Support OSR in for-in loops.

test/mjsunit/compiler/optimized-for-in.js

Index: test/mjsunit/compiler/optimized-for-in.js
diff --git a/test/mjsunit/compiler/optimized-for-in.js b/test/mjsunit/compiler/optimized-for-in.js
index c8076ac73659301608a806a834cab8268e949690..4b841b20d40bff78c3068abe03d3733a43951e84 100644
--- a/test/mjsunit/compiler/optimized-for-in.js
+++ b/test/mjsunit/compiler/optimized-for-in.js
@@ -242,3 +242,23 @@ tryFunction("a1b2c3d4e5f6", function () {
   for (var i in t) r.push(i + t[i]);
   return r.join('');
 });
+
+// Test OSR inside for each.

[fschneider, 2012/02/22 15:29:59]

s/for each/for-in/

+function osr (t) {
+  var sum = 0;
+  for (var x in t) {
+      for (var i = 0; i < t[x].length; i++) {
+	sum += t[x][i];
+      }
+  }
+  return sum;
+}
+
+function test_osr() {
+  with ({}) {}  // Disable optimizations of this function.
+  var arr = new Array(1000000);
+  for (var i = 0; i < arr.length; i++) arr[i] = i;
+  osr({x: arr});
+}
+
+test_osr();