Add SIMD.Float32x4 functions.

src/types.cc

Index: src/types.cc
diff --git a/src/types.cc b/src/types.cc
index 1c6b84e2dc67da07ce3c809810b163bf306e2ca1..6228237f8c5bd74f4337ede3571e9daf3b5c79a7 100644
--- a/src/types.cc
+++ b/src/types.cc
@@ -228,6 +228,9 @@ TypeImpl<Config>::BitsetType::Lub(i::Map* map) {
     }
     case HEAP_NUMBER_TYPE:
       return kNumber & kTaggedPointer;
+    // TODO(bbudge): Add type bits for SIMD value types.
+    case FLOAT32X4_TYPE:
+      return kAny;
     case JS_VALUE_TYPE:
     case JS_DATE_TYPE:
     case JS_OBJECT_TYPE:
@@ -293,6 +296,7 @@ TypeImpl<Config>::BitsetType::Lub(i::Object* value) {
     return Lub(value->Number()) &
         (value->IsSmi() ? kTaggedSigned : kTaggedPointer);
   }
+  if (value->IsFloat32x4()) return kAny;
   return Lub(i::HeapObject::cast(value)->map());
 }