KeyedLoadIC should have same register spec as LoadIC.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index f50e7dd2ddc5269c084f48f1506dcc00a6a3faa6..e1f39fa925c80b1f4b7055f3cbbb1a5990d56d1f 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -1856,25 +1856,15 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
 
 void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
   Label miss;
-  Register receiver;
+  Register receiver = LoadIC::ReceiverRegister();
+  Register name = LoadIC::NameRegister();
+
+  ASSERT(kind() == Code::LOAD_IC ||
+         kind() == Code::KEYED_LOAD_IC);
+
   if (kind() == Code::KEYED_LOAD_IC) {
-    // ----------- S t a t e -------------
-    //  -- lr    : return address
-    //  -- r0    : key
-    //  -- r1    : receiver
-    // -----------------------------------
-    __ cmp(r0, Operand(isolate()->factory()->prototype_string()));
+    __ cmp(name, Operand(isolate()->factory()->prototype_string()));
     __ b(ne, &miss);
-    receiver = r1;
-  } else {
-    ASSERT(kind() == Code::LOAD_IC);
-    // ----------- S t a t e -------------
-    //  -- r2    : name
-    //  -- lr    : return address
-    //  -- r0    : receiver
-    //  -- sp[0] : receiver
-    // -----------------------------------
-    receiver = r0;
   }
 
   StubCompiler::GenerateLoadFunctionPrototype(masm, receiver, r3, r4, &miss);