[CodeGen] Add space-optimized EmitMergeInputChains1_2 to the DAG isel matching tables...

llvm-svn: 262815

diff --git a/llvm/include/llvm/CodeGen/SelectionDAGISel.h b/llvm/include/llvm/CodeGen/SelectionDAGISel.h
index a011e4c..5738662 100644 (file)
--- a/llvm/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAGISel.h
@@ -140,6 +140,7 @@ public:
     OPC_EmitMergeInputChains,
     OPC_EmitMergeInputChains1_0,
     OPC_EmitMergeInputChains1_1,
+    OPC_EmitMergeInputChains1_2,
     OPC_EmitCopyToReg,
     OPC_EmitNodeXForm,
     OPC_EmitNode,

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 2666951..1a0c902 100644 (file)
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3051,7 +3051,8 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
     }
 
     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 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
              "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());
 

diff --git a/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp b/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
index 26f53dc..4f944be 100644 (file)
--- a/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
+++ b/llvm/utils/TableGen/DAGISelMatcherEmitter.cpp
@@ -500,8 +500,8 @@ EmitMatcher(const Matcher *N, unsigned Indent, unsigned CurrentIdx,
     const EmitMergeInputChainsMatcher *MN =
       cast<EmitMergeInputChainsMatcher>(N);
 
-    // Handle the specialized forms OPC_EmitMergeInputChains1_0 and 1_1.
-    if (MN->getNumNodes() == 1 && MN->getNode(0) < 2) {
+    // Handle the specialized forms OPC_EmitMergeInputChains1_0, 1_1, and 1_2.
+    if (MN->getNumNodes() == 1 && MN->getNode(0) < 3) {
       OS << "OPC_EmitMergeInputChains1_" << MN->getNode(0) << ",\n";
       return 1;
     }