Remove explicit double alignment from allocation helper functions.

src/heap/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 #include <map>
 
@@ skipping 1802 matching lines @@
     return (pretenure == TENURED) ? OLD_SPACE : NEW_SPACE;
   }
 
   HeapObject* DoubleAlignForDeserialization(HeapObject* object, int size);
 
   // Allocate an uninitialized object.  The memory is non-executable if the
   // hardware and OS allow.  This is the single choke-point for allocations
   // performed by the runtime and should not be bypassed (to extend this to
   // inlined allocations, use the Heap::DisableInlineAllocation() support).
   MUST_USE_RESULT inline AllocationResult AllocateRaw(
-      int size_in_bytes, AllocationSpace space, AllocationSpace retry_space);
+      int size_in_bytes, AllocationSpace space, AllocationSpace retry_space,
+      bool double_align = false);

[Benedikt Meurer, 2015/05/08 11:47:42]

Please don't use bool. Add an enum AlignmentConstraint {kWordAlign,kDoubleAlign}
or something like that.

[Hannes Payer (out of office), 2015/05/08 11:59:25]

Done.

 
   // Allocates a heap object based on the map.
   MUST_USE_RESULT AllocationResult
       Allocate(Map* map, AllocationSpace space,
                AllocationSite* allocation_site = NULL);
 
   // Allocates a partial map for bootstrapping.
   MUST_USE_RESULT AllocationResult
       AllocatePartialMap(InstanceType instance_type, int instance_size);
 
@@ skipping 805 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_