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generate better code in CheckComplexPattern

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105970 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-06-14 22:33:34 +00:00
parent d3c4284849
commit f6c4a30984
1 changed files with 3 additions and 2 deletions
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5
utils/TableGen/DAGISelMatcherEmitter.cpp
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@ -635,6 +635,7 @@ void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
if (!ComplexPatterns.empty()) {
OS << "bool CheckComplexPattern(SDNode *Root, SDValue N,\n";
OS << " unsigned PatternNo, SmallVectorImpl<SDValue> &Result) {\n";
OS << " unsigned NextRes = Result.size();\n";
OS << " switch (PatternNo) {\n";
OS << " default: assert(0 && \"Invalid pattern # in table?\");\n";
for (unsigned i = 0, e = ComplexPatterns.size(); i != e; ++i) {
@ -645,12 +646,12 @@ void MatcherTableEmitter::EmitPredicateFunctions(formatted_raw_ostream &OS) {
++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";
for (unsigned i = 0; i != NumOps; ++i)
OS << ", Result[Result.size()-" << (NumOps-i) << ']';
OS << ", Result[NextRes+" << i << ']';
OS << ");\n";
}
OS << " }\n";