[stubs] Unify (and optimize) implementation of ToObject.

src/mips/builtins-mips.cc

 // 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.
 
 
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
@@ skipping 1295 matching lines @@
 
     STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
     __ GetObjectType(a2, a3, a3);
     __ Branch(&shift_arguments, ge, a3, Operand(FIRST_SPEC_OBJECT_TYPE));
 
     __ bind(&convert_to_object);
     // Enter an internal frame in order to preserve argument count.
     {
       FrameScope scope(masm, StackFrame::INTERNAL);
       __ sll(a0, a0, kSmiTagSize);  // Smi tagged.
-      __ Push(a0, a2);
-      __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
+      __ push(a0);
+      __ mov(a0, a2);
+      ToObjectStub stub(masm->isolate());
+      __ CallStub(&stub);
       __ mov(a2, v0);
 
       __ pop(a0);
       __ sra(a0, a0, kSmiTagSize);  // Un-tag.
       // Leave internal frame.
     }
 
     // Restore the function to a1, and the flag to t0.
     __ sll(at, a0, kPointerSizeLog2);
     __ addu(at, sp, at);
@@ skipping 213 matching lines @@
 
     // Check if the receiver is already a JavaScript object.
     // a0: receiver
     STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE);
     __ GetObjectType(a0, a1, a1);
     __ Branch(&push_receiver, ge, a1, Operand(FIRST_SPEC_OBJECT_TYPE));
 
     // Convert the receiver to a regular object.
     // a0: receiver
     __ bind(&call_to_object);
-    __ push(a0);
-    __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
+    ToObjectStub stub(masm->isolate());
+    __ CallStub(&stub);
     __ mov(a0, v0);  // Put object in a0 to match other paths to push_receiver.
     __ Branch(&push_receiver);
 
     __ bind(&use_global_proxy);
     __ lw(a0, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX));
     __ lw(a0, FieldMemOperand(a0, GlobalObject::kGlobalProxyOffset));
 
     // Push the receiver.
     // a0: receiver
     __ bind(&push_receiver);
@@ skipping 307 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS