[WASM] Simplify SIMD shuffle opcodes.

src/compiler/machine-operator.h

 // Copyright 2013 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_MACHINE_OPERATOR_H_
 #define V8_COMPILER_MACHINE_OPERATOR_H_
 
 #include "src/base/compiler-specific.h"
 #include "src/base/flags.h"
 #include "src/globals.h"
@@ skipping 559 matching lines @@
   const Operator* S128Load();
   const Operator* S128Store();
 
   const Operator* S128Zero();
   const Operator* S128And();
   const Operator* S128Or();
   const Operator* S128Xor();
   const Operator* S128Not();
   const Operator* S128Select();
 
-  const Operator* S32x4Shuffle(uint8_t shuffle[16]);
-  const Operator* S16x8Shuffle(uint8_t shuffle[16]);
   const Operator* S8x16Shuffle(uint8_t shuffle[16]);
 
   const Operator* S1x4AnyTrue();
   const Operator* S1x4AllTrue();
   const Operator* S1x8AnyTrue();
   const Operator* S1x8AllTrue();
   const Operator* S1x16AnyTrue();
   const Operator* S1x16AllTrue();
 
   // load [base + index]
@@ skipping 100 matching lines @@
 };
 
 
 DEFINE_OPERATORS_FOR_FLAGS(MachineOperatorBuilder::Flags)
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_MACHINE_OPERATOR_H_