commit 267bdb20940596b51bed0db991d7f2a19c161846
author Craig Topper <craig.topper@gmail.com> Mon Mar 07 07:29:12 2016 +0000
committer Craig Topper <craig.topper@gmail.com> Mon Mar 07 07:29:12 2016 +0000
tree 060755f74689add880aa8492be0c35ce7469b15e
parent 67a1830c6a67930d326e33f96bc20d041497505b

[CodeGen] Add space-optimized EmitMergeInputChains1_2 to the DAG isel matching tables. Shaves about 5100 bytes from the X86 matcher table. NFC

llvm-svn: 262815

llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 2666951..1a0c902 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3051,7 +3051,8 @@
     }
 
     case OPC_EmitMergeInputChains1_0:    // OPC_EmitMergeInputChains, 1, 0
-    case OPC_EmitMergeInputChains1_1: {  // OPC_EmitMergeInputChains, 1, 1
+    case OPC_EmitMergeInputChains1_1:    // OPC_EmitMergeInputChains, 1, 1
+    case OPC_EmitMergeInputChains1_2: {  // OPC_EmitMergeInputChains, 1, 2
       // These are space-optimized forms of OPC_EmitMergeInputChains.
       assert(!InputChain.getNode() &&
              "EmitMergeInputChains should be the first chain producing node");
@@ -3059,7 +3060,7 @@
              "Should only have one EmitMergeInputChains per match");
 
       // Read all of the chained nodes.
-      unsigned RecNo = Opcode == OPC_EmitMergeInputChains1_1;
+      unsigned RecNo = Opcode - OPC_EmitMergeInputChains1_0;
       assert(RecNo < RecordedNodes.size() && "Invalid EmitMergeInputChains");
       ChainNodesMatched.push_back(RecordedNodes[RecNo].first.getNode());