Test case showing gas usage before optimization.

test/libsolidity/semanticTests/errors/small_error_optimization.sol

@@ -0,0 +1,19 @@
+error E();
+contract A {
+	uint8[] x;
+	function f() public {
+		for (uint i = 0; i < 100; ++i)
+			x.push(uint8(i));
+		revert E();
+	}
+}
+contract B {
+	function f() public {
+		(new A()).f();
+	}
+}
+// ----
+// f() -> FAILURE, hex"92bbf6e8"
+// gas irOptimized: 274265
+// gas legacy: 310592
+// gas legacyOptimized: 273662