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| author | Craig Topper <craig.topper@gmail.com> | 2013-10-05 05:38:16 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2013-10-05 05:38:16 +0000 |
| commit | a1bbc323fadc0088bf18a6d3fdafa415b711aade (patch) | |
| tree | 377af184270da549b2877ca2fc29d84f9f5197dd /llvm/utils/TableGen/DAGISelMatcherOpt.cpp | |
| parent | aff49df0fe04cdbdfef58c22acafead573acf059 (diff) | |
| download | bcm5719-llvm-a1bbc323fadc0088bf18a6d3fdafa415b711aade.tar.gz bcm5719-llvm-a1bbc323fadc0088bf18a6d3fdafa415b711aade.zip | |
Add OPC_CheckChildSame0-3 to the DAG isel matcher. This replaces sequences of MoveChild, CheckSame, MoveParent. Saves 846 bytes from the X86 DAG isel matcher, ~300 from ARM, ~840 from Hexagon.
llvm-svn: 192026
Diffstat (limited to 'llvm/utils/TableGen/DAGISelMatcherOpt.cpp')
| -rw-r--r-- | llvm/utils/TableGen/DAGISelMatcherOpt.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/utils/TableGen/DAGISelMatcherOpt.cpp b/llvm/utils/TableGen/DAGISelMatcherOpt.cpp index f9964223c24..82e5d63be58 100644 --- a/llvm/utils/TableGen/DAGISelMatcherOpt.cpp +++ b/llvm/utils/TableGen/DAGISelMatcherOpt.cpp @@ -51,7 +51,11 @@ static void ContractNodes(OwningPtr<Matcher> &MatcherPtr, if (MC->getChildNo() < 8 && // Only have CheckChildType0...7 CT->getResNo() == 0) // CheckChildType checks res #0 New = new CheckChildTypeMatcher(MC->getChildNo(), CT->getType()); - + + if (CheckSameMatcher *CS = dyn_cast<CheckSameMatcher>(MC->getNext())) + if (MC->getChildNo() < 4) // Only have CheckChildSame0...3 + New = new CheckChildSameMatcher(MC->getChildNo(), CS->getMatchNumber()); + if (New) { // Insert the new node. New->setNext(MatcherPtr.take()); |
