From 7540fa2147ff8fc9c652ef13548f72f27e2809a8 Mon Sep 17 00:00:00 2001
From: Amit Kumar <amitkumar@openjdk.org>
Date: Tue, 19 Nov 2024 10:16:22 +0000
Subject: [PATCH] 8343884: [s390x]  Disallow OptoScheduling

Reviewed-by: lucy
---
 src/hotspot/cpu/s390/vm_version_s390.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/hotspot/cpu/s390/vm_version_s390.cpp b/src/hotspot/cpu/s390/vm_version_s390.cpp
index 8ab5affd309..ee3f97f26ef 100644
--- a/src/hotspot/cpu/s390/vm_version_s390.cpp
+++ b/src/hotspot/cpu/s390/vm_version_s390.cpp
@@ -320,6 +320,12 @@ void VM_Version::initialize() {
   if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
     FLAG_SET_DEFAULT(UseUnalignedAccesses, true);
   }
+
+  // The OptoScheduling information is not maintained in s390.ad.
+  if (OptoScheduling) {
+    warning("OptoScheduling is not supported on this CPU.");
+    FLAG_SET_DEFAULT(OptoScheduling, false);
+  }
 }