Tests and changelog

test/libyul/yulOptimizerTests/unusedFunctionParameterPruner/nested_function_name_collision.yul

@@ -0,0 +1,52 @@
+// Test case where the name `g` occurs at two different places. Test to see if name-collision can
+// cause issues.
+{
+    sstore(h(1), 0)
+    sstore(f(1), 0)
+
+    function f(c) -> u
+    {
+        u := g(c)
+        function g(d) -> w
+        {
+            w := 13
+            sstore(0, w)
+        }
+    }
+
+    function h(c) -> u
+    {
+        u := g(c)
+        function g(d) -> w
+        {
+            w := 13
+            sstore(0, w)
+        }
+    }
+
+}
+// ----
+// step: unusedFunctionParameterPruner
+//
+// {
+//     sstore(h(1), 0)
+//     sstore(f(1), 0)
+//     function g() -> w
+//     {
+//         w := 13
+//         sstore(0, 13)
+//     }
+//     function g_1(d_3) -> w_4
+//     { w_4 := g() }
+//     function f(c) -> u
+//     { u := g_1(c) }
+//     function g_3() -> w_5
+//     {
+//         w_5 := 13
+//         sstore(0, 13)
+//     }
+//     function g_3_2(d_4_5) -> w_5_6
+//     { w_5_6 := g_3() }
+//     function h(c_1) -> u_2
+//     { u_2 := g_3_2(c_1) }
+// }