From 6f75fc9cd9e186858c8fcc3b31470c0bc1b2b87b Mon Sep 17 00:00:00 2001
From: Patrick Zhang <patrick@os.amperecomputing.com>
Date: Thu, 27 Feb 2025 12:54:41 +0800
Subject: [PATCH] Backport f529bf712d8946584999dfc98abea60c22c97167

Signed-off-by: Patrick Zhang <patrick@os.amperecomputing.com>
---
 src/hotspot/cpu/aarch64/vm_version_aarch64.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
index 8e3dbfd5db7..55444db3da5 100644
--- a/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
+++ b/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp
@@ -157,6 +157,9 @@ void VM_Version::initialize() {
     if (FLAG_IS_DEFAULT(OnSpinWaitInstCount)) {
       FLAG_SET_DEFAULT(OnSpinWaitInstCount, 2);
     }
+    if (FLAG_IS_DEFAULT(UseSignumIntrinsic)) {
+      FLAG_SET_DEFAULT(UseSignumIntrinsic, true);
+    }
   }
 
   // ThunderX