[Isolates] Merge crankshaft (r5922 from bleeding_edge).

test/mjsunit/compiler/count-deopt.js

+// Copyright 2010 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Test deopt with count operation on parameter.
+var max_smi = 1073741823;
+var o = {x:0};
+
+function inc1(x) { x++; o.x = x; }
+inc1(max_smi);
+assertEquals(max_smi + 1, o.x);
+
+inc1(1.1);
+assertEquals(2.1, o.x);
+
+
+// Test deopt with count operation on named property.
+function inc2(p) { p.x++ }
+
+o.x = "42";
+inc2(o);
+assertEquals(43, o.x);
+
+var s = max_smi - 10000;
+o.x = s;
+for(var i = 0; i < 20000; i++) {
+  inc2(o);
+}
+assertEquals(max_smi + 10000, o.x);
+
+
+// Test deopt with count operation on keyed property.
+function inc3(a, b) { a[b]++; }
+
+o = ["42"];
+inc3(o, 0);
+assertEquals(43, o[0]);
+
+var s = max_smi - 10000;
+o[0] = s;
+for(var i = 0; i < 20000; i++) {
+  inc3(o, 0);
+}
+assertEquals(max_smi + 10000, o[0]);
+
+inc3(o,"0");
+
+assertEquals(max_smi + 10001, o[0]);
+
+// Test bailout when accessing a non-existing array element.
+o[0] = 0;
+for(var i = 0; i < 10000; i++) {
+  inc3(o, 0);
+}
+inc3(o,1);
+
+// Test bailout with count operation in a value context.
+function inc4(x,y) { return (x++) + y; }
+for (var i = 0; i < 100000; ++i) assertEquals(3, inc4(2, 1));
+assertEquals(3.1, inc4(2, 1.1));
+
+function inc5(x,y) { return (++x) + y; }
+for (var i = 0; i < 100000; ++i) assertEquals(4, inc5(2, 1));
+assertEquals(4.1, inc5(2, 1.1));
+assertEquals(4.1, inc5(2.1, 1));
+
+function inc6(o,y) { return (o.x++) + y; }
+o = {x:0};
+for (var i = 0; i < 10000; ++i) {
+  o.x = 42;
+  assertEquals(43, inc6(o, 1));
+}
+o.x = 42;
+assertEquals(43.1, inc6(o, 1.1));
+o.x = 42.1;
+assertEquals(43.1, inc6(o, 1));
+
+function inc7(o,y) { return (++o.x) + y; }
+o = {x:0};
+for (var i = 0; i < 10000; ++i) {
+  o.x = 42;
+  assertEquals(44, inc7(o, 1));
+}
+o.x = 42;
+assertEquals(44.1, inc7(o, 1.1));
+o.x = 42.1;
+assertEquals(44.1, inc7(o, 1));
+
+function inc8(o,y) { return (o[0]++) + y; }
+var q = [0];
+for (var i = 0; i < 100000; ++i) {
+  q[0] = 42;
+  assertEquals(43, inc8(q, 1));
+}
+q[0] = 42;
+assertEquals(43.1, inc8(q, 1.1));
+q[0] = 42.1;
+assertEquals(43.1, inc8(q, 1));
+
+function inc9(o,y) { return (++o[0]) + y; }
+q = [0];
+for (var i = 0; i < 100000; ++i) {
+  q[0] = 42;
+  assertEquals(44, inc9(q, 1));
+}
+q[0] = 42;
+assertEquals(44.1, inc9(q, 1.1));
+q[0] = 42.1;
+assertEquals(44.1, inc9(q, 1));
+
+// Test deopt because of a failed map check.
+function inc10(p) { return p.x++ }
+var g1 = {x:0};
+var g2 = {y:0, x:42}
+for (var i = 0; i < 10000; ++i) {
+  g1.x = 42;
+  assertEquals(42, inc10(g1));
+  assertEquals(43, g1.x);
+}
+assertEquals(42, inc10(g2));
+assertEquals(43, g2.x);
+
+// Test deoptimization with postfix operation in a value context.
+function inc11(a) { return a[this.x++]; }
+var g3 = {x:null, f:inc11};
+var g4 = [42];
+assertEquals(42, g3.f(g4));