Merge pull request #2697 from gottesmm/disable_static_stdlib_driver_test_when_lto_is_enabled

Disable this test when lto is enabled.

Author: gottesmm

test/Driver/static-stdlib.swift

@@ -1,5 +1,6 @@
 // Statically link a "hello world" program
 // XFAIL: linux
+// XFAIL: lto
 // REQUIRES: static_stdlib
 print("hello world!")
 // RUN: rm -rf %t && mkdir %t

test/lit.site.cfg.in

@@ -26,6 +26,11 @@ if "@SWIFT_ASAN_BUILD@" == "TRUE":
 else:
     config.available_features.add('no_asan')
 
+if '@SWIFT_ENABLE_LTO@' == 'TRUE':
+    config.available_features.add('lto')
+else:
+    config.available_features.add('no_lto')
+
 if "@LLVM_ENABLE_ASSERTIONS@" == "TRUE":
     config.available_features.add('asserts')
 else: