From fc1ec9876c84cfdb9959433978117cee54cc75a2 Mon Sep 17 00:00:00 2001
From: Alan Hayward <alan.hayward@arm.com>
Date: Tue, 7 Jul 2026 15:04:26 +0100
Subject: [PATCH] Arm64: Only call checkRMWRegisters for RMW intrinsics

Fixes #130247
---
 src/coreclr/jit/hwintrinsiccodegenarm64.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/coreclr/jit/hwintrinsiccodegenarm64.cpp b/src/coreclr/jit/hwintrinsiccodegenarm64.cpp
index 97d97faee915dc..85d24554e9336c 100644
--- a/src/coreclr/jit/hwintrinsiccodegenarm64.cpp
+++ b/src/coreclr/jit/hwintrinsiccodegenarm64.cpp
@@ -360,7 +360,10 @@ void CodeGen::genEmbeddedMaskedHWIntrinsic(GenTreeHWIntrinsic* cndSelNode, regNu
     insScalableOpts sopt     = INS_SCALABLE_OPTS_NONE;
 
 #ifdef DEBUG
-    checkRMWRegisters(intrinEmbMask, targetReg);
+    if (isRMW)
+    {
+        checkRMWRegisters(intrinEmbMask, targetReg);
+    }
 #endif
 
     // Setup instruction options and handle special cases.