Avoid TLS accesses in Object::Lookup and Object::GetPrototype.

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index 24474cf6660297bb693a47730c5109672be256de..649751f92990a27838c555971d2060a5d47ddc71 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -1946,8 +1946,9 @@ Handle<Code> CallStubCompiler::CompileStringCharCodeAtCall(
                                             v0,
                                             &miss);
   ASSERT(!object.is_identical_to(holder));
-  CheckPrototypes(Handle<JSObject>(JSObject::cast(object->GetPrototype())),
-                  v0, holder, a1, a3, t0, name, &miss);
+  CheckPrototypes(
+      Handle<JSObject>(JSObject::cast(object->GetPrototype(isolate()))),
+      v0, holder, a1, a3, t0, name, &miss);
 
   Register receiver = a1;
   Register index = t1;
@@ -2026,8 +2027,9 @@ Handle<Code> CallStubCompiler::CompileStringCharAtCall(
                                             v0,
                                             &miss);
   ASSERT(!object.is_identical_to(holder));
-  CheckPrototypes(Handle<JSObject>(JSObject::cast(object->GetPrototype())),
-                  v0, holder, a1, a3, t0, name, &miss);
+  CheckPrototypes(
+      Handle<JSObject>(JSObject::cast(object->GetPrototype(isolate()))),
+      v0, holder, a1, a3, t0, name, &miss);
 
   Register receiver = v0;
   Register index = t1;
@@ -2483,7 +2485,7 @@ void CallStubCompiler::CompileHandlerFrontend(Handle<Object> object,
       GenerateDirectLoadGlobalFunctionPrototype(
           masm(), Context::STRING_FUNCTION_INDEX, a0, &miss);
       CheckPrototypes(
-          Handle<JSObject>(JSObject::cast(object->GetPrototype())),
+          Handle<JSObject>(JSObject::cast(object->GetPrototype(isolate()))),
           a0, holder, a3, a1, t0, name, &miss);
       break;
 
@@ -2498,7 +2500,7 @@ void CallStubCompiler::CompileHandlerFrontend(Handle<Object> object,
       GenerateDirectLoadGlobalFunctionPrototype(
           masm(), Context::NUMBER_FUNCTION_INDEX, a0, &miss);
       CheckPrototypes(
-          Handle<JSObject>(JSObject::cast(object->GetPrototype())),
+          Handle<JSObject>(JSObject::cast(object->GetPrototype(isolate()))),
           a0, holder, a3, a1, t0, name, &miss);
       break;
     }
@@ -2514,7 +2516,7 @@ void CallStubCompiler::CompileHandlerFrontend(Handle<Object> object,
       GenerateDirectLoadGlobalFunctionPrototype(
           masm(), Context::BOOLEAN_FUNCTION_INDEX, a0, &miss);
       CheckPrototypes(
-          Handle<JSObject>(JSObject::cast(object->GetPrototype())),
+          Handle<JSObject>(JSObject::cast(object->GetPrototype(isolate()))),
           a0, holder, a3, a1, t0, name, &miss);
       break;
     }