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      1 // Copyright 2010 the V8 project authors. All rights reserved.
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     27 
     28 // Flags: --allow-natives-syntax
     29 
     30 function f(x) {
     31   return ~x;
     32 }
     33 
     34 f(42);
     35 assertEquals(~12, f(12.45));
     36 assertEquals(~42, f(42.87));
     37 
     38 
     39 var a = 1, b = 2, c = 4, d = 8;
     40 function g() {
     41   return a | (b | (c | d));
     42 }
     43 
     44 g();
     45 c = "16";
     46 assertEquals(1 | 2 | 16 | 8, g());
     47 
     48 
     49 // Test deopt when global function changes.
     50 function h() {
     51   return g();
     52 }
     53 assertEquals(1 | 2 | 16 | 8, h());
     54 g = function() { return 42; };
     55 assertEquals(42, h());
     56 
     57 
     58 // Test deopt when map changes.
     59 var obj = {};
     60 obj.g = g;
     61 function k(o) {
     62   return o.g();
     63 }
     64 for (var i = 0; i < 5; i++) k(obj);
     65 %OptimizeFunctionOnNextCall(k);
     66 k(obj);
     67 assertEquals(42, k(obj));
     68 assertEquals(87, k({g: function() { return 87; }}));
     69 
     70 
     71 // Test deopt with assignments to parameters.
     72 function p(x,y) {
     73   x = 42;
     74   y = 1;
     75   y = y << "0";
     76   return x | y;
     77 }
     78 assertEquals(43, p(0,0));
     79 
     80 
     81 // Test deopt with literals on the expression stack.
     82 function LiteralToStack(x) {
     83   return 'lit[' + (x + ']');
     84 }
     85 
     86 assertEquals('lit[-87]', LiteralToStack(-87));
     87 assertEquals('lit[0]', LiteralToStack(0));
     88 assertEquals('lit[42]', LiteralToStack(42));
     89 
     90 
     91 // Test deopt before call.
     92 var str = "abc";
     93 var r;
     94 function CallCharAt(n) { return str.charAt(n); }
     95 for (var i = 0; i < 5; i++) {
     96   r = CallCharAt(0);
     97 }
     98 %OptimizeFunctionOnNextCall(CallCharAt);
     99 r = CallCharAt(0);
    100 assertEquals("a", r);
    101 
    102 
    103 // Test of deopt in presence of spilling.
    104 function add4(a,b,c,d) {
    105   return a+b+c+d;
    106 }
    107 assertEquals(0x40000003, add4(1,1,2,0x3fffffff));
    108