Add StackTests.il test case.

ICSharpCode.Decompiler.Tests/CorrectnessTestRunner.cs

@@ -220,6 +220,12 @@ namespace ICSharpCode.Decompiler.Tests
 			RunIL("Jmp.il");
 		}
 
+		[Test]
+		public void StackTests()
+		{
+			RunIL("StackTests.il");
+		}
+
 		[Test]
 		public void StackTypes([Values(false, true)] bool force32Bit)
 		{

ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -51,6 +51,7 @@
 
   <ItemGroup>
     <None Include="TestCases\Correctness\Jmp.il" />
+    <None Include="TestCases\Correctness\StackTests.il" />
     <None Include="TestCases\Correctness\StackTypes.il" />
     <None Include="TestCases\Correctness\Uninit.vb" />
     <None Include="TestCases\ILPretty\FSharpLoops.fs" />