Refactor elements kind conversion.

src/arm/ic-arm.cc

 // Copyright 2011 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 1229 matching lines @@
   // an IC miss that would otherwise cause a transition to the generic stub.
   ExternalReference ref =
       ExternalReference(IC_Utility(kKeyedStoreIC_Slow), masm->isolate());
   __ TailCallExternalReference(ref, 3, 1);
 }
 
 
 void KeyedStoreIC::GenerateTransitionElementsSmiToDouble(MacroAssembler* masm) {
   // ---------- S t a t e --------------
   //  -- r2     : receiver
+  //  -- r3     : target map
   //  -- lr     : return address
   // -----------------------------------
   // Must return the modified receiver in r0.
+  if (!FLAG_trace_elements_transitions) {
+    Label fail;
+    ElementsTransitionGenerator::GenerateSmiOnlyToDouble(masm, &fail);
+    __ mov(r0, r2);
+    __ Ret();
+    __ bind(&fail);
+  }
 
   __ push(r2);
   __ TailCallRuntime(Runtime::kTransitionElementsSmiToDouble, 1, 1);
 }
 
 
 void KeyedStoreIC::GenerateTransitionElementsDoubleToObject(
     MacroAssembler* masm) {
   // ---------- S t a t e --------------
   //  -- r2     : receiver
+  //  -- r3     : target map
   //  -- lr     : return address
   // -----------------------------------
   // Must return the modified receiver in r0.
+  if (!FLAG_trace_elements_transitions) {
+    Label fail;
+    ElementsTransitionGenerator::GenerateDoubleToObject(masm, &fail);
+    __ mov(r0, r2);
+    __ Ret();
+    __ bind(&fail);
+  }
 
   __ push(r2);
   __ TailCallRuntime(Runtime::kTransitionElementsDoubleToObject, 1, 1);
 }
 
 
 void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm,
                                               StrictModeFlag strict_mode) {
   // ---------- S t a t e --------------
   //  -- r0     : value
@@ skipping 413 matching lines @@
     Register reg = Assembler::GetRn(instr_at_patch);
     patcher.masm()->tst(reg, Operand(kSmiTagMask));
     patcher.EmitCondition(eq);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM