#include "DAGISelMatcher.h"
#include "CodeGenDAGPatterns.h"
#include "CodeGenTarget.h"
-#include "Record.h"
-#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/TableGen/Record.h"
using namespace llvm;
+void Matcher::anchor() { }
+
void Matcher::dump() const {
print(errs(), 0);
}
printImpl(OS, 0);
}
+/// unlinkNode - Unlink the specified node from this chain. If Other == this,
+/// we unlink the next pointer and return it. Otherwise we unlink Other from
+/// the list and return this.
+Matcher *Matcher::unlinkNode(Matcher *Other) {
+ if (this == Other)
+ return takeNext();
+
+ // Scan until we find the predecessor of Other.
+ Matcher *Cur = this;
+ for (; Cur && Cur->getNext() != Other; Cur = Cur->getNext())
+ /*empty*/;
+
+ if (!Cur) return nullptr;
+ Cur->takeNext();
+ Cur->setNext(Other->takeNext());
+ return this;
+}
+
+/// canMoveBefore - Return true if this matcher is the same as Other, or if
+/// we can move this matcher past all of the nodes in-between Other and this
+/// node. Other must be equal to or before this.
+bool Matcher::canMoveBefore(const Matcher *Other) const {
+ for (;; Other = Other->getNext()) {
+ assert(Other && "Other didn't come before 'this'?");
+ if (this == Other) return true;
+
+ // We have to be able to move this node across the Other node.
+ if (!canMoveBeforeNode(Other))
+ return false;
+ }
+}
+
+/// canMoveBeforeNode - Return true if it is safe to move the current matcher
+/// across the specified one.
+bool Matcher::canMoveBeforeNode(const Matcher *Other) const {
+ // We can move simple predicates before record nodes.
+ if (isSimplePredicateNode())
+ return Other->isSimplePredicateOrRecordNode();
+
+ // We can move record nodes across simple predicates.
+ if (isSimplePredicateOrRecordNode())
+ return isSimplePredicateNode();
+
+ // We can't move record nodes across each other etc.
+ return false;
+}
+
+
ScopeMatcher::~ScopeMatcher() {
for (unsigned i = 0, e = Children.size(); i != e; ++i)
delete Children[i];
}
+SwitchOpcodeMatcher::~SwitchOpcodeMatcher() {
+ for (unsigned i = 0, e = Cases.size(); i != e; ++i)
+ delete Cases[i].second;
+}
+
+SwitchTypeMatcher::~SwitchTypeMatcher() {
+ for (unsigned i = 0, e = Cases.size(); i != e; ++i)
+ delete Cases[i].second;
+}
+
+CheckPredicateMatcher::CheckPredicateMatcher(const TreePredicateFn &pred)
+ : Matcher(CheckPredicate), Pred(pred.getOrigPatFragRecord()) {}
+
+TreePredicateFn CheckPredicateMatcher::getPredicate() const {
+ return TreePredicateFn(Pred);
+}
+
+
// printImpl methods.
void ScopeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "Scope\n";
- for (unsigned i = 0, e = getNumChildren(); i != e; ++i)
- getChild(i)->print(OS, indent+2);
+ for (unsigned i = 0, e = getNumChildren(); i != e; ++i) {
+ if (!getChild(i))
+ OS.indent(indent+1) << "NULL POINTER\n";
+ else
+ getChild(i)->print(OS, indent+2);
+ }
}
void RecordMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "RecordMemRef\n";
}
-void CaptureFlagInputMatcher::printImpl(raw_ostream &OS, unsigned indent) const{
- OS.indent(indent) << "CaptureFlagInput\n";
+void CaptureGlueInputMatcher::printImpl(raw_ostream &OS, unsigned indent) const{
+ OS.indent(indent) << "CaptureGlueInput\n";
}
void MoveChildMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckSame " << MatchNumber << '\n';
}
+void CheckChildSameMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
+ OS.indent(indent) << "CheckChild" << ChildNo << "Same\n";
+}
+
void CheckPatternPredicateMatcher::
printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckPatternPredicate " << Predicate << '\n';
}
void CheckPredicateMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
- OS.indent(indent) << "CheckPredicate " << PredName << '\n';
+ OS.indent(indent) << "CheckPredicate " << getPredicate().getFnName() << '\n';
}
void CheckOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
- OS.indent(indent) << "CheckOpcode " << OpcodeName << '\n';
+ OS.indent(indent) << "CheckOpcode " << Opcode.getEnumName() << '\n';
}
-void CheckMultiOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const{
- OS.indent(indent) << "CheckMultiOpcode <todo args>\n";
+void SwitchOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
+ OS.indent(indent) << "SwitchOpcode: {\n";
+ for (unsigned i = 0, e = Cases.size(); i != e; ++i) {
+ OS.indent(indent) << "case " << Cases[i].first->getEnumName() << ":\n";
+ Cases[i].second->print(OS, indent+2);
+ }
+ OS.indent(indent) << "}\n";
}
+
void CheckTypeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
- OS.indent(indent) << "CheckType " << getEnumName(Type) << '\n';
+ OS.indent(indent) << "CheckType " << getEnumName(Type) << ", ResNo="
+ << ResNo << '\n';
+}
+
+void SwitchTypeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
+ OS.indent(indent) << "SwitchType: {\n";
+ for (unsigned i = 0, e = Cases.size(); i != e; ++i) {
+ OS.indent(indent) << "case " << getEnumName(Cases[i].first) << ":\n";
+ Cases[i].second->print(OS, indent+2);
+ }
+ OS.indent(indent) << "}\n";
}
void CheckChildTypeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckInteger " << Value << '\n';
}
+void CheckChildIntegerMatcher::printImpl(raw_ostream &OS,
+ unsigned indent) const {
+ OS.indent(indent) << "CheckChildInteger " << ChildNo << " " << Value << '\n';
+}
+
void CheckCondCodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckCondCode ISD::" << CondCodeName << '\n';
}
OS.indent(indent) << "CheckFoldableChainNode\n";
}
-void CheckChainCompatibleMatcher::printImpl(raw_ostream &OS,
- unsigned indent) const {
- OS.indent(indent) << "CheckChainCompatible " << PreviousOp << "\n";
-}
-
void EmitIntegerMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "EmitInteger " << Val << " VT=" << VT << '\n';
}
}
-void EmitNodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
- OS.indent(indent) << "EmitNode: " << OpcodeName << ": <todo flags> ";
+void EmitNodeMatcherCommon::printImpl(raw_ostream &OS, unsigned indent) const {
+ OS.indent(indent);
+ OS << (isa<MorphNodeToMatcher>(this) ? "MorphNodeTo: " : "EmitNode: ")
+ << OpcodeName << ": <todo flags> ";
for (unsigned i = 0, e = VTs.size(); i != e; ++i)
OS << ' ' << getEnumName(VTs[i]);
OS << ")\n";
}
-void MarkFlagResultsMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
- OS.indent(indent) << "MarkFlagResults <todo: args>\n";
+void MarkGlueResultsMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
+ OS.indent(indent) << "MarkGlueResults <todo: args>\n";
}
void CompleteMatchMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
}
unsigned CheckPredicateMatcher::getHashImpl() const {
- return HashString(PredName);
+ return HashString(getPredicate().getFnName());
}
unsigned CheckOpcodeMatcher::getHashImpl() const {
- return HashString(OpcodeName);
-}
-
-unsigned CheckMultiOpcodeMatcher::getHashImpl() const {
- unsigned Result = 0;
- for (unsigned i = 0, e = OpcodeNames.size(); i != e; ++i)
- Result |= HashString(OpcodeNames[i]);
- return Result;
+ return HashString(Opcode.getEnumName());
}
unsigned CheckCondCodeMatcher::getHashImpl() const {
return HashUnsigneds(ChainNodes.begin(), ChainNodes.end());
}
-bool EmitNodeMatcher::isEqualImpl(const Matcher *m) const {
- const EmitNodeMatcher *M = cast<EmitNodeMatcher>(m);
+bool CheckOpcodeMatcher::isEqualImpl(const Matcher *M) const {
+ // Note: pointer equality isn't enough here, we have to check the enum names
+ // to ensure that the nodes are for the same opcode.
+ return cast<CheckOpcodeMatcher>(M)->Opcode.getEnumName() ==
+ Opcode.getEnumName();
+}
+
+bool EmitNodeMatcherCommon::isEqualImpl(const Matcher *m) const {
+ const EmitNodeMatcherCommon *M = cast<EmitNodeMatcherCommon>(m);
return M->OpcodeName == OpcodeName && M->VTs == VTs &&
M->Operands == Operands && M->HasChain == HasChain &&
- M->HasFlag == HasFlag && M->HasMemRefs == HasMemRefs &&
+ M->HasInGlue == HasInGlue && M->HasOutGlue == HasOutGlue &&
+ M->HasMemRefs == HasMemRefs &&
M->NumFixedArityOperands == NumFixedArityOperands;
}
-unsigned EmitNodeMatcher::getHashImpl() const {
+unsigned EmitNodeMatcherCommon::getHashImpl() const {
return (HashString(OpcodeName) << 4) | Operands.size();
}
-unsigned MarkFlagResultsMatcher::getHashImpl() const {
- return HashUnsigneds(FlagResultNodes.begin(), FlagResultNodes.end());
+void EmitNodeMatcher::anchor() { }
+
+void MorphNodeToMatcher::anchor() { }
+
+unsigned MarkGlueResultsMatcher::getHashImpl() const {
+ return HashUnsigneds(GlueResultNodes.begin(), GlueResultNodes.end());
}
unsigned CompleteMatchMatcher::getHashImpl() const {
- return HashUnsigneds(Results.begin(), Results.end()) ^
+ return HashUnsigneds(Results.begin(), Results.end()) ^
((unsigned)(intptr_t)&Pattern << 8);
}
// isContradictoryImpl Implementations.
-bool CheckOpcodeMatcher::isContradictoryImpl(const Matcher *M) const {
- if (const CheckOpcodeMatcher *COM = dyn_cast<CheckOpcodeMatcher>(M)) {
- // One node can't have two different opcodes!
- return COM->getOpcodeName() != getOpcodeName();
- }
-
- // TODO: CheckMultiOpcodeMatcher?
-
- // This is a special common case we see a lot in the X86 backend, we know that
- // ISD::STORE nodes can't have non-void type.
- if (const CheckTypeMatcher *CT = dyn_cast<CheckTypeMatcher>(M))
- // FIXME: This sucks, get void nodes from type constraints.
- return (getOpcodeName() == "ISD::STORE" ||
- getOpcodeName() == "ISD::INTRINSIC_VOID") &&
- CT->getType() != MVT::isVoid;
-
- return false;
-}
-
static bool TypesAreContradictory(MVT::SimpleValueType T1,
MVT::SimpleValueType T2) {
// If the two types are the same, then they are the same, so they don't
// contradict.
if (T1 == T2) return false;
-
+
// If either type is about iPtr, then they don't conflict unless the other
// one is not a scalar integer type.
if (T1 == MVT::iPTR)
return !MVT(T2).isInteger() || MVT(T2).isVector();
-
+
if (T2 == MVT::iPTR)
return !MVT(T1).isInteger() || MVT(T1).isVector();
-
+
// Otherwise, they are two different non-iPTR types, they conflict.
return true;
}
+bool CheckOpcodeMatcher::isContradictoryImpl(const Matcher *M) const {
+ if (const CheckOpcodeMatcher *COM = dyn_cast<CheckOpcodeMatcher>(M)) {
+ // One node can't have two different opcodes!
+ // Note: pointer equality isn't enough here, we have to check the enum names
+ // to ensure that the nodes are for the same opcode.
+ return COM->getOpcode().getEnumName() != getOpcode().getEnumName();
+ }
+
+ // If the node has a known type, and if the type we're checking for is
+ // different, then we know they contradict. For example, a check for
+ // ISD::STORE will never be true at the same time a check for Type i32 is.
+ if (const CheckTypeMatcher *CT = dyn_cast<CheckTypeMatcher>(M)) {
+ // If checking for a result the opcode doesn't have, it can't match.
+ if (CT->getResNo() >= getOpcode().getNumResults())
+ return true;
+
+ MVT::SimpleValueType NodeType = getOpcode().getKnownType(CT->getResNo());
+ if (NodeType != MVT::Other)
+ return TypesAreContradictory(NodeType, CT->getType());
+ }
+
+ return false;
+}
+
bool CheckTypeMatcher::isContradictoryImpl(const Matcher *M) const {
if (const CheckTypeMatcher *CT = dyn_cast<CheckTypeMatcher>(M))
return TypesAreContradictory(getType(), CT->getType());
// conflict!
if (CC->getChildNo() != getChildNo())
return false;
-
+
return TypesAreContradictory(getType(), CC->getType());
}
return false;
}
-
+
bool CheckIntegerMatcher::isContradictoryImpl(const Matcher *M) const {
if (const CheckIntegerMatcher *CIM = dyn_cast<CheckIntegerMatcher>(M))
return CIM->getValue() != getValue();
return false;
}
+
+bool CheckChildIntegerMatcher::isContradictoryImpl(const Matcher *M) const {
+ if (const CheckChildIntegerMatcher *CCIM = dyn_cast<CheckChildIntegerMatcher>(M)) {
+ // If the two checks are about different nodes, we don't know if they
+ // conflict!
+ if (CCIM->getChildNo() != getChildNo())
+ return false;
+
+ return CCIM->getValue() != getValue();
+ }
+ return false;
+}
+
+bool CheckValueTypeMatcher::isContradictoryImpl(const Matcher *M) const {
+ if (const CheckValueTypeMatcher *CVT = dyn_cast<CheckValueTypeMatcher>(M))
+ return CVT->getTypeName() != getTypeName();
+ return false;
+}
+
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