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emit table indexes before each row so that it is debuggable. 

llvm-svn: 96730
This commit is contained in:
Chris Lattner 2010-02-21 07:16:41 +00:00
parent f50ef6ed9a
commit 816f638f6b
1 changed files with 11 additions and 7 deletions
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18
llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
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@ -82,7 +82,7 @@ public:
MatcherTableEmitter() {}
unsigned EmitMatcherList(const MatcherNode *N, unsigned Indent,
formatted_raw_ostream &OS);
unsigned StartIdx, formatted_raw_ostream &OS);
void EmitPredicateFunctions(formatted_raw_ostream &OS);
private:
@ -324,7 +324,7 @@ EmitMatcher(const MatcherNode *N, unsigned Indent, formatted_raw_ostream &OS) {
/// EmitMatcherList - Emit the bytes for the specified matcher subtree.
unsigned MatcherTableEmitter::
EmitMatcherList(const MatcherNode *N, unsigned Indent,
EmitMatcherList(const MatcherNode *N, unsigned Indent, unsigned CurrentIdx,
formatted_raw_ostream &OS) {
unsigned Size = 0;
while (N) {
@ -339,7 +339,7 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent,
raw_svector_ostream OS(TmpBuf);
formatted_raw_ostream FOS(OS);
NextSize = EmitMatcherList(cast<PushMatcherNode>(N)->getNext(),
Indent+1, FOS);
Indent+1, CurrentIdx+2, FOS);
}
if (NextSize > 255) {
@ -348,17 +348,21 @@ EmitMatcherList(const MatcherNode *N, unsigned Indent,
// FIXME: exit(1);
}
OS << "/*" << CurrentIdx << "*/";
OS.PadToColumn(Indent*2);
OS << "OPC_Push, " << NextSize << ",\n";
OS << TmpBuf.str();
Size += 2 + NextSize;
Size += 2+NextSize;
CurrentIdx += 2+NextSize;
N = PMN->getFailure();
continue;
}
Size += EmitMatcher(N, Indent, OS);
OS << "/*" << CurrentIdx << "*/";
unsigned MatcherSize = EmitMatcher(N, Indent, OS);
Size += MatcherSize;
CurrentIdx += MatcherSize;
// If there are other nodes in this list, iterate to them, otherwise we're
// done.
@ -444,7 +448,7 @@ void llvm::EmitMatcherTable(const MatcherNode *Matcher, raw_ostream &O) {
OS << " // Opcodes are emitted as 2 bytes, TARGET_OPCODE handles this.\n";
OS << " #define TARGET_OPCODE(X) X & 255, unsigned(X) >> 8\n";
OS << " static const unsigned char MatcherTable[] = {\n";
unsigned TotalSize = MatcherEmitter.EmitMatcherList(Matcher, 2, OS);
unsigned TotalSize = MatcherEmitter.EmitMatcherList(Matcher, 5, 0, OS);
OS << " 0\n }; // Total Array size is " << (TotalSize+1) << " bytes\n\n";
OS << " #undef TARGET_OPCODE\n";
OS << " return SelectCodeCommon(N, MatcherTable,sizeof(MatcherTable));\n}\n";