Add a kSimd128 machine type for Turbofan.

src/types.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_TYPES_H_
 #define V8_TYPES_H_
 
 #include "src/conversions.h"
 #include "src/handles.h"
 #include "src/objects.h"
@@ skipping 133 matching lines @@
 // respective map. Only structured types require allocation.
 // Note that the bitset representation is closed under both Union and Intersect.
 
 
 // -----------------------------------------------------------------------------
 // Values for bitset types
 
 // clang-format off
 
 #define MASK_BITSET_TYPE_LIST(V) \
-  V(Representation, 0xff800000u) \
-  V(Semantic,       0x007ffffeu)
+  V(Representation, 0xffc00000u) \
+  V(Semantic,       0x003ffffeu)
 
 #define REPRESENTATION(k) ((k) & BitsetType::kRepresentation)
 #define SEMANTIC(k)       ((k) & BitsetType::kSemantic)
 
 #define REPRESENTATION_BITSET_TYPE_LIST(V)    \
   V(None,               0)                    \
-  V(UntaggedBit,        1u << 23 | kSemantic) \
-  V(UntaggedIntegral8,  1u << 24 | kSemantic) \
-  V(UntaggedIntegral16, 1u << 25 | kSemantic) \
-  V(UntaggedIntegral32, 1u << 26 | kSemantic) \
-  V(UntaggedFloat32,    1u << 27 | kSemantic) \
-  V(UntaggedFloat64,    1u << 28 | kSemantic) \
+  V(UntaggedBit,        1u << 22 | kSemantic) \
+  V(UntaggedIntegral8,  1u << 23 | kSemantic) \
+  V(UntaggedIntegral16, 1u << 24 | kSemantic) \
+  V(UntaggedIntegral32, 1u << 25 | kSemantic) \
+  V(UntaggedFloat32,    1u << 26 | kSemantic) \
+  V(UntaggedFloat64,    1u << 27 | kSemantic) \
+  V(UntaggedSimd128,    1u << 28 | kSemantic) \
   V(UntaggedPointer,    1u << 29 | kSemantic) \
   V(TaggedSigned,       1u << 30 | kSemantic) \
   V(TaggedPointer,      1u << 31 | kSemantic) \
   \
   V(UntaggedIntegral,   kUntaggedBit | kUntaggedIntegral8 |        \
                         kUntaggedIntegral16 | kUntaggedIntegral32) \
   V(UntaggedFloat,      kUntaggedFloat32 | kUntaggedFloat64)       \
   V(UntaggedNumber,     kUntaggedIntegral | kUntaggedFloat)        \
   V(Untagged,           kUntaggedNumber | kUntaggedPointer)        \
   V(Tagged,             kTaggedSigned | kTaggedPointer)
@@ skipping 783 matching lines @@
 
   bool Narrows(Bounds that) {
     return that.lower->Is(this->lower) && this->upper->Is(that.upper);
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TYPES_H_