Clean up aligned allocation code in preparation for SIMD alignments.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 761983178d4b0f4d2f316744eed9d4ff818474e4..10caab29739e3fcb59684c0522c5e0ead1eb1f73 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -438,7 +438,7 @@ enum AllocationSpace {
 const int kSpaceTagSize = 3;
 const int kSpaceTagMask = (1 << kSpaceTagSize) - 1;
 
-enum AllocationAlignment { kWordAligned, kDoubleAligned, kDoubleUnaligned };
+enum AllocationAlignment { kWordAligned, kDoubleAligned, kDoubleValueAligned };

[Hannes Payer (out of office), 2015/05/22 10:56:15]

I called it kDoubleUnaligned because it is general. kDoubleValueAligned just
corresponds to the HeapNumber case, not necessarily to any other object type,
for which the value would have to be aligned differently.

 
 // A flag that indicates whether objects should be pretenured when
 // allocated (allocated directly into the old generation) or not