//
//===----------------------------------------------------------------------===//
//
-// This file contains code to generate C++ code a matcher.
+// This file contains code to generate C++ code for a matcher.
//
//===----------------------------------------------------------------------===//
#include "DAGISelMatcher.h"
#include "CodeGenDAGPatterns.h"
-#include "Record.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/TinyPtrVector.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/TableGen/Record.h"
using namespace llvm;
enum {
namespace {
class MatcherTableEmitter {
- StringMap<unsigned> NodePredicateMap, PatternPredicateMap;
- std::vector<std::string> NodePredicates, PatternPredicates;
+ const CodeGenDAGPatterns &CGP;
+
+ DenseMap<TreePattern *, unsigned> NodePredicateMap;
+ std::vector<TreePredicateFn> NodePredicates;
+
+ // We de-duplicate the predicates by code string, and use this map to track
+ // all the patterns with "identical" predicates.
+ StringMap<TinyPtrVector<TreePattern *>> NodePredicatesByCodeToRun;
+
+ StringMap<unsigned> PatternPredicateMap;
+ std::vector<std::string> PatternPredicates;
DenseMap<const ComplexPattern*, unsigned> ComplexPatternMap;
std::vector<const ComplexPattern*> ComplexPatterns;
DenseMap<Record*, unsigned> NodeXFormMap;
std::vector<Record*> NodeXForms;
- // Per opcode frequence count.
- std::vector<unsigned> Histogram;
public:
- MatcherTableEmitter() {}
+ MatcherTableEmitter(const CodeGenDAGPatterns &cgp)
+ : CGP(cgp) {}
unsigned EmitMatcherList(const Matcher *N, unsigned Indent,
unsigned StartIdx, formatted_raw_ostream &OS);
-
- void EmitPredicateFunctions(const CodeGenDAGPatterns &CGP,
- formatted_raw_ostream &OS);
-
- void EmitHistogram(formatted_raw_ostream &OS);
+
+ void EmitPredicateFunctions(formatted_raw_ostream &OS);
+
+ void EmitHistogram(const Matcher *N, formatted_raw_ostream &OS);
private:
unsigned EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
formatted_raw_ostream &OS);
-
- unsigned getNodePredicate(StringRef PredName) {
- unsigned &Entry = NodePredicateMap[PredName];
+
+ unsigned getNodePredicate(TreePredicateFn Pred) {
+ TreePattern *TP = Pred.getOrigPatFragRecord();
+ unsigned &Entry = NodePredicateMap[TP];
if (Entry == 0) {
- NodePredicates.push_back(PredName.str());
- Entry = NodePredicates.size();
+ TinyPtrVector<TreePattern *> &SameCodePreds =
+ NodePredicatesByCodeToRun[Pred.getCodeToRunOnSDNode()];
+ if (SameCodePreds.empty()) {
+ // We've never seen a predicate with the same code: allocate an entry.
+ NodePredicates.push_back(Pred);
+ Entry = NodePredicates.size();
+ } else {
+ // We did see an identical predicate: re-use it.
+ Entry = NodePredicateMap[SameCodePreds.front()];
+ assert(Entry != 0);
+ }
+ // In both cases, we've never seen this particular predicate before, so
+ // mark it in the list of predicates sharing the same code.
+ SameCodePreds.push_back(TP);
}
return Entry-1;
}
+
unsigned getPatternPredicate(StringRef PredName) {
unsigned &Entry = PatternPredicateMap[PredName];
if (Entry == 0) {
}
return Entry-1;
}
-
unsigned getComplexPat(const ComplexPattern &P) {
unsigned &Entry = ComplexPatternMap[&P];
if (Entry == 0) {
}
return Entry-1;
}
-
+
unsigned getNodeXFormID(Record *Rec) {
unsigned &Entry = NodeXFormMap[Rec];
if (Entry == 0) {
}
return Entry-1;
}
-
+
};
} // end anonymous namespace.
static unsigned GetVBRSize(unsigned Val) {
if (Val <= 127) return 1;
-
+
unsigned NumBytes = 0;
while (Val >= 128) {
Val >>= 7;
OS << Val << ", ";
return 1;
}
-
+
uint64_t InVal = Val;
unsigned NumBytes = 0;
while (Val >= 128) {
return NumBytes+1;
}
-/// EmitMatcherOpcodes - Emit bytes for the specified matcher and return
+/// EmitMatcher - Emit bytes for the specified matcher and return
/// the number of bytes emitted.
unsigned MatcherTableEmitter::
EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
formatted_raw_ostream &OS) {
OS.PadToColumn(Indent*2);
-
+
switch (N->getKind()) {
case Matcher::Scope: {
const ScopeMatcher *SM = cast<ScopeMatcher>(N);
- assert(SM->getNext() == 0 && "Shouldn't have next after scope");
-
+ assert(SM->getNext() == nullptr && "Shouldn't have next after scope");
+
unsigned StartIdx = CurrentIdx;
-
+
// Emit all of the children.
for (unsigned i = 0, e = SM->getNumChildren(); i != e; ++i) {
if (i == 0) {
unsigned VBRSize = 0;
do {
VBRSize = GetVBRSize(ChildSize);
-
+
TmpBuf.clear();
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
ChildSize = EmitMatcherList(SM->getChild(i), Indent+1,
CurrentIdx+VBRSize, FOS);
} while (GetVBRSize(ChildSize) != VBRSize);
-
+
assert(ChildSize != 0 && "Should not have a zero-sized child!");
-
+
CurrentIdx += EmitVBRValue(ChildSize, OS);
if (!OmitComments) {
OS << "/*->" << CurrentIdx+ChildSize << "*/";
-
+
if (i == 0)
OS.PadToColumn(CommentIndent) << "// " << SM->getNumChildren()
<< " children in Scope";
}
-
- OS << '\n' << TmpBuf.str();
+
+ OS << '\n' << TmpBuf;
CurrentIdx += ChildSize;
}
-
+
// Emit a zero as a sentinel indicating end of 'Scope'.
if (!OmitComments)
OS << "/*" << CurrentIdx << "*/";
OS << '\n';
return CurrentIdx - StartIdx + 1;
}
-
+
case Matcher::RecordNode:
OS << "OPC_RecordNode,";
if (!OmitComments)
<< cast<RecordChildMatcher>(N)->getWhatFor();
OS << '\n';
return 1;
-
+
case Matcher::RecordMemRef:
OS << "OPC_RecordMemRef,\n";
return 1;
-
- case Matcher::CaptureFlagInput:
- OS << "OPC_CaptureFlagInput,\n";
+
+ case Matcher::CaptureGlueInput:
+ OS << "OPC_CaptureGlueInput,\n";
return 1;
-
+
case Matcher::MoveChild:
OS << "OPC_MoveChild, " << cast<MoveChildMatcher>(N)->getChildNo() << ",\n";
return 2;
-
+
case Matcher::MoveParent:
OS << "OPC_MoveParent,\n";
return 1;
-
+
case Matcher::CheckSame:
OS << "OPC_CheckSame, "
<< cast<CheckSameMatcher>(N)->getMatchNumber() << ",\n";
return 2;
+ case Matcher::CheckChildSame:
+ OS << "OPC_CheckChild"
+ << cast<CheckChildSameMatcher>(N)->getChildNo() << "Same, "
+ << cast<CheckChildSameMatcher>(N)->getMatchNumber() << ",\n";
+ return 2;
+
case Matcher::CheckPatternPredicate: {
- StringRef Pred = cast<CheckPatternPredicateMatcher>(N)->getPredicate();
+ StringRef Pred =cast<CheckPatternPredicateMatcher>(N)->getPredicate();
OS << "OPC_CheckPatternPredicate, " << getPatternPredicate(Pred) << ',';
if (!OmitComments)
OS.PadToColumn(CommentIndent) << "// " << Pred;
return 2;
}
case Matcher::CheckPredicate: {
- StringRef Pred = cast<CheckPredicateMatcher>(N)->getPredicateName();
+ TreePredicateFn Pred = cast<CheckPredicateMatcher>(N)->getPredicate();
OS << "OPC_CheckPredicate, " << getNodePredicate(Pred) << ',';
if (!OmitComments)
- OS.PadToColumn(CommentIndent) << "// " << Pred;
+ OS.PadToColumn(CommentIndent) << "// " << Pred.getFnName();
OS << '\n';
return 2;
}
case Matcher::CheckOpcode:
- OS << "OPC_CheckOpcode, "
- << cast<CheckOpcodeMatcher>(N)->getOpcode().getEnumName() << ",\n";
- return 2;
-
+ OS << "OPC_CheckOpcode, TARGET_VAL("
+ << cast<CheckOpcodeMatcher>(N)->getOpcode().getEnumName() << "),\n";
+ return 3;
+
case Matcher::SwitchOpcode:
case Matcher::SwitchType: {
unsigned StartIdx = CurrentIdx;
-
+
unsigned NumCases;
if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N)) {
OS << "OPC_SwitchOpcode ";
OS << "/*" << NumCases << " cases */";
OS << ", ";
++CurrentIdx;
-
+
// For each case we emit the size, then the opcode, then the matcher.
for (unsigned i = 0, e = NumCases; i != e; ++i) {
const Matcher *Child;
- if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N))
+ unsigned IdxSize;
+ if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N)) {
Child = SOM->getCaseMatcher(i);
- else
+ IdxSize = 2; // size of opcode in table is 2 bytes.
+ } else {
Child = cast<SwitchTypeMatcher>(N)->getCaseMatcher(i);
-
+ IdxSize = 1; // size of type in table is 1 byte.
+ }
+
// We need to encode the opcode and the offset of the case code before
// emitting the case code. Handle this by buffering the output into a
// string while we get the size. Unfortunately, the offset of the
unsigned VBRSize = 0;
do {
VBRSize = GetVBRSize(ChildSize);
-
+
TmpBuf.clear();
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
- ChildSize = EmitMatcherList(Child, Indent+1, CurrentIdx+VBRSize+1, FOS);
+ ChildSize = EmitMatcherList(Child, Indent+1, CurrentIdx+VBRSize+IdxSize,
+ FOS);
} while (GetVBRSize(ChildSize) != VBRSize);
-
+
assert(ChildSize != 0 && "Should not have a zero-sized child!");
-
+
if (i != 0) {
+ if (!OmitComments)
+ OS << "/*" << CurrentIdx << "*/";
OS.PadToColumn(Indent*2);
if (!OmitComments)
- OS << (isa<SwitchOpcodeMatcher>(N) ?
- "/*SwitchOpcode*/ " : "/*SwitchType*/ ");
+ OS << (isa<SwitchOpcodeMatcher>(N) ?
+ "/*SwitchOpcode*/ " : "/*SwitchType*/ ");
}
-
+
// Emit the VBR.
CurrentIdx += EmitVBRValue(ChildSize, OS);
-
- OS << ' ';
+
if (const SwitchOpcodeMatcher *SOM = dyn_cast<SwitchOpcodeMatcher>(N))
- OS << SOM->getCaseOpcode(i).getEnumName();
+ OS << "TARGET_VAL(" << SOM->getCaseOpcode(i).getEnumName() << "),";
else
- OS << getEnumName(cast<SwitchTypeMatcher>(N)->getCaseType(i));
- OS << ',';
-
+ OS << getEnumName(cast<SwitchTypeMatcher>(N)->getCaseType(i)) << ',';
+
+ CurrentIdx += IdxSize;
+
if (!OmitComments)
- OS << "// ->" << CurrentIdx+ChildSize+1;
+ OS << "// ->" << CurrentIdx+ChildSize;
OS << '\n';
- ++CurrentIdx;
- OS << TmpBuf.str();
+ OS << TmpBuf;
CurrentIdx += ChildSize;
}
// Emit the final zero to terminate the switch.
+ if (!OmitComments)
+ OS << "/*" << CurrentIdx << "*/";
OS.PadToColumn(Indent*2) << "0, ";
if (!OmitComments)
OS << (isa<SwitchOpcodeMatcher>(N) ?
}
case Matcher::CheckType:
+ assert(cast<CheckTypeMatcher>(N)->getResNo() == 0 &&
+ "FIXME: Add support for CheckType of resno != 0");
OS << "OPC_CheckType, "
<< getEnumName(cast<CheckTypeMatcher>(N)->getType()) << ",\n";
return 2;
-
+
case Matcher::CheckChildType:
OS << "OPC_CheckChild"
<< cast<CheckChildTypeMatcher>(N)->getChildNo() << "Type, "
<< getEnumName(cast<CheckChildTypeMatcher>(N)->getType()) << ",\n";
return 2;
-
+
case Matcher::CheckInteger: {
OS << "OPC_CheckInteger, ";
unsigned Bytes=1+EmitVBRValue(cast<CheckIntegerMatcher>(N)->getValue(), OS);
OS << '\n';
return Bytes;
}
+ case Matcher::CheckChildInteger: {
+ OS << "OPC_CheckChild" << cast<CheckChildIntegerMatcher>(N)->getChildNo()
+ << "Integer, ";
+ unsigned Bytes=1+EmitVBRValue(cast<CheckChildIntegerMatcher>(N)->getValue(),
+ OS);
+ OS << '\n';
+ return Bytes;
+ }
case Matcher::CheckCondCode:
OS << "OPC_CheckCondCode, ISD::"
<< cast<CheckCondCodeMatcher>(N)->getCondCodeName() << ",\n";
return 2;
-
+
case Matcher::CheckValueType:
OS << "OPC_CheckValueType, MVT::"
<< cast<CheckValueTypeMatcher>(N)->getTypeName() << ",\n";
return 2;
case Matcher::CheckComplexPat: {
- const ComplexPattern &Pattern =
- cast<CheckComplexPatMatcher>(N)->getPattern();
- OS << "OPC_CheckComplexPat, " << getComplexPat(Pattern) << ',';
+ const CheckComplexPatMatcher *CCPM = cast<CheckComplexPatMatcher>(N);
+ const ComplexPattern &Pattern = CCPM->getPattern();
+ OS << "OPC_CheckComplexPat, /*CP*/" << getComplexPat(Pattern) << ", /*#*/"
+ << CCPM->getMatchNumber() << ',';
+
if (!OmitComments) {
OS.PadToColumn(CommentIndent) << "// " << Pattern.getSelectFunc();
- OS << ": " << Pattern.getNumOperands() << " operands";
+ OS << ":$" << CCPM->getName();
+ for (unsigned i = 0, e = Pattern.getNumOperands(); i != e; ++i)
+ OS << " #" << CCPM->getFirstResult()+i;
+
if (Pattern.hasProperty(SDNPHasChain))
- OS << " + chain result and input";
+ OS << " + chain result";
}
OS << '\n';
- return 2;
+ return 3;
}
-
+
case Matcher::CheckAndImm: {
OS << "OPC_CheckAndImm, ";
unsigned Bytes=1+EmitVBRValue(cast<CheckAndImmMatcher>(N)->getValue(), OS);
OS << '\n';
return Bytes;
}
-
+
case Matcher::CheckFoldableChainNode:
OS << "OPC_CheckFoldableChainNode,\n";
return 1;
-
+
case Matcher::EmitInteger: {
int64_t Val = cast<EmitIntegerMatcher>(N)->getValue();
OS << "OPC_EmitInteger, "
<< Val << ",\n";
return 3;
}
-
- case Matcher::EmitRegister:
- OS << "OPC_EmitRegister, "
- << getEnumName(cast<EmitRegisterMatcher>(N)->getVT()) << ", ";
- if (Record *R = cast<EmitRegisterMatcher>(N)->getReg())
- OS << getQualifiedName(R) << ",\n";
- else {
- OS << "0 ";
- if (!OmitComments)
- OS << "/*zero_reg*/";
- OS << ",\n";
+
+ case Matcher::EmitRegister: {
+ const EmitRegisterMatcher *Matcher = cast<EmitRegisterMatcher>(N);
+ const CodeGenRegister *Reg = Matcher->getReg();
+ // If the enum value of the register is larger than one byte can handle,
+ // use EmitRegister2.
+ if (Reg && Reg->EnumValue > 255) {
+ OS << "OPC_EmitRegister2, " << getEnumName(Matcher->getVT()) << ", ";
+ OS << "TARGET_VAL(" << getQualifiedName(Reg->TheDef) << "),\n";
+ return 4;
+ } else {
+ OS << "OPC_EmitRegister, " << getEnumName(Matcher->getVT()) << ", ";
+ if (Reg) {
+ OS << getQualifiedName(Reg->TheDef) << ",\n";
+ } else {
+ OS << "0 ";
+ if (!OmitComments)
+ OS << "/*zero_reg*/";
+ OS << ",\n";
+ }
+ return 3;
}
- return 3;
-
+ }
+
case Matcher::EmitConvertToTarget:
OS << "OPC_EmitConvertToTarget, "
<< cast<EmitConvertToTargetMatcher>(N)->getSlot() << ",\n";
return 2;
-
+
case Matcher::EmitMergeInputChains: {
const EmitMergeInputChainsMatcher *MN =
cast<EmitMergeInputChainsMatcher>(N);
+
+ // Handle the specialized forms OPC_EmitMergeInputChains1_0 and 1_1.
+ if (MN->getNumNodes() == 1 && MN->getNode(0) < 2) {
+ OS << "OPC_EmitMergeInputChains1_" << MN->getNode(0) << ",\n";
+ return 1;
+ }
+
OS << "OPC_EmitMergeInputChains, " << MN->getNumNodes() << ", ";
for (unsigned i = 0, e = MN->getNumNodes(); i != e; ++i)
OS << MN->getNode(i) << ", ";
OS <<'\n';
return 3;
}
-
+
case Matcher::EmitNode:
case Matcher::MorphNodeTo: {
const EmitNodeMatcherCommon *EN = cast<EmitNodeMatcherCommon>(N);
OS << (isa<EmitNodeMatcher>(EN) ? "OPC_EmitNode" : "OPC_MorphNodeTo");
- OS << ", TARGET_OPCODE(" << EN->getOpcodeName() << "), 0";
-
+ OS << ", TARGET_VAL(" << EN->getOpcodeName() << "), 0";
+
if (EN->hasChain()) OS << "|OPFL_Chain";
- if (EN->hasInFlag()) OS << "|OPFL_FlagInput";
- if (EN->hasOutFlag()) OS << "|OPFL_FlagOutput";
+ if (EN->hasInFlag()) OS << "|OPFL_GlueInput";
+ if (EN->hasOutFlag()) OS << "|OPFL_GlueOutput";
if (EN->hasMemRefs()) OS << "|OPFL_MemRefs";
if (EN->getNumFixedArityOperands() != -1)
OS << "|OPFL_Variadic" << EN->getNumFixedArityOperands();
OS << ",\n";
-
+
OS.PadToColumn(Indent*2+4) << EN->getNumVTs();
if (!OmitComments)
OS << "/*#VTs*/";
unsigned NumOperandBytes = 0;
for (unsigned i = 0, e = EN->getNumOperands(); i != e; ++i)
NumOperandBytes += EmitVBRValue(EN->getOperand(i), OS);
-
+
if (!OmitComments) {
// Print the result #'s for EmitNode.
if (const EmitNodeMatcher *E = dyn_cast<EmitNodeMatcher>(EN)) {
if (unsigned NumResults = EN->getNumVTs()) {
- OS.PadToColumn(CommentIndent) << "// Results = ";
+ OS.PadToColumn(CommentIndent) << "// Results =";
unsigned First = E->getFirstResultSlot();
for (unsigned i = 0; i != NumResults; ++i)
- OS << "#" << First+i << " ";
+ OS << " #" << First+i;
}
}
OS << '\n';
if (const MorphNodeToMatcher *SNT = dyn_cast<MorphNodeToMatcher>(N)) {
OS.PadToColumn(Indent*2) << "// Src: "
- << *SNT->getPattern().getSrcPattern() << '\n';
+ << *SNT->getPattern().getSrcPattern() << " - Complexity = "
+ << SNT->getPattern().getPatternComplexity(CGP) << '\n';
OS.PadToColumn(Indent*2) << "// Dst: "
<< *SNT->getPattern().getDstPattern() << '\n';
}
} else
OS << '\n';
-
+
return 6+EN->getNumVTs()+NumOperandBytes;
}
- case Matcher::MarkFlagResults: {
- const MarkFlagResultsMatcher *CFR = cast<MarkFlagResultsMatcher>(N);
- OS << "OPC_MarkFlagResults, " << CFR->getNumNodes() << ", ";
+ case Matcher::MarkGlueResults: {
+ const MarkGlueResultsMatcher *CFR = cast<MarkGlueResultsMatcher>(N);
+ OS << "OPC_MarkGlueResults, " << CFR->getNumNodes() << ", ";
unsigned NumOperandBytes = 0;
for (unsigned i = 0, e = CFR->getNumNodes(); i != e; ++i)
NumOperandBytes += EmitVBRValue(CFR->getNode(i), OS);
OS << '\n';
if (!OmitComments) {
OS.PadToColumn(Indent*2) << "// Src: "
- << *CM->getPattern().getSrcPattern() << '\n';
+ << *CM->getPattern().getSrcPattern() << " - Complexity = "
+ << CM->getPattern().getPatternComplexity(CGP) << '\n';
OS.PadToColumn(Indent*2) << "// Dst: "
<< *CM->getPattern().getDstPattern();
}
return 2 + NumResultBytes;
}
}
- assert(0 && "Unreachable");
- return 0;
+ llvm_unreachable("Unreachable");
}
/// EmitMatcherList - Emit the bytes for the specified matcher subtree.
formatted_raw_ostream &OS) {
unsigned Size = 0;
while (N) {
- if (unsigned(N->getKind()) >= Histogram.size())
- Histogram.resize(N->getKind()+1);
- Histogram[N->getKind()]++;
if (!OmitComments)
OS << "/*" << CurrentIdx << "*/";
unsigned MatcherSize = EmitMatcher(N, Indent, CurrentIdx, OS);
Size += MatcherSize;
CurrentIdx += MatcherSize;
-
+
// If there are other nodes in this list, iterate to them, otherwise we're
// done.
N = N->getNext();
return Size;
}
-void MatcherTableEmitter::EmitPredicateFunctions(const CodeGenDAGPatterns &CGP,
- formatted_raw_ostream &OS) {
+void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
// Emit pattern predicates.
if (!PatternPredicates.empty()) {
- OS << "bool CheckPatternPredicate(unsigned PredNo) const {\n";
+ OS << "bool CheckPatternPredicate(unsigned PredNo) const override {\n";
OS << " switch (PredNo) {\n";
- OS << " default: assert(0 && \"Invalid predicate in table?\");\n";
+ OS << " default: llvm_unreachable(\"Invalid predicate in table?\");\n";
for (unsigned i = 0, e = PatternPredicates.size(); i != e; ++i)
OS << " case " << i << ": return " << PatternPredicates[i] << ";\n";
OS << " }\n";
OS << "}\n\n";
}
-
+
// Emit Node predicates.
- // FIXME: Annoyingly, these are stored by name, which we never even emit. Yay?
- StringMap<TreePattern*> PFsByName;
-
- for (CodeGenDAGPatterns::pf_iterator I = CGP.pf_begin(), E = CGP.pf_end();
- I != E; ++I)
- PFsByName[I->first->getName()] = I->second;
-
if (!NodePredicates.empty()) {
- OS << "bool CheckNodePredicate(SDNode *Node, unsigned PredNo) const {\n";
+ OS << "bool CheckNodePredicate(SDNode *Node,\n";
+ OS << " unsigned PredNo) const override {\n";
OS << " switch (PredNo) {\n";
- OS << " default: assert(0 && \"Invalid predicate in table?\");\n";
+ OS << " default: llvm_unreachable(\"Invalid predicate in table?\");\n";
for (unsigned i = 0, e = NodePredicates.size(); i != e; ++i) {
- // FIXME: Storing this by name is horrible.
- TreePattern *P =PFsByName[NodePredicates[i].substr(strlen("Predicate_"))];
- assert(P && "Unknown name?");
-
// Emit the predicate code corresponding to this pattern.
- std::string Code = P->getRecord()->getValueAsCode("Predicate");
- assert(!Code.empty() && "No code in this predicate");
- OS << " case " << i << ": { // " << NodePredicates[i] << '\n';
- std::string ClassName;
- if (P->getOnlyTree()->isLeaf())
- ClassName = "SDNode";
- else
- ClassName =
- CGP.getSDNodeInfo(P->getOnlyTree()->getOperator()).getSDClassName();
- if (ClassName == "SDNode")
- OS << " SDNode *N = Node;\n";
- else
- OS << " " << ClassName << "*N = cast<" << ClassName << ">(Node);\n";
- OS << Code << "\n }\n";
+ TreePredicateFn PredFn = NodePredicates[i];
+
+ assert(!PredFn.isAlwaysTrue() && "No code in this predicate");
+ OS << " case " << i << ": { \n";
+ for (auto *SimilarPred :
+ NodePredicatesByCodeToRun[PredFn.getCodeToRunOnSDNode()])
+ OS << " // " << TreePredicateFn(SimilarPred).getFnName() <<'\n';
+
+ OS << PredFn.getCodeToRunOnSDNode() << "\n }\n";
}
OS << " }\n";
OS << "}\n\n";
}
-
+
// Emit CompletePattern matchers.
// FIXME: This should be const.
if (!ComplexPatterns.empty()) {
- OS << "bool CheckComplexPattern(SDNode *Root, SDValue N,\n";
- OS << " unsigned PatternNo, SmallVectorImpl<SDValue> &Result) {\n";
+ OS << "bool CheckComplexPattern(SDNode *Root, SDNode *Parent,\n";
+ OS << " SDValue N, unsigned PatternNo,\n";
+ OS << " SmallVectorImpl<std::pair<SDValue, SDNode*> > &Result) override {\n";
+ OS << " unsigned NextRes = Result.size();\n";
OS << " switch (PatternNo) {\n";
- OS << " default: assert(0 && \"Invalid pattern # in table?\");\n";
+ OS << " default: llvm_unreachable(\"Invalid pattern # in table?\");\n";
for (unsigned i = 0, e = ComplexPatterns.size(); i != e; ++i) {
const ComplexPattern &P = *ComplexPatterns[i];
unsigned NumOps = P.getNumOperands();
if (P.hasProperty(SDNPHasChain))
++NumOps; // Get the chained node too.
-
+
OS << " case " << i << ":\n";
- OS << " Result.resize(Result.size()+" << NumOps << ");\n";
+ OS << " Result.resize(NextRes+" << NumOps << ");\n";
OS << " return " << P.getSelectFunc();
- OS << "(Root, N";
+ OS << "(";
+ // If the complex pattern wants the root of the match, pass it in as the
+ // first argument.
+ if (P.hasProperty(SDNPWantRoot))
+ OS << "Root, ";
+
+ // If the complex pattern wants the parent of the operand being matched,
+ // pass it in as the next argument.
+ if (P.hasProperty(SDNPWantParent))
+ OS << "Parent, ";
+
+ OS << "N";
for (unsigned i = 0; i != NumOps; ++i)
- OS << ", Result[Result.size()-" << (NumOps-i) << ']';
+ OS << ", Result[NextRes+" << i << "].first";
OS << ");\n";
}
OS << " }\n";
OS << "}\n\n";
}
-
-
+
+
// Emit SDNodeXForm handlers.
// FIXME: This should be const.
if (!NodeXForms.empty()) {
- OS << "SDValue RunSDNodeXForm(SDValue V, unsigned XFormNo) {\n";
+ OS << "SDValue RunSDNodeXForm(SDValue V, unsigned XFormNo) override {\n";
OS << " switch (XFormNo) {\n";
- OS << " default: assert(0 && \"Invalid xform # in table?\");\n";
-
+ OS << " default: llvm_unreachable(\"Invalid xform # in table?\");\n";
+
// FIXME: The node xform could take SDValue's instead of SDNode*'s.
for (unsigned i = 0, e = NodeXForms.size(); i != e; ++i) {
const CodeGenDAGPatterns::NodeXForm &Entry =
CGP.getSDNodeTransform(NodeXForms[i]);
-
+
Record *SDNode = Entry.first;
const std::string &Code = Entry.second;
-
+
OS << " case " << i << ": { ";
if (!OmitComments)
OS << "// " << NodeXForms[i]->getName();
OS << '\n';
-
+
std::string ClassName = CGP.getSDNodeInfo(SDNode).getSDClassName();
if (ClassName == "SDNode")
OS << " SDNode *N = V.getNode();\n";
}
}
-void MatcherTableEmitter::EmitHistogram(formatted_raw_ostream &OS) {
+static void BuildHistogram(const Matcher *M, std::vector<unsigned> &OpcodeFreq){
+ for (; M != nullptr; M = M->getNext()) {
+ // Count this node.
+ if (unsigned(M->getKind()) >= OpcodeFreq.size())
+ OpcodeFreq.resize(M->getKind()+1);
+ OpcodeFreq[M->getKind()]++;
+
+ // Handle recursive nodes.
+ if (const ScopeMatcher *SM = dyn_cast<ScopeMatcher>(M)) {
+ for (unsigned i = 0, e = SM->getNumChildren(); i != e; ++i)
+ BuildHistogram(SM->getChild(i), OpcodeFreq);
+ } else if (const SwitchOpcodeMatcher *SOM =
+ dyn_cast<SwitchOpcodeMatcher>(M)) {
+ for (unsigned i = 0, e = SOM->getNumCases(); i != e; ++i)
+ BuildHistogram(SOM->getCaseMatcher(i), OpcodeFreq);
+ } else if (const SwitchTypeMatcher *STM = dyn_cast<SwitchTypeMatcher>(M)) {
+ for (unsigned i = 0, e = STM->getNumCases(); i != e; ++i)
+ BuildHistogram(STM->getCaseMatcher(i), OpcodeFreq);
+ }
+ }
+}
+
+void MatcherTableEmitter::EmitHistogram(const Matcher *M,
+ formatted_raw_ostream &OS) {
if (OmitComments)
return;
+
+ std::vector<unsigned> OpcodeFreq;
+ BuildHistogram(M, OpcodeFreq);
+
OS << " // Opcode Histogram:\n";
- for (unsigned i = 0, e = Histogram.size(); i != e; ++i) {
+ for (unsigned i = 0, e = OpcodeFreq.size(); i != e; ++i) {
OS << " // #";
switch ((Matcher::KindTy)i) {
- case Matcher::Scope: OS << "OPC_Scope"; break;
- case Matcher::RecordNode: OS << "OPC_RecordNode"; break;
+ case Matcher::Scope: OS << "OPC_Scope"; break;
+ case Matcher::RecordNode: OS << "OPC_RecordNode"; break;
case Matcher::RecordChild: OS << "OPC_RecordChild"; break;
case Matcher::RecordMemRef: OS << "OPC_RecordMemRef"; break;
- case Matcher::CaptureFlagInput: OS << "OPC_CaptureFlagInput"; break;
+ case Matcher::CaptureGlueInput: OS << "OPC_CaptureGlueInput"; break;
case Matcher::MoveChild: OS << "OPC_MoveChild"; break;
case Matcher::MoveParent: OS << "OPC_MoveParent"; break;
case Matcher::CheckSame: OS << "OPC_CheckSame"; break;
+ case Matcher::CheckChildSame: OS << "OPC_CheckChildSame"; break;
case Matcher::CheckPatternPredicate:
OS << "OPC_CheckPatternPredicate"; break;
case Matcher::CheckPredicate: OS << "OPC_CheckPredicate"; break;
case Matcher::SwitchType: OS << "OPC_SwitchType"; break;
case Matcher::CheckChildType: OS << "OPC_CheckChildType"; break;
case Matcher::CheckInteger: OS << "OPC_CheckInteger"; break;
+ case Matcher::CheckChildInteger: OS << "OPC_CheckChildInteger"; break;
case Matcher::CheckCondCode: OS << "OPC_CheckCondCode"; break;
case Matcher::CheckValueType: OS << "OPC_CheckValueType"; break;
case Matcher::CheckComplexPat: OS << "OPC_CheckComplexPat"; break;
case Matcher::EmitNode: OS << "OPC_EmitNode"; break;
case Matcher::MorphNodeTo: OS << "OPC_MorphNodeTo"; break;
case Matcher::EmitNodeXForm: OS << "OPC_EmitNodeXForm"; break;
- case Matcher::MarkFlagResults: OS << "OPC_MarkFlagResults"; break;
- case Matcher::CompleteMatch: OS << "OPC_CompleteMatch"; break;
+ case Matcher::MarkGlueResults: OS << "OPC_MarkGlueResults"; break;
+ case Matcher::CompleteMatch: OS << "OPC_CompleteMatch"; break;
}
-
- OS.PadToColumn(40) << " = " << Histogram[i] << '\n';
+
+ OS.PadToColumn(40) << " = " << OpcodeFreq[i] << '\n';
}
OS << '\n';
}
void llvm::EmitMatcherTable(const Matcher *TheMatcher,
- const CodeGenDAGPatterns &CGP, raw_ostream &O) {
+ const CodeGenDAGPatterns &CGP,
+ raw_ostream &O) {
formatted_raw_ostream OS(O);
-
+
OS << "// The main instruction selector code.\n";
OS << "SDNode *SelectCode(SDNode *N) {\n";
- MatcherTableEmitter MatcherEmitter;
+ MatcherTableEmitter MatcherEmitter(CGP);
- OS << " // Opcodes are emitted as 2 bytes, TARGET_OPCODE handles this.\n";
- OS << " #define TARGET_OPCODE(X) X & 255, unsigned(X) >> 8\n";
+ OS << " // Some target values are emitted as 2 bytes, TARGET_VAL handles\n";
+ OS << " // this.\n";
+ OS << " #define TARGET_VAL(X) X & 255, unsigned(X) >> 8\n";
OS << " static const unsigned char MatcherTable[] = {\n";
- unsigned TotalSize = MatcherEmitter.EmitMatcherList(TheMatcher, 5, 0, OS);
+ unsigned TotalSize = MatcherEmitter.EmitMatcherList(TheMatcher, 6, 0, OS);
OS << " 0\n }; // Total Array size is " << (TotalSize+1) << " bytes\n\n";
-
- MatcherEmitter.EmitHistogram(OS);
-
- OS << " #undef TARGET_OPCODE\n";
+
+ MatcherEmitter.EmitHistogram(TheMatcher, OS);
+
+ OS << " #undef TARGET_VAL\n";
OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n";
OS << '\n';
-
+
// Next up, emit the function for node and pattern predicates:
- MatcherEmitter.EmitPredicateFunctions(CGP, OS);
+ MatcherEmitter.EmitPredicateFunctions(OS);
}
projects / oota-llvm.git / blobdiff