Added allocation folding support for old space allocations.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index 074432288d86ec4efce74ecececdf15d64e4ea2f..fb4963de90808968a9ffb48f68319cb9a982bcfb 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -2115,6 +2115,78 @@ TEST(OptimizedAllocationAlwaysInNewSpace) {
 }
 
 
+TEST(OptimizedPretenuringAllocationFolding) {
+  i::FLAG_allow_natives_syntax = true;
+  CcTest::InitializeVM();
+  if (!i::V8::UseCrankshaft() || i::FLAG_always_opt) return;
+  if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
+  v8::HandleScope scope(CcTest::isolate());
+  HEAP->SetNewSpaceHighPromotionModeActive(true);
+
+  v8::Local<v8::Value> res = CompileRun(
+      "function DataObject() {"
+      "  this.a = 1.1;"
+      "  this.b = [{}];"
+      "  this.c = 1.2;"
+      "  this.d = [{}];"
+      "  this.e = 1.3;"
+      "  this.f = [{}];"
+      "}"
+      "function f() {"
+      "  return new DataObject();"
+      "};"
+      "f(); f(); f();"
+      "%OptimizeFunctionOnNextCall(f);"
+      "f();");
+
+  Handle<JSObject> o =
+      v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
+
+  CHECK(HEAP->InOldDataSpace(o->RawFastPropertyAt(0)));
+  CHECK(HEAP->InOldPointerSpace(o->RawFastPropertyAt(1)));
+  CHECK(HEAP->InOldDataSpace(o->RawFastPropertyAt(2)));
+  CHECK(HEAP->InOldPointerSpace(o->RawFastPropertyAt(3)));
+  CHECK(HEAP->InOldDataSpace(o->RawFastPropertyAt(4)));
+  CHECK(HEAP->InOldPointerSpace(o->RawFastPropertyAt(5)));
+}
+
+
+TEST(OptimizedPretenuringAllocationFoldingBlocks) {
+  i::FLAG_allow_natives_syntax = true;
+  CcTest::InitializeVM();
+  if (!i::V8::UseCrankshaft() || i::FLAG_always_opt) return;
+  if (i::FLAG_gc_global || i::FLAG_stress_compaction) return;
+  v8::HandleScope scope(CcTest::isolate());
+  HEAP->SetNewSpaceHighPromotionModeActive(true);
+
+  v8::Local<v8::Value> res = CompileRun(
+      "function DataObject() {"
+      "  this.a = [{}];"
+      "  this.b = [{}];"
+      "  this.c = 1.1;"
+      "  this.d = 1.2;"
+      "  this.e = [{}];"
+      "  this.f = 1.3;"
+      "}"
+      "function f() {"
+      "  return new DataObject();"
+      "};"
+      "f(); f(); f();"
+      "%OptimizeFunctionOnNextCall(f);"
+      "f();");
+
+  Handle<JSObject> o =
+      v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
+
+  CHECK(HEAP->InOldPointerSpace(o->RawFastPropertyAt(0)));
+  CHECK(HEAP->InOldPointerSpace(o->RawFastPropertyAt(1)));
+  CHECK(HEAP->InOldDataSpace(o->RawFastPropertyAt(2)));
+  CHECK(HEAP->InOldDataSpace(o->RawFastPropertyAt(3)));
+  CHECK(HEAP->InOldPointerSpace(o->RawFastPropertyAt(4)));
+  CHECK(HEAP->InOldDataSpace(o->RawFastPropertyAt(5)));
+}
+
+
 TEST(OptimizedPretenuringObjectArrayLiterals) {
   i::FLAG_allow_natives_syntax = true;
   CcTest::InitializeVM();