Reverting 2797.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
===================================================================
--- src/arm/macro-assembler-arm.cc	(revision 2798)
+++ src/arm/macro-assembler-arm.cc	(working copy)
@@ -790,7 +790,7 @@
       ExternalReference::new_space_allocation_limit_address();
   mov(scratch2, Operand(new_space_allocation_limit));
   ldr(scratch2, MemOperand(scratch2));
-  add(result, result, Operand(object_size * kPointerSize));
+  add(result, result, Operand(object_size));
   cmp(result, Operand(scratch2));
   b(hi, gc_required);
 
@@ -799,84 +799,18 @@
 
   // Tag and adjust back to start of new object.
   if (tag_allocated_object) {
-    sub(result, result, Operand((object_size * kPointerSize) -
-                                kHeapObjectTag));
+    sub(result, result, Operand(object_size - kHeapObjectTag));
   } else {
-    sub(result, result, Operand(object_size * kPointerSize));
+    sub(result, result, Operand(object_size));
   }
 }
 
 
-void MacroAssembler::AllocateObjectInNewSpace(Register object_size,
-                                              Register result,
-                                              Register scratch1,
-                                              Register scratch2,
-                                              Label* gc_required,
-                                              bool tag_allocated_object) {
-  ASSERT(!result.is(scratch1));
-  ASSERT(!scratch1.is(scratch2));
-
-  // Load address of new object into result and allocation top address into
-  // scratch1.
-  ExternalReference new_space_allocation_top =
-      ExternalReference::new_space_allocation_top_address();
-  mov(scratch1, Operand(new_space_allocation_top));
-  ldr(result, MemOperand(scratch1));
-
-  // Calculate new top and bail out if new space is exhausted. Use result
-  // to calculate the new top. Object size is in words so a shift is required to
-  // get the number of bytes
-  ExternalReference new_space_allocation_limit =
-      ExternalReference::new_space_allocation_limit_address();
-  mov(scratch2, Operand(new_space_allocation_limit));
-  ldr(scratch2, MemOperand(scratch2));
-  add(result, result, Operand(object_size, LSL, kPointerSizeLog2));
-
-  cmp(result, Operand(scratch2));
-  b(hi, gc_required);
-
-  // Update allocation top. result temporarily holds the new top,
-  str(result, MemOperand(scratch1));
-
-  // Tag and adjust back to start of new object.
-  if (tag_allocated_object) {
-    sub(result, result, Operand(object_size, LSL, kPointerSizeLog2));
-    add(result, result, Operand(kHeapObjectTag));
-  } else {
-    sub(result, result, Operand(object_size, LSL, kPointerSizeLog2));
-  }
-}
-
-
-void MacroAssembler::UndoAllocationInNewSpace(Register object,
-                                              Register scratch) {
-  ExternalReference new_space_allocation_top =
-      ExternalReference::new_space_allocation_top_address();
-
-  // Make sure the object has no tag before resetting top.
-  and_(object, object, Operand(~kHeapObjectTagMask));
-#ifdef DEBUG
-  mov(scratch, Operand(new_space_allocation_top));
-  ldr(scratch, MemOperand(scratch));
-  cmp(object, scratch);
-  Check(lt, "Undo allocation of non allocated memory");
-#endif
-  str(object, MemOperand(scratch));
-}
-
-
 void MacroAssembler::CompareObjectType(Register function,
                                        Register map,
                                        Register type_reg,
                                        InstanceType type) {
   ldr(map, FieldMemOperand(function, HeapObject::kMapOffset));
-  CompareInstanceType(map, type_reg, type);
-}
-
-
-void MacroAssembler::CompareInstanceType(Register map,
-                                         Register type_reg,
-                                         InstanceType type) {
   ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset));
   cmp(type_reg, Operand(type));
 }