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rename PushMatcherNode -> ScopeMatcherNode to more accurately

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reflect what it does.  Switch the sense of the Next and the Check
arms to be more logical.  No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97093 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-25 01:56:48 +00:00
parent 3ce2b09797
commit 60df53e30a
6 changed files with 40 additions and 41 deletions
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6
include/llvm/CodeGen/DAGISelHeader.h
View File

@ -219,7 +219,7 @@ GetVBR(unsigned Val, const unsigned char *MatcherTable, unsigned &Idx) {
enum BuiltinOpcodes {
OPC_Push, OPC_Push2,
OPC_Scope, OPC_Scope2,
OPC_RecordNode,
OPC_RecordChild0, OPC_RecordChild1, OPC_RecordChild2, OPC_RecordChild3,
OPC_RecordChild4, OPC_RecordChild5, OPC_RecordChild6, OPC_RecordChild7,
@ -372,7 +372,7 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
assert(MatcherIndex < TableSize && "Invalid index");
BuiltinOpcodes Opcode = (BuiltinOpcodes)MatcherTable[MatcherIndex++];
switch (Opcode) {
case OPC_Push: {
case OPC_Scope: {
unsigned NumToSkip = MatcherTable[MatcherIndex++];
MatchScope NewEntry;
NewEntry.FailIndex = MatcherIndex+NumToSkip;
@ -386,7 +386,7 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
MatchScopes.push_back(NewEntry);
continue;
}
case OPC_Push2: {
case OPC_Scope2: {
unsigned NumToSkip = GetInt2(MatcherTable, MatcherIndex);
MatchScope NewEntry;
NewEntry.FailIndex = MatcherIndex+NumToSkip;

2
utils/TableGen/DAGISelEmitter.cpp
View File

@ -1972,7 +1972,7 @@ void DAGISelEmitter::run(raw_ostream &OS) {
if (Matcher == 0)
Matcher = N;
else
Matcher = new PushMatcherNode(N, Matcher);
Matcher = new ScopeMatcherNode(N, Matcher);
}
Matcher = OptimizeMatcher(Matcher);

8
utils/TableGen/DAGISelMatcher.cpp
View File

@ -24,10 +24,10 @@ void MatcherNode::printNext(raw_ostream &OS, unsigned indent) const {
}
void PushMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "Push\n";
printNext(OS, indent+2);
Failure->print(OS, indent);
void ScopeMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "Scope\n";
Check->print(OS, indent+2);
printNext(OS, indent);
}
void RecordMatcherNode::print(raw_ostream &OS, unsigned indent) const {

26
utils/TableGen/DAGISelMatcher.h
View File

@ -39,7 +39,7 @@ class MatcherNode {
public:
enum KindTy {
// Matcher state manipulation.
Push, // Push a checking scope.
Scope, // Push a checking scope.
RecordNode, // Record the current node.
RecordChild, // Record a child of the current node.
RecordMemRef, // Record the memref in the current node.
@ -100,24 +100,24 @@ protected:
void printNext(raw_ostream &OS, unsigned indent) const;
};
/// PushMatcherNode - This pushes a failure scope on the stack and evaluates
/// 'Next'. If 'Next' fails to match, it pops its scope and attempts to
/// match 'Failure'.
class PushMatcherNode : public MatcherNode {
OwningPtr<MatcherNode> Failure;
/// ScopeMatcherNode - This pushes a failure scope on the stack and evaluates
/// 'Check'. If 'Check' fails to match, it pops its scope and continues on to
/// 'Next'.
class ScopeMatcherNode : public MatcherNode {
OwningPtr<MatcherNode> Check;
public:
PushMatcherNode(MatcherNode *next = 0, MatcherNode *failure = 0)
: MatcherNode(Push), Failure(failure) {
ScopeMatcherNode(MatcherNode *check = 0, MatcherNode *next = 0)
: MatcherNode(Scope), Check(check) {
setNext(next);
}
MatcherNode *getFailure() { return Failure.get(); }
const MatcherNode *getFailure() const { return Failure.get(); }
void setFailure(MatcherNode *N) { Failure.reset(N); }
OwningPtr<MatcherNode> &getFailurePtr() { return Failure; }
MatcherNode *getCheck() { return Check.get(); }
const MatcherNode *getCheck() const { return Check.get(); }
void setCheck(MatcherNode *N) { Check.reset(N); }
OwningPtr<MatcherNode> &getCheckPtr() { return Check; }
static inline bool classof(const MatcherNode *N) {
return N->getKind() == Push;
return N->getKind() == Scope;
}
virtual void print(raw_ostream &OS, unsigned indent = 0) const;

18
utils/TableGen/DAGISelMatcherEmitter.cpp
View File

@ -155,7 +155,7 @@ EmitMatcher(const MatcherNode *N, unsigned Indent, formatted_raw_ostream &OS) {
OS.PadToColumn(Indent*2);
switch (N->getKind()) {
case MatcherNode::Push: assert(0 && "Should be handled by caller");
case MatcherNode::Scope: assert(0 && "Should be handled by caller");
case MatcherNode::RecordNode:
OS << "OPC_RecordNode,";
OS.PadToColumn(CommentIndent) << "// "
@ -388,8 +388,8 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent, unsigned CurrentIdx,
Histogram.resize(N->getKind()+1);
Histogram[N->getKind()]++;
// Push is a special case since it is binary.
if (const PushMatcherNode *PMN = dyn_cast<PushMatcherNode>(N)) {
// Scope is a special case since it is binary.
if (const ScopeMatcherNode *SMN = dyn_cast<ScopeMatcherNode>(N)) {
// We need to encode the child and the offset of the failure code before
// emitting either of them. Handle this by buffering the output into a
// string while we get the size.
@ -398,7 +398,7 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent, unsigned CurrentIdx,
{
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
NextSize = EmitMatcherList(cast<PushMatcherNode>(N)->getNext(),
NextSize = EmitMatcherList(cast<ScopeMatcherNode>(N)->getCheck(),
Indent+1, CurrentIdx+2, FOS);
}
@ -408,7 +408,7 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent, unsigned CurrentIdx,
TmpBuf.clear();
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
NextSize = EmitMatcherList(cast<PushMatcherNode>(N)->getNext(),
NextSize = EmitMatcherList(cast<ScopeMatcherNode>(N)->getCheck(),
Indent+1, CurrentIdx+3, FOS);
if (NextSize > 65535) {
errs() <<
@ -421,14 +421,14 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent, unsigned CurrentIdx,
OS.PadToColumn(Indent*2);
if (NextSize < 256)
OS << "OPC_Push, " << NextSize << ",\n";
OS << "OPC_Scope, " << NextSize << ",\n";
else
OS << "OPC_Push2, " << (NextSize&255) << ", " << (NextSize>>8) << ",\n";
OS << "OPC_Scope2, " << (NextSize&255) << ", " << (NextSize>>8) <<",\n";
OS << TmpBuf.str();
Size += 2+NextSize;
CurrentIdx += 2+NextSize;
N = PMN->getFailure();
N = SMN->getNext();
continue;
}
@ -514,7 +514,7 @@ void MatcherTableEmitter::EmitHistogram(formatted_raw_ostream &OS) {
for (unsigned i = 0, e = Histogram.size(); i != e; ++i) {
OS << " // #";
switch ((MatcherNode::KindTy)i) {
case MatcherNode::Push: OS << "OPC_Push"; break;
case MatcherNode::Scope: OS << "OPC_Scope"; break;
case MatcherNode::RecordNode: OS << "OPC_RecordNode"; break;
case MatcherNode::RecordChild: OS << "OPC_RecordChild"; break;
case MatcherNode::RecordMemRef: OS << "OPC_RecordMemRef"; break;

21
utils/TableGen/DAGISelMatcherOpt.cpp
View File

@ -14,14 +14,14 @@
#include "DAGISelMatcher.h"
using namespace llvm;
static void ContractNodes(OwningPtr<MatcherNode> &Matcher) {
static void ContractNodes(OwningPtr<MatcherNode> &MatcherPtr) {
// If we reached the end of the chain, we're done.
MatcherNode *N = Matcher.get();
MatcherNode *N = MatcherPtr.get();
if (N == 0) return;
// If we have a push node, walk down both edges.
if (PushMatcherNode *Push = dyn_cast<PushMatcherNode>(N))
ContractNodes(Push->getFailurePtr());
// If we have a scope node, walk down both edges.
if (ScopeMatcherNode *Push = dyn_cast<ScopeMatcherNode>(N))
ContractNodes(Push->getCheckPtr());
// If we found a movechild node with a node that comes in a 'foochild' form,
// transform it.
@ -35,25 +35,24 @@ static void ContractNodes(OwningPtr<MatcherNode> &Matcher) {
if (New) {
// Insert the new node.
New->setNext(Matcher.take());
Matcher.reset(New);
New->setNext(MatcherPtr.take());
MatcherPtr.reset(New);
// Remove the old one.
MC->setNext(MC->getNext()->takeNext());
return ContractNodes(Matcher);
return ContractNodes(MatcherPtr);
}
}
if (MoveChildMatcherNode *MC = dyn_cast<MoveChildMatcherNode>(N))
if (MoveParentMatcherNode *MP =
dyn_cast<MoveParentMatcherNode>(MC->getNext())) {
Matcher.reset(MP->takeNext());
return ContractNodes(Matcher);
MatcherPtr.reset(MP->takeNext());
return ContractNodes(MatcherPtr);
}
ContractNodes(N->getNextPtr());
}
MatcherNode *llvm::OptimizeMatcher(MatcherNode *Matcher) {
OwningPtr<MatcherNode> MatcherPtr(Matcher);
ContractNodes(MatcherPtr);