[wasm] Add native x64 implementations for I32x4Splat, I32x4ExtractLane

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index 86b8c10ff238095b7b66c00d16c11ebb77c9c03e..0bcbe24dddf0c902b6428b6a21791477d81900e3 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -1303,6 +1303,10 @@ void InstructionSelector::VisitNode(Node* node) {
     case IrOpcode::kUnsafePointerAdd:
       MarkAsRepresentation(MachineType::PointerRepresentation(), node);
       return VisitUnsafePointerAdd(node);
+    case IrOpcode::kCreateInt32x4:
+      return MarkAsSimd128(node), VisitCreateInt32x4(node);
+    case IrOpcode::kInt32x4ExtractLane:
+      return MarkAsWord32(node), VisitInt32x4ExtractLane(node);
     default:
       V8_Fatal(__FILE__, __LINE__, "Unexpected operator #%d:%s @ node #%d",
                node->opcode(), node->op()->mnemonic(), node->id());
@@ -1643,7 +1647,6 @@ void InstructionSelector::VisitBitcastFloat64ToInt64(Node* node) {
 void InstructionSelector::VisitBitcastInt64ToFloat64(Node* node) {
   UNIMPLEMENTED();
 }
-
 #endif  // V8_TARGET_ARCH_32_BIT
 
 // 64 bit targets do not implement the following instructions.
@@ -1661,6 +1664,14 @@ void InstructionSelector::VisitWord32PairShr(Node* node) { UNIMPLEMENTED(); }
 void InstructionSelector::VisitWord32PairSar(Node* node) { UNIMPLEMENTED(); }
 #endif  // V8_TARGET_ARCH_64_BIT
 
+#if !V8_TARGET_ARCH_X64
+void InstructionSelector::VisitCreateInt32x4(Node* node) { UNIMPLEMENTED(); }
+
+void InstructionSelector::VisitInt32x4ExtractLane(Node* node) {
+  UNIMPLEMENTED();
+}
+#endif  // !V8_TARGET_ARCH_X64
+
 void InstructionSelector::VisitFinishRegion(Node* node) { EmitIdentity(node); }
 
 void InstructionSelector::VisitParameter(Node* node) {