Add a kSimd128 machine type for Turbofan.

src/compiler/ia32/instruction-selector-ia32.cc

Index: src/compiler/ia32/instruction-selector-ia32.cc
diff --git a/src/compiler/ia32/instruction-selector-ia32.cc b/src/compiler/ia32/instruction-selector-ia32.cc
index 922f9a13eaeb61e148169519f6828e3487bd097e..8e55a327c82b94a37ae777c88c66a157263092e8 100644
--- a/src/compiler/ia32/instruction-selector-ia32.cc
+++ b/src/compiler/ia32/instruction-selector-ia32.cc
@@ -190,7 +190,8 @@ void InstructionSelector::VisitLoad(Node* node) {
     case MachineRepresentation::kWord32:
       opcode = kIA32Movl;
       break;
-    case MachineRepresentation::kWord64:  // Fall through.
+    case MachineRepresentation::kWord64:   // Fall through.
+    case MachineRepresentation::kSimd128:  // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();
       return;
@@ -275,7 +276,8 @@ void InstructionSelector::VisitStore(Node* node) {
       case MachineRepresentation::kWord32:
         opcode = kIA32Movl;
         break;
-      case MachineRepresentation::kWord64:  // Fall through.
+      case MachineRepresentation::kWord64:   // Fall through.
+      case MachineRepresentation::kSimd128:  // Fall through.
       case MachineRepresentation::kNone:
         UNREACHABLE();
         return;
@@ -327,9 +329,10 @@ void InstructionSelector::VisitCheckedLoad(Node* node) {
     case MachineRepresentation::kFloat64:
       opcode = kCheckedLoadFloat64;
       break;
-    case MachineRepresentation::kBit:     // Fall through.
-    case MachineRepresentation::kTagged:  // Fall through.
-    case MachineRepresentation::kWord64:  // Fall through.
+    case MachineRepresentation::kBit:      // Fall through.
+    case MachineRepresentation::kTagged:   // Fall through.
+    case MachineRepresentation::kWord64:   // Fall through.
+    case MachineRepresentation::kSimd128:  // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();
       return;
@@ -373,9 +376,10 @@ void InstructionSelector::VisitCheckedStore(Node* node) {
     case MachineRepresentation::kFloat64:
       opcode = kCheckedStoreFloat64;
       break;
-    case MachineRepresentation::kBit:     // Fall through.
-    case MachineRepresentation::kTagged:  // Fall through.
-    case MachineRepresentation::kWord64:  // Fall through.
+    case MachineRepresentation::kBit:      // Fall through.
+    case MachineRepresentation::kTagged:   // Fall through.
+    case MachineRepresentation::kWord64:   // Fall through.
+    case MachineRepresentation::kSimd128:  // Fall through.
     case MachineRepresentation::kNone:
       UNREACHABLE();
       return;