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

src/compiler/common-operator.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_COMMON_OPERATOR_H_
 #define V8_COMPILER_COMMON_OPERATOR_H_
 
 #include "src/assembler.h"
 #include "src/base/compiler-specific.h"
 #include "src/compiler/frame-states.h"
@@ skipping 187 matching lines @@
   const Operator* IfFalse();
   const Operator* IfSuccess();
   const Operator* IfException();
   const Operator* Switch(size_t control_output_count);
   const Operator* IfValue(int32_t value);
   const Operator* IfDefault();
   const Operator* Throw();
   const Operator* Deoptimize(DeoptimizeKind kind, DeoptimizeReason reason);
   const Operator* DeoptimizeIf(DeoptimizeReason reason);
   const Operator* DeoptimizeUnless(DeoptimizeReason reason);
+  const Operator* TrapIf(int32_t trap_id);
+  const Operator* TrapUnless(int32_t trap_id);
   const Operator* Return(int value_input_count = 1);
   const Operator* Terminate();
 
   const Operator* Start(int value_output_count);
   const Operator* Loop(int control_input_count);
   const Operator* Merge(int control_input_count);
   const Operator* Parameter(int index, const char* debug_name = nullptr);
 
   const Operator* OsrNormalEntry();
   const Operator* OsrLoopEntry();
@@ skipping 60 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(CommonOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_COMMON_OPERATOR_H_