Add another type checker test for which we're already quite fast.

Author: rudkx

validation-test/Sema/type_checker_perf/fast/rdar32221800.swift

@@ -0,0 +1,11 @@
+// RUN: %target-typecheck-verify-swift -solver-expression-time-threshold=1 -swift-version 5 -solver-disable-shrink -disable-constraint-solver-performance-hacks -solver-enable-operator-designated-types
+// REQUIRES: tools-release,no_asserts
+
+func test(header_field_mark: Bool?, header_value_mark: Bool?,
+  url_mark: Bool?, body_mark: Bool?, status_mark: Bool?) {
+  assert(((header_field_mark != nil ? 1 : 0) +
+      (header_value_mark != nil ? 1 : 0) +
+      (url_mark != nil ? 1 : 0)  +
+      (body_mark != nil ? 1 : 0) +
+      (status_mark != nil ? 1 : 0)) <= 1)
+}