From e8f66bf88ceb30383b50d1fac7a2583e3339ece0 Mon Sep 17 00:00:00 2001
From: Ludovic Henry <luhenry@openjdk.org>
Date: Sat, 15 Jul 2023 06:50:21 +0000
Subject: [PATCH] 8310949: RISC-V: Initialize UseUnalignedAccesses

Reviewed-by: rehn, vkempik, fyang
---
 src/hotspot/cpu/riscv/vm_version_riscv.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/hotspot/cpu/riscv/vm_version_riscv.cpp b/src/hotspot/cpu/riscv/vm_version_riscv.cpp
index 382e11e1de3..d9b46131d66 100644
--- a/src/hotspot/cpu/riscv/vm_version_riscv.cpp
+++ b/src/hotspot/cpu/riscv/vm_version_riscv.cpp
@@ -204,6 +204,13 @@ void VM_Version::initialize() {
     }
   }
 
+  // See JDK-8026049
+  // This machine has fast unaligned memory accesses
+  if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
+    FLAG_SET_DEFAULT(UseUnalignedAccesses,
+      unaligned_access.value() == MISALIGNED_FAST);
+  }
+
   if (UseZbb) {
     if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
       FLAG_SET_DEFAULT(UsePopCountInstruction, true);