Revert "Create a RegisterSpec class inside of the IC that provides:"

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index e3c8c148ab53b55274a71ec048ab3603e579fdb0..8342f9f7ea1d7c64a5fc3ad7f395dd6dd7f0c215 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -539,14 +539,9 @@ Handle<Code> CreateAllocationSiteStub::GenerateCode() {
 template <>
 HValue* CodeStubGraphBuilder<KeyedLoadFastElementStub>::BuildCodeStub() {
   HInstruction* load = BuildUncheckedMonomorphicElementAccess(
-      GetParameter(KeyedLoadIC::kReceiverIndex),
-      GetParameter(KeyedLoadIC::kNameIndex),
-      NULL,
-      casted_stub()->is_js_array(),
-      casted_stub()->elements_kind(),
-      LOAD,
-      NEVER_RETURN_HOLE,
-      STANDARD_STORE);
+      GetParameter(0), GetParameter(1), NULL,
+      casted_stub()->is_js_array(), casted_stub()->elements_kind(),
+      LOAD, NEVER_RETURN_HOLE, STANDARD_STORE);
   return load;
 }
 
@@ -1376,8 +1371,8 @@ Handle<Code> FastNewContextStub::GenerateCode() {
 
 template<>
 HValue* CodeStubGraphBuilder<KeyedLoadDictionaryElementStub>::BuildCodeStub() {
-  HValue* receiver = GetParameter(KeyedLoadIC::kReceiverIndex);
-  HValue* key = GetParameter(KeyedLoadIC::kNameIndex);
+  HValue* receiver = GetParameter(0);
+  HValue* key = GetParameter(1);
 
   Add<HCheckSmi>(key);
 
@@ -1509,8 +1504,8 @@ void CodeStubGraphBuilder<
 
 
 HValue* CodeStubGraphBuilder<KeyedLoadGenericElementStub>::BuildCodeStub() {
-  HValue* receiver = GetParameter(KeyedLoadIC::kReceiverIndex);
-  HValue* key = GetParameter(KeyedLoadIC::kNameIndex);
+  HValue* receiver = GetParameter(0);
+  HValue* key = GetParameter(1);
 
   // Split into a smi/integer case and unique string case.
   HIfContinuation index_name_split_continuation(graph()->CreateBasicBlock(),