[wasm] Introduce the TrapIf and TrapUnless operators to generate trap code.

src/compiler/opcodes.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_OPCODES_H_
 #define V8_COMPILER_OPCODES_H_
 
 #include <iosfwd>
 
 #include "src/globals.h"
 
 // Opcodes for control operators.
 #define CONTROL_OP_LIST(V) \
   V(Start)                 \
   V(Loop)                  \
   V(Branch)                \
   V(Switch)                \
   V(IfTrue)                \
   V(IfFalse)               \
   V(IfSuccess)             \
   V(IfException)           \
   V(IfValue)               \
   V(IfDefault)             \
   V(Merge)                 \
   V(Deoptimize)            \
   V(DeoptimizeIf)          \
   V(DeoptimizeUnless)      \
+  V(TrapIf)                \
+  V(TrapUnless)            \
   V(Return)                \
   V(TailCall)              \
   V(Terminate)             \
   V(OsrNormalEntry)        \
   V(OsrLoopEntry)          \
   V(Throw)                 \
   V(End)
 
 // Opcodes for constant operators.
 #define CONSTANT_OP_LIST(V)   \
@@ skipping 759 matching lines @@
   }
 };
 
 V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream&, IrOpcode::Value);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_OPCODES_H_