);\n"
<< " SDOperand New = CurDAG->getNode(ISD::INLINEASM, VTs, &Ops[0], "
"Ops.size());\n"
- << " ReplaceUses(SDOperand(N.Val, 0), New);\n"
- << " ReplaceUses(SDOperand(N.Val, 1), SDOperand(New.Val, 1));\n"
- << " Result = New.getValue(N.ResNo);\n"
- << " return;\n"
+ << " return New.Val;\n"
<< "}\n\n";
+ OS << "SDNode *Select_LABEL(const SDOperand &N) {\n"
+ << " SDOperand Chain = N.getOperand(0);\n"
+ << " SDOperand N1 = N.getOperand(1);\n"
+ << " SDOperand N2 = N.getOperand(2);\n"
+ << " unsigned C1 = cast<ConstantSDNode>(N1)->getValue();\n"
+ << " unsigned C2 = cast<ConstantSDNode>(N2)->getValue();\n"
+ << " SDOperand Tmp1 = CurDAG->getTargetConstant(C1, MVT::i32);\n"
+ << " SDOperand Tmp2 = CurDAG->getTargetConstant(C2, MVT::i32);\n"
+ << " AddToISelQueue(Chain);\n"
+ << " SDOperand Ops[] = { Tmp1, Tmp2, Chain };\n"
+ << " return CurDAG->getTargetNode(TargetInstrInfo::LABEL,\n"
+ << " MVT::Other, Ops, 3);\n"
+ << "}\n\n";
+
+ OS << "SDNode *Select_DECLARE(const SDOperand &N) {\n"
+ << " SDOperand Chain = N.getOperand(0);\n"
+ << " SDOperand N1 = N.getOperand(1);\n"
+ << " SDOperand N2 = N.getOperand(2);\n"
+ << " if (!isa<FrameIndexSDNode>(N1) || !isa<GlobalAddressSDNode>(N2)) {\n"
+ << " cerr << \"Cannot yet select llvm.dbg.declare: \";\n"
+ << " N.Val->dump(CurDAG);\n"
+ << " abort();\n"
+ << " }\n"
+ << " int FI = cast<FrameIndexSDNode>(N1)->getIndex();\n"
+ << " GlobalValue *GV = cast<GlobalAddressSDNode>(N2)->getGlobal();\n"
+ << " SDOperand Tmp1 = "
+ << "CurDAG->getTargetFrameIndex(FI, TLI.getPointerTy());\n"
+ << " SDOperand Tmp2 = "
+ << "CurDAG->getTargetGlobalAddress(GV, TLI.getPointerTy());\n"
+ << " AddToISelQueue(Chain);\n"
+ << " SDOperand Ops[] = { Tmp1, Tmp2, Chain };\n"
+ << " return CurDAG->getTargetNode(TargetInstrInfo::DECLARE,\n"
+ << " MVT::Other, Ops, 3);\n"
+ << "}\n\n";
+
+ OS << "SDNode *Select_EXTRACT_SUBREG(const SDOperand &N) {\n"
+ << " SDOperand N0 = N.getOperand(0);\n"
+ << " SDOperand N1 = N.getOperand(1);\n"
+ << " unsigned C = cast<ConstantSDNode>(N1)->getValue();\n"
+ << " SDOperand Tmp = CurDAG->getTargetConstant(C, MVT::i32);\n"
+ << " AddToISelQueue(N0);\n"
+ << " SDOperand Ops[] = { N0, Tmp };\n"
+ << " return CurDAG->getTargetNode(TargetInstrInfo::EXTRACT_SUBREG,\n"
+ << " N.getValueType(), Ops, 2);\n"
+ << "}\n\n";
+
+ OS << "SDNode *Select_INSERT_SUBREG(const SDOperand &N) {\n"
+ << " SDOperand N0 = N.getOperand(0);\n"
+ << " SDOperand N1 = N.getOperand(1);\n"
+ << " SDOperand N2 = N.getOperand(2);\n"
+ << " unsigned C = cast<ConstantSDNode>(N2)->getValue();\n"
+ << " SDOperand Tmp = CurDAG->getTargetConstant(C, MVT::i32);\n"
+ << " AddToISelQueue(N1);\n"
+ << " SDOperand Ops[] = { N0, N1, Tmp };\n"
+ << " if (N0.getOpcode() == ISD::UNDEF) {\n"
+ << " return CurDAG->getTargetNode(TargetInstrInfo::INSERT_SUBREG,\n"
+ << " N.getValueType(), Ops+1, 2);\n"
+ << " } else {\n"
+ << " AddToISelQueue(N0);\n"
+ << " return CurDAG->getTargetNode(TargetInstrInfo::INSERT_SUBREG,\n"
+ << " N.getValueType(), Ops, 3);\n"
+ << " }\n"
+ << "}\n\n";
+
OS << "// The main instruction selector code.\n"
- << "void SelectCode(SDOperand &Result, SDOperand N) {\n"
+ << "SDNode *SelectCode(SDOperand N) {\n"
<< " if (N.getOpcode() >= ISD::BUILTIN_OP_END &&\n"
<< " N.getOpcode() < (ISD::BUILTIN_OP_END+" << InstNS
<< "INSTRUCTION_LIST_END)) {\n"
- << " Result = N;\n"
- << " return; // Already selected.\n"
+ << " return NULL; // Already selected.\n"
<< " }\n\n"
+ << " MVT::ValueType NVT = N.Val->getValueType(0);\n"
<< " switch (N.getOpcode()) {\n"
<< " default: break;\n"
<< " case ISD::EntryToken: // These leaves remain the same.\n"
<< " case ISD::TargetConstant:\n"
<< " case ISD::TargetConstantPool:\n"
<< " case ISD::TargetFrameIndex:\n"
+ << " case ISD::TargetExternalSymbol:\n"
<< " case ISD::TargetJumpTable:\n"
+ << " case ISD::TargetGlobalTLSAddress:\n"
<< " case ISD::TargetGlobalAddress: {\n"
- << " Result = N;\n"
- << " return;\n"
+ << " return NULL;\n"
<< " }\n"
<< " case ISD::AssertSext:\n"
<< " case ISD::AssertZext: {\n"
- << " AddToQueue(Result, N.getOperand(0));\n"
- << " ReplaceUses(N, Result);\n"
- << " return;\n"
+ << " AddToISelQueue(N.getOperand(0));\n"
+ << " ReplaceUses(N, N.getOperand(0));\n"
+ << " return NULL;\n"
<< " }\n"
<< " case ISD::TokenFactor:\n"
<< " case ISD::CopyFromReg:\n"
<< " case ISD::CopyToReg: {\n"
- << " for (unsigned i = 0, e = N.getNumOperands(); i != e; ++i) {\n"
- << " SDOperand Dummy;\n"
- << " AddToQueue(Dummy, N.getOperand(i));\n"
- << " }\n"
- << " Result = N;\n"
- << " return;\n"
+ << " for (unsigned i = 0, e = N.getNumOperands(); i != e; ++i)\n"
+ << " AddToISelQueue(N.getOperand(i));\n"
+ << " return NULL;\n"
<< " }\n"
- << " case ISD::INLINEASM: Select_INLINEASM(Result, N); return;\n";
+ << " case ISD::INLINEASM: return Select_INLINEASM(N);\n"
+ << " case ISD::LABEL: return Select_LABEL(N);\n"
+ << " case ISD::DECLARE: return Select_DECLARE(N);\n"
+ << " case ISD::EXTRACT_SUBREG: return Select_EXTRACT_SUBREG(N);\n"
+ << " case ISD::INSERT_SUBREG: return Select_INSERT_SUBREG(N);\n";
// Loop over all of the case statements, emiting a call to each method we
// emitted above.
- for (std::map<Record*, std::vector<PatternToMatch*>,
- CompareByRecordName>::iterator PBOI = PatternsByOpcode.begin(),
- E = PatternsByOpcode.end(); PBOI != E; ++PBOI) {
- const SDNodeInfo &OpcodeInfo = getSDNodeInfo(PBOI->first);
- const std::string &OpName = PBOI->first->getName();
+ for (std::map<std::string, std::vector<const PatternToMatch*> >::iterator
+ PBOI = PatternsByOpcode.begin(), E = PatternsByOpcode.end();
+ PBOI != E; ++PBOI) {
+ const std::string &OpName = PBOI->first;
// Potentially multiple versions of select for this opcode. One for each
// ValueType of the node (or its first true operand if it doesn't produce a
// result.
std::map<std::string, std::vector<std::string> >::iterator OpVTI =
OpcodeVTMap.find(OpName);
std::vector<std::string> &OpVTs = OpVTI->second;
- OS << " case " << OpcodeInfo.getEnumName() << ": {\n";
- if (OpVTs.size() == 1) {
- std::string &VTStr = OpVTs[0];
- OS << " Select_" << OpName
- << (VTStr != "" ? "_" : "") << VTStr << "(Result, N);\n";
- } else {
- if (OpcodeInfo.getNumResults())
- OS << " MVT::ValueType NVT = N.Val->getValueType(0);\n";
- else if (OpcodeInfo.hasProperty(SDNodeInfo::SDNPHasChain))
- OS << " MVT::ValueType NVT = (N.getNumOperands() > 1) ?"
- << " N.getOperand(1).Val->getValueType(0) : MVT::isVoid;\n";
- else
- OS << " MVT::ValueType NVT = (N.getNumOperands() > 0) ?"
- << " N.getOperand(0).Val->getValueType(0) : MVT::isVoid;\n";
- int ElseCase = -1;
- bool First = true;
- for (unsigned i = 0, e = OpVTs.size(); i < e; ++i) {
- std::string &VTStr = OpVTs[i];
- if (VTStr == "") {
- ElseCase = i;
- continue;
- }
- OS << (First ? " if" : " else if")
- << " (NVT == MVT::" << VTStr << ")\n"
- << " Select_" << OpName
- << "_" << VTStr << "(Result, N);\n";
- First = false;
+ OS << " case " << OpName << ": {\n";
+ // Keep track of whether we see a pattern that has an iPtr result.
+ bool HasPtrPattern = false;
+ bool HasDefaultPattern = false;
+
+ OS << " switch (NVT) {\n";
+ for (unsigned i = 0, e = OpVTs.size(); i < e; ++i) {
+ std::string &VTStr = OpVTs[i];
+ if (VTStr.empty()) {
+ HasDefaultPattern = true;
+ continue;
+ }
+
+ // If this is a match on iPTR: don't emit it directly, we need special
+ // code.
+ if (VTStr == "_iPTR") {
+ HasPtrPattern = true;
+ continue;
}
- if (ElseCase != -1)
- OS << " else\n" << " Select_" << OpName << "(Result, N);\n";
- else
- OS << " else\n" << " break;\n";
+ OS << " case MVT::" << VTStr.substr(1) << ":\n"
+ << " return Select_" << getLegalCName(OpName)
+ << VTStr << "(N);\n";
}
- OS << " return;\n";
+ OS << " default:\n";
+
+ // If there is an iPTR result version of this pattern, emit it here.
+ if (HasPtrPattern) {
+ OS << " if (NVT == TLI.getPointerTy())\n";
+ OS << " return Select_" << getLegalCName(OpName) <<"_iPTR(N);\n";
+ }
+ if (HasDefaultPattern) {
+ OS << " return Select_" << getLegalCName(OpName) << "(N);\n";
+ }
+ OS << " break;\n";
+ OS << " }\n";
+ OS << " break;\n";
OS << " }\n";
}
OS << " } // end of big switch.\n\n"
- << " std::cerr << \"Cannot yet select: \";\n"
+ << " cerr << \"Cannot yet select: \";\n"
<< " if (N.getOpcode() != ISD::INTRINSIC_W_CHAIN &&\n"
<< " N.getOpcode() != ISD::INTRINSIC_WO_CHAIN &&\n"
<< " N.getOpcode() != ISD::INTRINSIC_VOID) {\n"
<< " } else {\n"
<< " unsigned iid = cast<ConstantSDNode>(N.getOperand("
"N.getOperand(0).getValueType() == MVT::Other))->getValue();\n"
- << " std::cerr << \"intrinsic %\"<< "
- "Intrinsic::getName((Intrinsic::ID)iid);\n"
+ << " cerr << \"intrinsic %\"<< "
+ "Intrinsic::getName((Intrinsic::ID)iid);\n"
<< " }\n"
- << " std::cerr << '\\n';\n"
+ << " cerr << '\\n';\n"
<< " abort();\n"
+ << " return NULL;\n"
<< "}\n";
}
void DAGISelEmitter::run(std::ostream &OS) {
- EmitSourceFileHeader("DAG Instruction Selector for the " + Target.getName() +
- " target", OS);
+ EmitSourceFileHeader("DAG Instruction Selector for the " +
+ CGP.getTargetInfo().getName() + " target", OS);
OS << "// *** NOTE: This file is #included into the middle of the target\n"
<< "// *** instruction selector class. These functions are really "
<< "methods.\n\n";
- OS << "#if defined(__GNUC__) && \\\n";
- OS << " ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 4)))\n";
- OS << "#define NOINLINE __attribute__((noinline))\n";
- OS << "#else\n";
- OS << "#define NOINLINE\n";
- OS << "#endif\n\n";
-
OS << "// Instruction selector priority queue:\n"
<< "std::vector<SDNode*> ISelQueue;\n";
OS << "/// Keep track of nodes which have already been added to queue.\n"
<< "unsigned char *ISelQueued;\n";
OS << "/// Keep track of nodes which have already been selected.\n"
<< "unsigned char *ISelSelected;\n";
- OS << "/// Dummy parameter to ReplaceAllUsesOfValueWith().\n"
- << "std::vector<SDNode*> ISelKilled;\n\n";
+
+
+ OS << "/// IsChainCompatible - Returns true if Chain is Op or Chain does\n";
+ OS << "/// not reach Op.\n";
+ OS << "static bool IsChainCompatible(SDNode *Chain, SDNode *Op) {\n";
+ OS << " if (Chain->getOpcode() == ISD::EntryToken)\n";
+ OS << " return true;\n";
+ OS << " else if (Chain->getOpcode() == ISD::TokenFactor)\n";
+ OS << " return false;\n";
+ OS << " else if (Chain->getNumOperands() > 0) {\n";
+ OS << " SDOperand C0 = Chain->getOperand(0);\n";
+ OS << " if (C0.getValueType() == MVT::Other)\n";
+ OS << " return C0.Val != Op && IsChainCompatible(C0.Val, Op);\n";
+ OS << " }\n";
+ OS << " return true;\n";
+ OS << "}\n";
OS << "/// Sorting functions for the selection queue.\n"
<< "struct isel_sort : public std::binary_function"
OS << " return ISelSelected[Id / 8] & (1 << (Id % 8));\n";
OS << "}\n\n";
- OS << "inline void AddToQueue(SDOperand &Result, SDOperand N) {\n";
- OS << " Result = N;\n";
+ OS << "void AddToISelQueue(SDOperand N) DISABLE_INLINE {\n";
OS << " int Id = N.Val->getNodeId();\n";
OS << " if (Id != -1 && !isQueued(Id)) {\n";
OS << " ISelQueue.push_back(N.Val);\n";
OS << " }\n";
OS << "}\n\n";
- OS << "inline void RemoveKilled() {\n";
-OS << " unsigned NumKilled = ISelKilled.size();\n";
- OS << " if (NumKilled) {\n";
- OS << " for (unsigned i = 0; i != NumKilled; ++i) {\n";
- OS << " SDNode *Temp = ISelKilled[i];\n";
- OS << " std::remove(ISelQueue.begin(), ISelQueue.end(), Temp);\n";
- OS << " };\n";
- OS << " std::make_heap(ISelQueue.begin(), ISelQueue.end(), isel_sort());\n";
- OS << " ISelKilled.clear();\n";
- OS << " }\n";
+
+ OS << "class VISIBILITY_HIDDEN ISelQueueUpdater :\n";
+ OS << " public SelectionDAG::DAGUpdateListener {\n";
+ OS << " std::vector<SDNode*> &ISelQueue;\n";
+ OS << " bool HadDelete;\n";
+ OS << " public:\n";
+ OS << " ISelQueueUpdater(std::vector<SDNode*> &isq)\n";
+ OS << " : ISelQueue(isq), HadDelete(false) {}\n";
+ OS << " \n";
+ OS << " bool hadDelete() const { return HadDelete; }\n";
+ OS << " \n";
+ OS << " virtual void NodeDeleted(SDNode *N) {\n";
+ OS << " ISelQueue.erase(std::remove(ISelQueue.begin(), ISelQueue.end(),";
+ OS << " N),\n ISelQueue.end());\n";
+ OS << " HadDelete = true;\n";
+ OS << " }\n";
+ OS << " \n";
+ OS << " // Ignore updates.\n";
+ OS << " virtual void NodeUpdated(SDNode *N) {}\n";
+ OS << " };\n";
+
+ OS << "inline void UpdateQueue(const ISelQueueUpdater &ISQU) {\n";
+ OS << " if (ISQU.hadDelete())\n";
+ OS << " std::make_heap(ISelQueue.begin(), ISelQueue.end(),isel_sort());\n";
OS << "}\n\n";
- OS << "inline void ReplaceUses(SDOperand F, SDOperand T) {\n";
- OS << " CurDAG->ReplaceAllUsesOfValueWith(F, T, ISelKilled);\n";
+ OS << "void ReplaceUses(SDOperand F, SDOperand T) DISABLE_INLINE {\n";
+ OS << " ISelQueueUpdater ISQU(ISelQueue);\n";
+ OS << " CurDAG->ReplaceAllUsesOfValueWith(F, T, &ISQU);\n";
OS << " setSelected(F.Val->getNodeId());\n";
- OS << " RemoveKilled();\n";
+ OS << " UpdateQueue(ISQU);\n";
+ OS << "}\n";
+ OS << "void ReplaceUses(SDNode *F, SDNode *T) DISABLE_INLINE {\n";
+ OS << " unsigned FNumVals = F->getNumValues();\n";
+ OS << " unsigned TNumVals = T->getNumValues();\n";
+ OS << " ISelQueueUpdater ISQU(ISelQueue);\n";
+ OS << " if (FNumVals != TNumVals) {\n";
+ OS << " for (unsigned i = 0, e = std::min(FNumVals, TNumVals); "
+ << "i < e; ++i)\n";
+ OS << " CurDAG->ReplaceAllUsesOfValueWith(SDOperand(F, i), "
+ << "SDOperand(T, i), &ISQU);\n";
+ OS << " } else {\n";
+ OS << " CurDAG->ReplaceAllUsesWith(F, T, &ISQU);\n";
+ OS << " }\n";
+ OS << " setSelected(F->getNodeId());\n";
+ OS << " UpdateQueue(ISQU);\n";
OS << "}\n\n";
OS << "// SelectRoot - Top level entry to DAG isel.\n";
OS << " memset(ISelQueued, 0, NumBytes);\n";
OS << " memset(ISelSelected, 0, NumBytes);\n";
OS << "\n";
- OS << " SDOperand ResNode;\n";
- OS << " Select(ResNode, Root);\n";
+ OS << " // Create a dummy node (which is not added to allnodes), that adds\n"
+ << " // a reference to the root node, preventing it from being deleted,\n"
+ << " // and tracking any changes of the root.\n"
+ << " HandleSDNode Dummy(CurDAG->getRoot());\n"
+ << " ISelQueue.push_back(CurDAG->getRoot().Val);\n";
OS << " while (!ISelQueue.empty()) {\n";
- OS << " SDOperand Tmp;\n";
OS << " SDNode *Node = ISelQueue.front();\n";
OS << " std::pop_heap(ISelQueue.begin(), ISelQueue.end(), isel_sort());\n";
OS << " ISelQueue.pop_back();\n";
- OS << " if (!isSelected(Node->getNodeId()))\n";
- OS << " Select(Tmp, SDOperand(Node, 0));\n";
+ OS << " if (!isSelected(Node->getNodeId())) {\n";
+ OS << " SDNode *ResNode = Select(SDOperand(Node, 0));\n";
+ OS << " if (ResNode != Node) {\n";
+ OS << " if (ResNode)\n";
+ OS << " ReplaceUses(Node, ResNode);\n";
+ OS << " if (Node->use_empty()) { // Don't delete EntryToken, etc.\n";
+ OS << " ISelQueueUpdater ISQU(ISelQueue);\n";
+ OS << " CurDAG->RemoveDeadNode(Node, &ISQU);\n";
+ OS << " UpdateQueue(ISQU);\n";
+ OS << " }\n";
+ OS << " }\n";
+ OS << " }\n";
OS << " }\n";
OS << "\n";
OS << " delete[] ISelQueued;\n";
OS << " ISelQueued = NULL;\n";
OS << " delete[] ISelSelected;\n";
OS << " ISelSelected = NULL;\n";
- OS << " return ResNode;\n";
+ OS << " return Dummy.getValue();\n";
OS << "}\n";
- Intrinsics = LoadIntrinsics(Records);
- ParseNodeInfo();
- ParseNodeTransforms(OS);
- ParseComplexPatterns();
- ParsePatternFragments(OS);
- ParseInstructions();
- ParsePatterns();
+ EmitNodeTransforms(OS);
+ EmitPredicateFunctions(OS);
- // Generate variants. For example, commutative patterns can match
- // multiple ways. Add them to PatternsToMatch as well.
- GenerateVariants();
-
-
- 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].getSrcPattern()->dump();
- std::cerr << "\nRESULT: ";PatternsToMatch[i].getDstPattern()->dump();
- std::cerr << "\n";
- });
+ DOUT << "\n\nALL PATTERNS TO MATCH:\n\n";
+ for (CodeGenDAGPatterns::ptm_iterator I = CGP.ptm_begin(), E = CGP.ptm_end();
+ I != E; ++I) {
+ DOUT << "PATTERN: "; DEBUG(I->getSrcPattern()->dump());
+ DOUT << "\nRESULT: "; DEBUG(I->getDstPattern()->dump());
+ DOUT << "\n";
+ }
// At this point, we have full information about the 'Patterns' we need to
// parse, both implicitly from instructions as well as from explicit pattern
// definitions. Emit the resultant instruction selector.
EmitInstructionSelector(OS);
- for (std::map<Record*, TreePattern*>::iterator I = PatternFragments.begin(),
- E = PatternFragments.end(); I != E; ++I)
- delete I->second;
- PatternFragments.clear();
-
- Instructions.clear();
}
projects / oota-llvm.git / blobdiff