Revert r5174.

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
===================================================================
--- src/x64/stub-cache-x64.cc	(revision 5176)
+++ src/x64/stub-cache-x64.cc	(working copy)
@@ -820,11 +820,9 @@
 }
 
 
-Object* CallStubCompiler::GenerateMissBranch() {
-  Object* obj = StubCache::ComputeCallMiss(arguments().immediate(), kind_);
-  if (obj->IsFailure()) return obj;
-  __ Jump(Handle<Code>(Code::cast(obj)), RelocInfo::CODE_TARGET);
-  return obj;
+void CallStubCompiler::GenerateMissBranch() {
+  Handle<Code> ic = ComputeCallMiss(arguments().immediate(), kind_);
+  __ Jump(ic, RelocInfo::CODE_TARGET);
 }
 
 
@@ -977,8 +975,7 @@
 
   // Handle call cache miss.
   __ bind(&miss_in_smi_check);
-  Object* obj = GenerateMissBranch();
-  if (obj->IsFailure()) return obj;
+  GenerateMissBranch();
 
   // Return the generated code.
   return GetCode(function);
@@ -1032,8 +1029,7 @@
 
   // Handle call cache miss.
   __ bind(&miss);
-  Object* obj = GenerateMissBranch();
-  if (obj->IsFailure()) return obj;
+  GenerateMissBranch();
 
   // Return the generated code.
   return GetCode(FIELD, name);
@@ -1190,9 +1186,9 @@
   }
 
   __ bind(&miss);
-  Object* obj = GenerateMissBranch();
-  if (obj->IsFailure()) return obj;
 
+  GenerateMissBranch();
+
   // Return the generated code.
   return GetCode(function);
 }
@@ -1274,9 +1270,9 @@
                                argc + 1,
                                1);
   __ bind(&miss);
-  Object* obj = GenerateMissBranch();
-  if (obj->IsFailure()) return obj;
 
+  GenerateMissBranch();
+
   // Return the generated code.
   return GetCode(function);
 }
@@ -1361,8 +1357,7 @@
 
   // Handle load cache miss.
   __ bind(&miss);
-  Object* obj = GenerateMissBranch();
-  if (obj->IsFailure()) return obj;
+  GenerateMissBranch();
 
   // Return the generated code.
   return GetCode(INTERCEPTOR, name);
@@ -1447,8 +1442,7 @@
   // Handle call cache miss.
   __ bind(&miss);
   __ IncrementCounter(&Counters::call_global_inline_miss, 1);
-  Object* obj = GenerateMissBranch();
-  if (obj->IsFailure()) return obj;
+  GenerateMissBranch();
 
   // Return the generated code.
   return GetCode(NORMAL, name);