[WASM] Eliminate SIMD boolean vector types.

src/compiler/instruction.cc

Index: src/compiler/instruction.cc
diff --git a/src/compiler/instruction.cc b/src/compiler/instruction.cc
index c841518ac68d7d57f8e51e41ece7fd6000972427..8fa0f281a53c71550516ab22f7b922a8679b7272 100644
--- a/src/compiler/instruction.cc
+++ b/src/compiler/instruction.cc
@@ -209,15 +209,6 @@ std::ostream& operator<<(std::ostream& os,
         case MachineRepresentation::kSimd128:
           os << "|s128";
           break;
-        case MachineRepresentation::kSimd1x4:
-          os << "|s1x4";
-          break;
-        case MachineRepresentation::kSimd1x8:
-          os << "|s1x8";
-          break;
-        case MachineRepresentation::kSimd1x16:
-          os << "|s1x16";
-          break;
         case MachineRepresentation::kTaggedSigned:
           os << "|ts";
           break;
@@ -889,15 +880,12 @@ static MachineRepresentation FilterRepresentation(MachineRepresentation rep) {
       return InstructionSequence::DefaultRepresentation();
     case MachineRepresentation::kWord32:
     case MachineRepresentation::kWord64:
-    case MachineRepresentation::kFloat32:
-    case MachineRepresentation::kFloat64:
-    case MachineRepresentation::kSimd128:
-    case MachineRepresentation::kSimd1x4:
-    case MachineRepresentation::kSimd1x8:
-    case MachineRepresentation::kSimd1x16:
     case MachineRepresentation::kTaggedSigned:
     case MachineRepresentation::kTaggedPointer:
     case MachineRepresentation::kTagged:
+    case MachineRepresentation::kFloat32:
+    case MachineRepresentation::kFloat64:
+    case MachineRepresentation::kSimd128:
       return rep;
     case MachineRepresentation::kNone:
       break;