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
2026-04-21 23:17:16 +00:00 · 2013-10-04 05:22:20 +00:00
parent c32f2332b0
commit d356295678
6 changed files with 75 additions and 1 deletions
@@ -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,