S390: Provide optimized support for the %GetOrdinaryHasInstance intrinsic.

Port 992ae64d

Original commit message:
    This new intrinsic is used by the desugared ES6 instanceof implementation for
    the cases when the F[@@hasInstance] property is null or undefined.

R=mvstanton@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1813873003

Cr-Commit-Position: refs/heads/master@{#34873}

src/full-codegen/s390/full-codegen-s390.cc

@@ -3222,6 +3222,12 @@ void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) {
   context()->Plug(r2);
 }
 
+void FullCodeGenerator::EmitGetOrdinaryHasInstance(CallRuntime* expr) {
+  DCHECK_EQ(0, expr->arguments()->length());
+  __ LoadNativeContextSlot(Context::ORDINARY_HAS_INSTANCE_INDEX, r2);
+  context()->Plug(r2);
+}
+
 void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) {
   DCHECK(expr->arguments()->length() == 0);
   ExternalReference debug_is_active =