[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
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());