[mono][llvm] Added a null-check for 2-dim array access

src/mono/mono/mini/method-to-ir.c

@@ -4322,7 +4322,7 @@ mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, Mono
 #endif
 
 	/* range checking */
-	MONO_EMIT_NEW_LOAD_MEMBASE (cfg, bounds_reg,
+	MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, bounds_reg,
 				       arr->dreg, MONO_STRUCT_OFFSET (MonoArray, bounds));
 
 	MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI4_MEMBASE, low1_reg,

src/tests/Regressions/coreclr/GitHub_79022/test79022.cs

@@ -0,0 +1,38 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System;
+using System.Runtime.CompilerServices;
+
+class Program
+{
+    // This is a regression test for https://github.com/dotnet/runtime/issues/79022
+    static ulong[,] s_1;
+
+    [MethodImpl(MethodImplOptions.NoInlining)]
+    static void Test()
+    {
+        try
+        {
+            ushort vr10 = default(ushort);
+            bool vr11 = 0 < ((s_1[0, 0] * (uint)(0 / vr10)) % 1);
+        }
+        catch 
+        {
+        }
+    }
+
+    public static int Main()
+    {
+        try
+        {
+            Test();
+        }
+        catch
+        {
+            return -1;
+        }
+
+        return 100;
+    }
+}

src/tests/Regressions/coreclr/GitHub_79022/test79022.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <CLRTestPriority>1</CLRTestPriority>
+    <WarningsNotAsErrors>CS0649</WarningsNotAsErrors>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="test79022.cs" />
+  </ItemGroup>
+</Project>