Upgrade to V8 3.5
Merge V8 3.5.10.24
Simple merge required updates to makefiles only.
Bug: 5688872
Change-Id: I0acdb9a1a53919d84e9a7525308e8371739d2f06
diff --git a/test/mjsunit/math-round.js b/test/mjsunit/math-round.js
index 1366557..102c970 100644
--- a/test/mjsunit/math-round.js
+++ b/test/mjsunit/math-round.js
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 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:
@@ -27,10 +27,12 @@
// Flags: --allow-natives-syntax
+var test_id = 0;
function testRound(expect, input) {
- function doRound(input) {
- return Math.round(input);
- }
+ // Make source code different on each invocation to make
+ // sure it gets optimized each time.
+ var doRound = new Function('input',
+ '"' + (test_id++) + '";return Math.round(input)');
assertEquals(expect, doRound(input));
assertEquals(expect, doRound(input));
assertEquals(expect, doRound(input));
@@ -44,6 +46,21 @@
testRound(-Infinity, -Infinity);
testRound(NaN, NaN);
+// Regression test for a bug where a negative zero coming from Math.round
+// was not properly handled by other operations.
+function roundsum(i, n) {
+ var ret = Math.round(n);
+ while (--i > 0) {
+ ret += Math.round(n);
+ }
+ return ret;
+}
+assertEquals(-0, roundsum(1, -0));
+%OptimizeFunctionOnNextCall(roundsum);
+// The optimized function will deopt. Run it with enough iterations to try
+// to optimize via OSR (triggering the bug).
+assertEquals(-0, roundsum(100000, -0));
+
testRound(1, 0.5);
testRound(1, 0.7);
testRound(1, 1);