Supporting AllocationSiteInfo for Nested arrays

src/ia32/code-stubs-ia32.cc

 // 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 387 matching lines @@
       }
       ASSERT(i == elements_size);
     }
   }
 }
 
 
 void FastCloneShallowArrayStub::Generate(MacroAssembler* masm) {
   // Stack layout on entry:
   //
-  // [esp + kPointerSize]: constant elements.
-  // [esp + (2 * kPointerSize)]: literal index.
-  // [esp + (3 * kPointerSize)]: literals array.
+  // [esp + kPointerSize]: flags (ignored)
+  // [esp + (2 * kPointerSize)]: constant elements.
+  // [esp + (3 * kPointerSize)]: literal index.
+  // [esp + (4 * kPointerSize)]: literals array.
 
   // Load boilerplate object into ecx and check if we need to create a
   // boilerplate.
-  __ mov(ecx, Operand(esp, 3 * kPointerSize));
-  __ mov(eax, Operand(esp, 2 * kPointerSize));
+  __ mov(ecx, Operand(esp, 4 * kPointerSize));
+  __ mov(eax, Operand(esp, 3 * kPointerSize));
   STATIC_ASSERT(kPointerSize == 4);
   STATIC_ASSERT(kSmiTagSize == 1);
   STATIC_ASSERT(kSmiTag == 0);
   __ mov(ecx, FieldOperand(ecx, eax, times_half_pointer_size,
                            FixedArray::kHeaderSize));
   Factory* factory = masm->isolate()->factory();
   __ cmp(ecx, factory->undefined_value());
   Label slow_case;
   __ j(equal, &slow_case);
 
   FastCloneShallowArrayStub::Mode mode = mode_;
   // ecx is boilerplate object.
   if (mode == CLONE_ANY_ELEMENTS) {
     Label double_elements, check_fast_elements;
     __ mov(ebx, FieldOperand(ecx, JSArray::kElementsOffset));
     __ CheckMap(ebx, factory->fixed_cow_array_map(),
                 &check_fast_elements, DONT_DO_SMI_CHECK);
     GenerateFastCloneShallowArrayCommon(masm, 0, COPY_ON_WRITE_ELEMENTS,
                                         allocation_site_mode_,
                                         &slow_case);
-    __ ret(3 * kPointerSize);
+    __ ret(4 * kPointerSize);
 
     __ bind(&check_fast_elements);
     __ CheckMap(ebx, factory->fixed_array_map(),
                 &double_elements, DONT_DO_SMI_CHECK);
     GenerateFastCloneShallowArrayCommon(masm, length_, CLONE_ELEMENTS,
                                         allocation_site_mode_,
                                         &slow_case);
-    __ ret(3 * kPointerSize);
+    __ ret(4 * kPointerSize);
 
     __ bind(&double_elements);
     mode = CLONE_DOUBLE_ELEMENTS;
     // Fall through to generate the code to handle double elements.
   }
 
   if (FLAG_debug_code) {
     const char* message;
     Handle<Map> expected_map;
     if (mode == CLONE_ELEMENTS) {
@@ skipping 12 matching lines @@
     __ cmp(FieldOperand(ecx, HeapObject::kMapOffset), expected_map);
     __ Assert(equal, message);
     __ pop(ecx);
   }
 
   GenerateFastCloneShallowArrayCommon(masm, length_, mode,
                                       allocation_site_mode_,
                                       &slow_case);
 
   // Return and remove the on-stack parameters.
-  __ ret(3 * kPointerSize);
+  __ ret(4 * kPointerSize);
 
   __ bind(&slow_case);
-  __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 3, 1);
+  __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 4, 1);
 }
 
 
 void FastCloneShallowObjectStub::Generate(MacroAssembler* masm) {
   // Stack layout on entry:
   //
   // [esp + kPointerSize]: object literal flags.
   // [esp + (2 * kPointerSize)]: constant properties.
   // [esp + (3 * kPointerSize)]: literal index.
   // [esp + (4 * kPointerSize)]: literals array.
@@ skipping 7177 matching lines @@
   // Restore ecx.
   __ pop(ecx);
   __ ret(0);
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32