Refactor and improve inlined double-aligned allocations

src/ia32/macro-assembler-ia32.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17 matching lines @@
 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_
 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_
 
 #include "assembler.h"
 #include "frames.h"
 #include "v8globals.h"
 
 namespace v8 {
 namespace internal {
 
-// Flags used for the AllocateInNewSpace functions.
-enum AllocationFlags {
-  // No special flags.
-  NO_ALLOCATION_FLAGS = 0,
-  // Return the pointer to the allocated already tagged as a heap object.
-  TAG_OBJECT = 1 << 0,
-  // The content of the result register already contains the allocation top in
-  // new space.
-  RESULT_CONTAINS_TOP = 1 << 1
-};
-
-
 // Convenience for platform-independent signatures.  We do not normally
 // distinguish memory operands from other operands on ia32.
 typedef Operand MemOperand;
 
 enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET };
 enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK };
 
 
+enum RegisterValueType {
+  REGISTER_VALUE_IS_SMI,
+  REGISTER_VALUE_IS_INT32
+};
+
+
 bool AreAliased(Register r1, Register r2, Register r3, Register r4);
 
 
 // MacroAssembler implements a collection of frequently used macros.
 class MacroAssembler: public Assembler {
  public:
   // The isolate parameter can be NULL if the macro assembler should
   // not use isolate-dependent functionality. In this case, it's the
   // responsibility of the caller to never invoke such function on the
   // macro assembler.
@@ skipping 501 matching lines @@
   void AllocateInNewSpace(int object_size,
                           Register result,
                           Register result_end,
                           Register scratch,
                           Label* gc_required,
                           AllocationFlags flags);
 
   void AllocateInNewSpace(int header_size,
                           ScaleFactor element_size,
                           Register element_count,
+                          RegisterValueType element_count_type,
                           Register result,
                           Register result_end,
                           Register scratch,
                           Label* gc_required,
                           AllocationFlags flags);
 
   void AllocateInNewSpace(Register object_size,
                           Register result,
                           Register result_end,
                           Register scratch,
@@ skipping 411 matching lines @@
   }                                                                       \
   masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_MACRO_ASSEMBLER_IA32_H_