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The new isel was not properly handling patterns that covered

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internal nodes with flag results.  Record these with a new 
OPC_MarkFlagResults opcode and use this to update the interior
nodes' flag results properly.  This fixes CodeGen/X86/i256-add.ll
with the new isel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97021 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-02-24 05:33:42 +00:00
parent 91ff7f75f5
commit 02f73585f7
5 changed files with 112 additions and 15 deletions
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9
utils/TableGen/DAGISelMatcherEmitter.cpp
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@@ -337,6 +337,15 @@ EmitMatcher(const MatcherNode *N, unsigned Indent, formatted_raw_ostream &OS) {
OS << '\n';
return 6+EN->getNumVTs()+NumOperandBytes;
}
case MatcherNode::MarkFlagResults: {
const MarkFlagResultsMatcherNode *CFR = cast<MarkFlagResultsMatcherNode>(N);
OS << "OPC_MarkFlagResults, " << CFR->getNumNodes() << ", ";
unsigned NumOperandBytes = 0;
for (unsigned i = 0, e = CFR->getNumNodes(); i != e; ++i)
NumOperandBytes += EmitVBRValue(CFR->getNode(i), OS);
OS << '\n';
return 2+NumOperandBytes;
}
case MatcherNode::CompleteMatch: {
const CompleteMatchMatcherNode *CM = cast<CompleteMatchMatcherNode>(N);
OS << "OPC_CompleteMatch, " << CM->getNumResults() << ", ";