[ic] Resurrect access checks for primitive and global proxy receivers.

src/ic/x64/handler-compiler-x64.cc

Index: src/ic/x64/handler-compiler-x64.cc
diff --git a/src/ic/x64/handler-compiler-x64.cc b/src/ic/x64/handler-compiler-x64.cc
index 57208f988db81f73a0651e8f621dffda927b91e0..36acccc0079bbcedad6e60a2e4427312269c69ec 100644
--- a/src/ic/x64/handler-compiler-x64.cc
+++ b/src/ic/x64/handler-compiler-x64.cc
@@ -401,6 +401,29 @@ void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(FieldType* field_type,
   }
 }
 
+void PropertyHandlerCompiler::GenerateAccessCheck(
+    Handle<WeakCell> native_context_cell, Register scratch1, Register scratch2,
+    Label* miss, bool compare_native_contexts_only) {
+  Label done;
+  // Load current native context.
+  __ movp(scratch1, NativeContextOperand());
+  // Load expected native context.
+  __ LoadWeakValue(scratch2, native_context_cell, miss);
+  __ cmpp(scratch1, scratch2);
+
+  if (!compare_native_contexts_only) {
+    __ j(equal, &done);
+
+    // Compare security tokens of current and expected native contexts.
+    __ movp(scratch1, ContextOperand(scratch1, Context::SECURITY_TOKEN_INDEX));
+    __ movp(scratch2, ContextOperand(scratch2, Context::SECURITY_TOKEN_INDEX));
+    __ cmpp(scratch1, scratch2);
+  }
+  __ j(not_equal, miss);
+
+  __ bind(&done);
+}
+
 Register PropertyHandlerCompiler::CheckPrototypes(
     Register object_reg, Register holder_reg, Register scratch1,
     Register scratch2, Handle<Name> name, Label* miss,