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      1 // Copyright 2013 the V8 project authors. All rights reserved.
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      3 // modification, are permitted provided that the following conditions are
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     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --allow-natives-syntax
     29 
     30 // Test inlining and deoptimization of function.apply(this, arguments)
     31 // calls for which the exact number of arguments is known.
     32 (function () {
     33   "use strict";
     34   function test(argumentsCount) {
     35     var dispatcher = {};
     36     var deoptimize = { deopt:false };
     37     dispatcher["const" + argumentsCount] = 0;
     38     dispatcher.func = C;
     39 
     40     function A(x,y) {
     41       var r = "A";
     42       if (argumentsCount == 1) r += B(10);
     43       if (argumentsCount == 2) r += B(10, 11);
     44       if (argumentsCount == 3) r += B(10, 11, 12);
     45       assertSame(1, x);
     46       assertSame(2, y);
     47       return r;
     48     }
     49 
     50     function B(x,y) {
     51       x = 0; y = 0;
     52       var r = "B" + dispatcher.func.apply(this, arguments);
     53       assertSame(argumentsCount, arguments.length);
     54       for (var i = 0; i < arguments.length; i++) {
     55         assertSame(10 + i, arguments[i]);
     56       }
     57       return r;
     58     }
     59 
     60     function C(x,y) {
     61       x = 0; y = 0;
     62       var r = "C"
     63       deoptimize.deopt;
     64       assertSame(argumentsCount, arguments.length);
     65       for (var i = 0; i < arguments.length; i++) {
     66         assertSame(10 + i, arguments[i]);
     67       }
     68       return r;
     69     }
     70 
     71     assertEquals("ABC", A(1,2));
     72     assertEquals("ABC", A(1,2));
     73     %OptimizeFunctionOnNextCall(A);
     74     assertEquals("ABC", A(1,2));
     75     delete deoptimize.deopt;
     76     assertEquals("ABC", A(1,2));
     77 
     78     %DeoptimizeFunction(A);
     79     %ClearFunctionTypeFeedback(A);
     80     %DeoptimizeFunction(B);
     81     %ClearFunctionTypeFeedback(B);
     82     %DeoptimizeFunction(C);
     83     %ClearFunctionTypeFeedback(C);
     84   }
     85 
     86   for (var a = 1; a <= 3; a++) {
     87     test(a);
     88   }
     89 })();
     90