Roll V8 back to 3.6

Roll back to V8 3.6 to fix x86 build, we don't have ucontext.h.

This reverts commits:
5d4cdbf7a67d3662fa0bee4efdb7edd8daec9b0b
c7cc028aaeedbbfa11c11d0b7b243b3d9e837ed9
592a9fc1d8ea420377a2e7efd0600e20b058be2b

Bug: 5688872
Change-Id: Ic961bb5e65b778e98bbfb71cce71d99fa949e995
diff --git a/test/mjsunit/unbox-double-arrays.js b/test/mjsunit/unbox-double-arrays.js
index fd7db28..feecaec 100644
--- a/test/mjsunit/unbox-double-arrays.js
+++ b/test/mjsunit/unbox-double-arrays.js
@@ -77,6 +77,8 @@
     assertEquals(value_6, a[6]);
     assertEquals(value_6, a[computed_6()]); // Test non-constant key
     assertEquals(value_7, a[7]);
+    assertEquals(undefined, a[large_array_size-1]);
+    assertEquals(undefined, a[-1]);
     assertEquals(large_array_size, a.length);
     assertTrue(%HasFastDoubleElements(a));
   }
@@ -87,6 +89,8 @@
     assertEquals(value_6, a[6]);
     assertEquals(value_6, a[computed_6()]); // Test non-constant key
     assertEquals(value_7, a[7]);
+    assertEquals(undefined, a[large_array_size-1]);
+    assertEquals(undefined, a[-1]);
     assertEquals(large_array_size, a.length);
     assertTrue(%HasFastDoubleElements(a));
   }
@@ -97,6 +101,8 @@
     assertEquals(value_6, a[6]);
     assertEquals(value_6, a[computed_6()]); // Test non-constant key
     assertEquals(value_7, a[7]);
+    assertEquals(undefined, a[large_array_size-1]);
+    assertEquals(undefined, a[-1]);
     assertEquals(large_array_size, a.length);
     assertTrue(%HasFastDoubleElements(a));
   }
@@ -107,20 +113,20 @@
     assertEquals(value_6, a[6]);
     assertEquals(value_6, a[computed_6()]); // Test non-constant key
     assertEquals(value_7, a[7]);
+    assertEquals(undefined, a[large_array_size-1]);
+    assertEquals(undefined, a[-1]);
     assertEquals(large_array_size, a.length);
     assertTrue(%HasFastDoubleElements(a));
   }
 
   function test_various_loads5(a, value_5, value_6, value_7) {
     assertTrue(%HasFastDoubleElements(a));
-    if (value_5 != undefined) {
-      assertEquals(value_5, a[5]);
-    };
-    if (value_6 != undefined) {
-      assertEquals(value_6, a[6]);
-      assertEquals(value_6, a[computed_6()]); // Test non-constant key
-    }
+    assertEquals(value_5, a[5]);
+    assertEquals(value_6, a[6]);
+    assertEquals(value_6, a[computed_6()]); // Test non-constant key
     assertEquals(value_7, a[7]);
+    assertEquals(undefined, a[large_array_size-1]);
+    assertEquals(undefined, a[-1]);
     assertEquals(large_array_size, a.length);
     assertTrue(%HasFastDoubleElements(a));
   }
@@ -131,16 +137,8 @@
     assertEquals(value_6, a[6]);
     assertEquals(value_6, a[computed_6()]); // Test non-constant key
     assertEquals(value_7, a[7]);
-    assertEquals(large_array_size, a.length);
-    assertTrue(%HasFastDoubleElements(a));
-  }
-
-  function test_various_loads7(a, value_5, value_6, value_7) {
-    assertTrue(%HasFastDoubleElements(a));
-    assertEquals(value_5, a[5]);
-    assertEquals(value_6, a[6]);
-    assertEquals(value_6, a[computed_6()]); // Test non-constant key
-    assertEquals(value_7, a[7]);
+    assertEquals(undefined, a[large_array_size-1]);
+    assertEquals(undefined, a[-1]);
     assertEquals(large_array_size, a.length);
     assertTrue(%HasFastDoubleElements(a));
   }
@@ -250,8 +248,6 @@
                       expected_array_value(7));
 
   // Make sure Crankshaft code handles the hole correctly (bailout)
-  var large_array = new allocator(large_array_size);
-  force_to_fast_double_array(large_array);
   test_various_stores(large_array,
                       expected_array_value(5),
                       expected_array_value(6),
@@ -277,12 +273,7 @@
                       undefined,
                       expected_array_value(7));
 
-  %DeoptimizeFunction(test_various_loads6);
-  gc();
-
   // Test stores for non-NaN.
-  var large_array = new allocator(large_array_size);
-  force_to_fast_double_array(large_array);
   %OptimizeFunctionOnNextCall(test_various_stores);
   test_various_stores(large_array,
                       expected_array_value(5),
@@ -294,19 +285,7 @@
                       expected_array_value(6),
                       expected_array_value(7));
 
-  test_various_loads7(large_array,
-                      expected_array_value(5),
-                      expected_array_value(6),
-                      expected_array_value(7));
-
-  test_various_loads7(large_array,
-                      expected_array_value(5),
-                      expected_array_value(6),
-                      expected_array_value(7));
-
-  %OptimizeFunctionOnNextCall(test_various_loads7);
-
-  test_various_loads7(large_array,
+  test_various_loads6(large_array,
                       expected_array_value(5),
                       expected_array_value(6),
                       expected_array_value(7));
@@ -322,7 +301,7 @@
                       -NaN,
                       expected_array_value(7));
 
-  test_various_loads7(large_array,
+  test_various_loads6(large_array,
                       NaN,
                       -NaN,
                       expected_array_value(7));
@@ -338,7 +317,7 @@
                       -Infinity,
                       expected_array_value(7));
 
-  test_various_loads7(large_array,
+  test_various_loads6(large_array,
                       Infinity,
                       -Infinity,
                       expected_array_value(7));
@@ -455,6 +434,7 @@
 large_array3[4] = -Infinity;
 
 function call_apply() {
+  assertTrue(%HasFastDoubleElements(large_array3));
   called_by_apply.apply({}, large_array3);
 }
 
@@ -469,6 +449,7 @@
 function test_for_in() {
   // Due to previous tests, keys 0..25 and 95 should be present.
   next_expected = 0;
+  assertTrue(%HasFastDoubleElements(large_array3));
   for (x in large_array3) {
     assertTrue(next_expected++ == x);
     if (next_expected == 25) {