74     // 2 : 2 means pairs  in CallRuntime()
82     // 3 : 3 means 2 << 3 = 8  in CallRuntime()
94     // 2 ：2 means stack frame slot size  in CallRuntime()
243         __ Str(env, MemoryOperand(sp, 0)); // 0: means zero size  in OptimizedCallOptimized()
248     // 3 : 3 means argC * 8  in OptimizedCallOptimized()
417             // 3 : 3 means call0 call1 call2 call3  in JSCallInternal()
510         // 2 : 2 means pair  in JSCallInternal()
517         // 2 : 2 means pair  in JSCallInternal()
520         // 4 : 4 means stack slot  in JSCallInternal()
626     // 4 : 4 means JSType::JS_FUNCTION_FIRST  in JSCallCheck()
628     // 9 : 9 means JSType::JS_FUNCTION_LAST - JSType::JS_FUNCTION_FIRST + 1  in JSCallCheck()
642     // 2 : 2 means pair  in ThrowNonCallableInternal()
649     // 2 : 2 means pair  in ThrowNonCallableInternal()
653     // 4 : 4 means stack slot  in ThrowNonCallableInternal()
743         // 2 : 2 means pair  in JSBoundFunctionCallInternal()
746         // 2 : 2 means pair  in JSBoundFunctionCallInternal()
824     // 2 : 2 means pair  in CallRuntimeWithArgv()
839     // 3 : 3 means 2 << 3 = 8  in CallRuntimeWithArgv()
847     __ Add(sp, sp, Immediate(3 * FRAME_SLOT_SIZE)); // 3 : 3 means pair  in CallRuntimeWithArgv()
891     // 2 : 2 means pairs  in PushJSFunctionEntryFrame()
919     // 2 : 2 means pairs. X19 means calleesave and 16bytes align  in PushOptimizedArgsConfigFrame()
929     // 2 : 2 means pop call site sp and type  in PopOptimizedArgsConfigFrame()
942     // 2 : 2 means pairs. X19 means calleesave and 16bytes align  in PushOptimizedFrame()
952     // 2 : 2 means pop call site sp and type  in PopOptimizedFrame()
987     // 2 : 2 means pairs  in PushOptimizedUnfoldArgVFrame()
995     // 2 : 2 means pop call site sp and type  in PopOptimizedUnfoldArgVFrame()
1236         // 2 : 2 means pair  in DeoptHandlerAsm()