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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.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192026 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper
2013-10-05 05:38:16 +00:00
parent e8bcb9dd99
commit 936910d929
6 changed files with 75 additions and 1 deletions
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2
include/llvm/CodeGen/SelectionDAGISel.h
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@@ -113,6 +113,8 @@ public:
OPC_MoveChild,
OPC_MoveParent,
OPC_CheckSame,
OPC_CheckChild0Same, OPC_CheckChild1Same,
OPC_CheckChild2Same, OPC_CheckChild3Same,
OPC_CheckPatternPredicate,
OPC_CheckPredicate,
OPC_CheckOpcode,