X87: [es6] Faster implementation of OrdinaryHasInstance.

src/x87/builtins-x87.cc

Index: src/x87/builtins-x87.cc
diff --git a/src/x87/builtins-x87.cc b/src/x87/builtins-x87.cc
index 9052e233671980936c765770acee66e7f4cc28df..f4924ea9a0ec57754577dbc2fa0aa130088b4c74 100644
--- a/src/x87/builtins-x87.cc
+++ b/src/x87/builtins-x87.cc
@@ -957,6 +957,28 @@ void Builtins::Generate_DatePrototype_GetField(MacroAssembler* masm,
   }
 }
 
+// static
+void Builtins::Generate_FunctionHasInstance(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- eax    : argc
+  //  -- esp[0] : return address
+  //  -- esp[4] : first argument (left-hand side)
+  //  -- esp[8] : receiver (right-hand side)
+  // -----------------------------------
+
+  {
+    FrameScope scope(masm, StackFrame::INTERNAL);
+    __ mov(InstanceOfDescriptor::LeftRegister(),
+           Operand(ebp, 2 * kPointerSize));  // Load left-hand side.
+    __ mov(InstanceOfDescriptor::RightRegister(),
+           Operand(ebp, 3 * kPointerSize));  // Load right-hand side.
+    InstanceOfStub stub(masm->isolate(), true);
+    __ CallStub(&stub);
+  }
+
+  // Pop the argument and the receiver.
+  __ ret(2 * kPointerSize);
+}
 
 // static
 void Builtins::Generate_FunctionPrototypeApply(MacroAssembler* masm) {
@@ -1145,7 +1167,6 @@ void Builtins::Generate_ReflectApply(MacroAssembler* masm) {
   }
 }
 
-
 void Builtins::Generate_ReflectConstruct(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- eax     : argc