[turbofan] JSGenericLowering mostly uses builtins instead of code stubs now

src/full-codegen/x87/full-codegen-x87.cc

Index: src/full-codegen/x87/full-codegen-x87.cc
diff --git a/src/full-codegen/x87/full-codegen-x87.cc b/src/full-codegen/x87/full-codegen-x87.cc
index 264f288f8837f83e2342f6f6151cd33d4ea0afdc..317468fc8e63c276929db93e363ff7cc9ce9c4dc 100644
--- a/src/full-codegen/x87/full-codegen-x87.cc
+++ b/src/full-codegen/x87/full-codegen-x87.cc
@@ -947,8 +947,7 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
   __ cmp(eax, isolate()->factory()->null_value());
   __ j(equal, &exit);
   __ bind(&convert);
-  ToObjectStub stub(isolate());
-  __ CallStub(&stub);
+  __ Call(isolate()->builtins()->ToObject(), RelocInfo::CODE_TARGET);
   RestoreContext();
   __ bind(&done_convert);
   PrepareForBailoutForId(stmt->ToObjectId(), BailoutState::TOS_REGISTER);
@@ -1037,10 +1036,9 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
          Immediate(TypeFeedbackVector::MegamorphicSentinel(isolate())));
 
   // eax contains the key.  The receiver in ebx is the second argument to the
-  // ForInFilterStub.  ForInFilter returns undefined if the receiver doesn't
+  // ForInFilter.  ForInFilter returns undefined if the receiver doesn't
   // have the key or returns the name-converted key.
-  ForInFilterStub filter_stub(isolate());
-  __ CallStub(&filter_stub);
+  __ Call(isolate()->builtins()->ForInFilter(), RelocInfo::CODE_TARGET);
   RestoreContext();
   PrepareForBailoutForId(stmt->FilterId(), BailoutState::TOS_REGISTER);
   __ JumpIfRoot(result_register(), Heap::kUndefinedValueRootIndex,
@@ -2938,8 +2936,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
         VisitForTypeofValue(expr->expression());
       }
       __ mov(ebx, eax);
-      TypeofStub typeof_stub(isolate());
-      __ CallStub(&typeof_stub);
+      __ Call(isolate()->builtins()->Typeof(), RelocInfo::CODE_TARGET);
       context()->Plug(eax);
       break;
     }
@@ -3309,8 +3306,7 @@ void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) {
       VisitForAccumulatorValue(expr->right());
       SetExpressionPosition(expr);
       PopOperand(edx);
-      InstanceOfStub stub(isolate());
-      __ CallStub(&stub);
+      __ Call(isolate()->builtins()->InstanceOf(), RelocInfo::CODE_TARGET);
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ cmp(eax, isolate()->factory()->true_value());
       Split(equal, if_true, if_false, fall_through);