handle WASM trap in the instruction scheduler.

src/compiler/instruction.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_INSTRUCTION_H_
 #define V8_COMPILER_INSTRUCTION_H_
 
 #include <deque>
 #include <iosfwd>
 #include <map>
@@ skipping 879 matching lines @@
     reference_map_ = nullptr;
   }
 
   bool IsNop() const { return arch_opcode() == kArchNop; }
 
   bool IsDeoptimizeCall() const {
     return arch_opcode() == ArchOpcode::kArchDeoptimize ||
            FlagsModeField::decode(opcode()) == kFlags_deoptimize;
   }
 
+  bool IsTrap() const {
+    return FlagsModeField::decode(opcode()) == kFlags_trap;
+  }
+
   bool IsJump() const { return arch_opcode() == ArchOpcode::kArchJmp; }
   bool IsRet() const { return arch_opcode() == ArchOpcode::kArchRet; }
   bool IsTailCall() const {
     return arch_opcode() == ArchOpcode::kArchTailCallCodeObject ||
            arch_opcode() == ArchOpcode::kArchTailCallCodeObjectFromJSFunction ||
            arch_opcode() == ArchOpcode::kArchTailCallJSFunctionFromJSFunction ||
            arch_opcode() == ArchOpcode::kArchTailCallAddress;
   }
   bool IsThrow() const {
     return arch_opcode() == ArchOpcode::kArchThrowTerminator;
@@ skipping 756 matching lines @@
 };
 
 V8_EXPORT_PRIVATE std::ostream& operator<<(
     std::ostream& os, const PrintableInstructionSequence& code);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_H_