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| author | Craig Topper <craig.topper@gmail.com> | 2013-10-04 05:22:20 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2013-10-04 05:22:20 +0000 |
| commit | d3562956789dbd0571a7e46052bee64b153fa7c4 (patch) | |
| tree | 43a5ff44e6bf0896492c876dfe81fa862efd7466 /utils/TableGen/DAGISelMatcherOpt.cpp | |
| parent | c32f2332b065d0fb8de4db8b8ca0981564dae92b (diff) | |
| download | external_llvm-d3562956789dbd0571a7e46052bee64b153fa7c4.tar.gz external_llvm-d3562956789dbd0571a7e46052bee64b153fa7c4.tar.bz2 external_llvm-d3562956789dbd0571a7e46052bee64b153fa7c4.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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191940 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen/DAGISelMatcherOpt.cpp')
| -rw-r--r-- | utils/TableGen/DAGISelMatcherOpt.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/utils/TableGen/DAGISelMatcherOpt.cpp b/utils/TableGen/DAGISelMatcherOpt.cpp index f9964223c2..82e5d63be5 100644 --- a/utils/TableGen/DAGISelMatcherOpt.cpp +++ b/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()); |