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

src/compiler/wasm-compiler.h

 // Copyright 2015 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_WASM_COMPILER_H_
 #define V8_COMPILER_WASM_COMPILER_H_
 
 #include <memory>
 
 // Clients of this interface shouldn't depend on lots of compiler internals.
@@ skipping 210 matching lines @@
   void set_effect_ptr(Node** effect) { this->effect_ = effect; }
 
   wasm::FunctionSig* GetFunctionSignature() { return sig_; }
 
   void Int64LoweringForTesting();
 
   void SimdScalarLoweringForTesting();
 
   void SetSourcePosition(Node* node, wasm::WasmCodePosition position);
 
-  Node* CreateS128Value(int32_t value);
+  Node* Simd128Zero();
+  Node* Simd1x4Zero();
+  Node* Simd1x8Zero();
+  Node* Simd1x16Zero();
 
   Node* SimdOp(wasm::WasmOpcode opcode, const NodeVector& inputs);
 
   Node* SimdLaneOp(wasm::WasmOpcode opcode, uint8_t lane,
                    const NodeVector& inputs);
 
   Node* SimdShiftOp(wasm::WasmOpcode opcode, uint8_t shift,
                     const NodeVector& inputs);
 
   Node* SimdSwizzleOp(wasm::WasmOpcode opcode, uint32_t swizzle,
@@ skipping 146 matching lines @@
   }
 
   int AddParameterNodes(Node** args, int pos, int param_count,
                         wasm::FunctionSig* sig);
 };
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_WASM_COMPILER_H_