mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 22:32:47 +00:00
084df627c8
in some more places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99366 91177308-0d34-0410-b5e6-96231b3b80d8
402 lines
13 KiB
C++
402 lines
13 KiB
C++
//===- DAGISelMatcher.cpp - Representation of DAG pattern matcher ---------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "DAGISelMatcher.h"
|
|
#include "CodeGenDAGPatterns.h"
|
|
#include "CodeGenTarget.h"
|
|
#include "Record.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
using namespace llvm;
|
|
|
|
void Matcher::dump() const {
|
|
print(errs(), 0);
|
|
}
|
|
|
|
void Matcher::print(raw_ostream &OS, unsigned indent) const {
|
|
printImpl(OS, indent);
|
|
if (Next)
|
|
return Next->print(OS, indent);
|
|
}
|
|
|
|
void Matcher::printOne(raw_ostream &OS) const {
|
|
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 == 0) return 0;
|
|
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;
|
|
}
|
|
}
|
|
|
|
/// canMoveBefore - 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];
|
|
}
|
|
|
|
|
|
// 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) {
|
|
if (getChild(i) == 0)
|
|
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) << "Record\n";
|
|
}
|
|
|
|
void RecordChildMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "RecordChild: " << ChildNo << '\n';
|
|
}
|
|
|
|
void RecordMemRefMatcher::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 MoveChildMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "MoveChild " << ChildNo << '\n';
|
|
}
|
|
|
|
void MoveParentMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "MoveParent\n";
|
|
}
|
|
|
|
void CheckSameMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckSame " << MatchNumber << '\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';
|
|
}
|
|
|
|
void CheckOpcodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckOpcode " << Opcode.getEnumName() << '\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) << ", 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) << "CheckChildType " << ChildNo << " "
|
|
<< getEnumName(Type) << '\n';
|
|
}
|
|
|
|
|
|
void CheckIntegerMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckInteger " << Value << '\n';
|
|
}
|
|
|
|
void CheckCondCodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckCondCode ISD::" << CondCodeName << '\n';
|
|
}
|
|
|
|
void CheckValueTypeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckValueType MVT::" << TypeName << '\n';
|
|
}
|
|
|
|
void CheckComplexPatMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckComplexPat " << Pattern.getSelectFunc() << '\n';
|
|
}
|
|
|
|
void CheckAndImmMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckAndImm " << Value << '\n';
|
|
}
|
|
|
|
void CheckOrImmMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CheckOrImm " << Value << '\n';
|
|
}
|
|
|
|
void CheckFoldableChainNodeMatcher::printImpl(raw_ostream &OS,
|
|
unsigned indent) const {
|
|
OS.indent(indent) << "CheckFoldableChainNode\n";
|
|
}
|
|
|
|
void EmitIntegerMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitInteger " << Val << " VT=" << VT << '\n';
|
|
}
|
|
|
|
void EmitStringIntegerMatcher::
|
|
printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitStringInteger " << Val << " VT=" << VT << '\n';
|
|
}
|
|
|
|
void EmitRegisterMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitRegister ";
|
|
if (Reg)
|
|
OS << Reg->getName();
|
|
else
|
|
OS << "zero_reg";
|
|
OS << " VT=" << VT << '\n';
|
|
}
|
|
|
|
void EmitConvertToTargetMatcher::
|
|
printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitConvertToTarget " << Slot << '\n';
|
|
}
|
|
|
|
void EmitMergeInputChainsMatcher::
|
|
printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitMergeInputChains <todo: args>\n";
|
|
}
|
|
|
|
void EmitCopyToRegMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitCopyToReg <todo: args>\n";
|
|
}
|
|
|
|
void EmitNodeXFormMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "EmitNodeXForm " << NodeXForm->getName()
|
|
<< " Slot=" << Slot << '\n';
|
|
}
|
|
|
|
|
|
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 << '(';
|
|
for (unsigned i = 0, e = Operands.size(); i != e; ++i)
|
|
OS << Operands[i] << ' ';
|
|
OS << ")\n";
|
|
}
|
|
|
|
void MarkFlagResultsMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "MarkFlagResults <todo: args>\n";
|
|
}
|
|
|
|
void CompleteMatchMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
|
|
OS.indent(indent) << "CompleteMatch <todo args>\n";
|
|
OS.indent(indent) << "Src = " << *Pattern.getSrcPattern() << "\n";
|
|
OS.indent(indent) << "Dst = " << *Pattern.getDstPattern() << "\n";
|
|
}
|
|
|
|
// getHashImpl Implementation.
|
|
|
|
unsigned CheckPatternPredicateMatcher::getHashImpl() const {
|
|
return HashString(Predicate);
|
|
}
|
|
|
|
unsigned CheckPredicateMatcher::getHashImpl() const {
|
|
return HashString(PredName);
|
|
}
|
|
|
|
unsigned CheckOpcodeMatcher::getHashImpl() const {
|
|
return HashString(Opcode.getEnumName());
|
|
}
|
|
|
|
unsigned CheckCondCodeMatcher::getHashImpl() const {
|
|
return HashString(CondCodeName);
|
|
}
|
|
|
|
unsigned CheckValueTypeMatcher::getHashImpl() const {
|
|
return HashString(TypeName);
|
|
}
|
|
|
|
unsigned EmitStringIntegerMatcher::getHashImpl() const {
|
|
return HashString(Val) ^ VT;
|
|
}
|
|
|
|
template<typename It>
|
|
static unsigned HashUnsigneds(It I, It E) {
|
|
unsigned Result = 0;
|
|
for (; I != E; ++I)
|
|
Result = (Result<<3) ^ *I;
|
|
return Result;
|
|
}
|
|
|
|
unsigned EmitMergeInputChainsMatcher::getHashImpl() const {
|
|
return HashUnsigneds(ChainNodes.begin(), ChainNodes.end());
|
|
}
|
|
|
|
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->HasInFlag == HasInFlag && M->HasOutFlag == HasOutFlag &&
|
|
M->HasMemRefs == HasMemRefs &&
|
|
M->NumFixedArityOperands == NumFixedArityOperands;
|
|
}
|
|
|
|
unsigned EmitNodeMatcherCommon::getHashImpl() const {
|
|
return (HashString(OpcodeName) << 4) | Operands.size();
|
|
}
|
|
|
|
|
|
unsigned MarkFlagResultsMatcher::getHashImpl() const {
|
|
return HashUnsigneds(FlagResultNodes.begin(), FlagResultNodes.end());
|
|
}
|
|
|
|
unsigned CompleteMatchMatcher::getHashImpl() const {
|
|
return HashUnsigneds(Results.begin(), Results.end()) ^
|
|
((unsigned)(intptr_t)&Pattern << 8);
|
|
}
|
|
|
|
// isContradictoryImpl Implementations.
|
|
|
|
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());
|
|
return false;
|
|
}
|
|
|
|
bool CheckChildTypeMatcher::isContradictoryImpl(const Matcher *M) const {
|
|
if (const CheckChildTypeMatcher *CC = dyn_cast<CheckChildTypeMatcher>(M)) {
|
|
// If the two checks are about different nodes, we don't know if they
|
|
// 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 CheckValueTypeMatcher::isContradictoryImpl(const Matcher *M) const {
|
|
if (const CheckValueTypeMatcher *CVT = dyn_cast<CheckValueTypeMatcher>(M))
|
|
return CVT->getTypeName() != getTypeName();
|
|
return false;
|
|
}
|
|
|