[V8] Rename SIMD Create methods and add initialization operators.

src/compiler/x64/instruction-codes-x64.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_COMPILER_X64_INSTRUCTION_CODES_X64_H_
 #define V8_COMPILER_X64_INSTRUCTION_CODES_X64_H_
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 128 matching lines @@
   V(X64Lea32)                      \
   V(X64Lea)                        \
   V(X64Dec32)                      \
   V(X64Inc32)                      \
   V(X64Push)                       \
   V(X64Poke)                       \
   V(X64StackCheck)                 \
   V(X64Xchgb)                      \
   V(X64Xchgw)                      \
   V(X64Xchgl)                      \
-  V(X64Int32x4Create)              \
+  V(X64Int32x4Splat)               \
   V(X64Int32x4ExtractLane)         \
   V(X64Int32x4ReplaceLane)         \
   V(X64Int32x4Add)                 \
-  V(X64Int32x4Sub)
+  V(X64Int32x4Sub)                 \
+  V(X64Simd128Zero)
 
 // Addressing modes represent the "shape" of inputs to an instruction.
 // Many instructions support multiple addressing modes. Addressing modes
 // are encoded into the InstructionCode of the instruction and tell the
 // code generator after register allocation which assembler method to call.
 //
 // We use the following local notation for addressing modes:
 //
 // M = memory operand
 // R = base register
@@ skipping 21 matching lines @@
   V(M8I)  /* [      %r2*8 + K] */      \
   V(Root) /* [%root       + K] */
 
 enum X64MemoryProtection { kUnprotected = 0, kProtected = 1 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_X64_INSTRUCTION_CODES_X64_H_