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

src/full-codegen/x64/full-codegen-x64.cc

Index: src/full-codegen/x64/full-codegen-x64.cc
diff --git a/src/full-codegen/x64/full-codegen-x64.cc b/src/full-codegen/x64/full-codegen-x64.cc
index 09c417a40fd1c45dd41265ac528bf1ddf6df8d8e..9e0ce635e19e2463237788b0b6e0bbbdf0a54c7d 100644
--- a/src/full-codegen/x64/full-codegen-x64.cc
+++ b/src/full-codegen/x64/full-codegen-x64.cc
@@ -971,8 +971,7 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
   __ CompareRoot(rax, Heap::kUndefinedValueRootIndex);
   __ 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);
@@ -1071,11 +1070,10 @@ void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) {
   __ Move(FieldOperand(rdx, FixedArray::OffsetOfElementAt(vector_index)),
           TypeFeedbackVector::MegamorphicSentinel(isolate()));
 
-  // rax contains the key. The receiver in rbx is the second argument to the
-  // ForInFilterStub. ForInFilter returns undefined if the receiver doesn't
+  // rax contains the key. The receiver in rbx is the second argument to
+  // ForInFilter. ForInFilter returns undefined if the receiver doesn't
   // have the key or returns the name-converted key.
-  ForInFilterStub has_stub(isolate());
-  __ CallStub(&has_stub);
+  __ Call(isolate()->builtins()->ForInFilter(), RelocInfo::CODE_TARGET);
   RestoreContext();
   PrepareForBailoutForId(stmt->FilterId(), BailoutState::TOS_REGISTER);
   __ JumpIfRoot(result_register(), Heap::kUndefinedValueRootIndex,
@@ -2937,8 +2935,7 @@ void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) {
         VisitForTypeofValue(expr->expression());
       }
       __ movp(rbx, rax);
-      TypeofStub typeof_stub(isolate());
-      __ CallStub(&typeof_stub);
+      __ Call(isolate()->builtins()->Typeof(), RelocInfo::CODE_TARGET);
       context()->Plug(rax);
       break;
     }
@@ -3306,8 +3303,7 @@ void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) {
       VisitForAccumulatorValue(expr->right());
       SetExpressionPosition(expr);
       PopOperand(rdx);
-      InstanceOfStub stub(isolate());
-      __ CallStub(&stub);
+      __ Call(isolate()->builtins()->InstanceOf(), RelocInfo::CODE_TARGET);
       PrepareForBailoutBeforeSplit(expr, false, NULL, NULL);
       __ CompareRoot(rax, Heap::kTrueValueRootIndex);
       Split(equal, if_true, if_false, fall_through);