adding XFAIL and XTARGET to those that require Darwin host

llvm-svn: 132257
diff --git a/debuginfo-tests/unused-boolean-arg.ll b/debuginfo-tests/unused-boolean-arg.ll
index 81fc8a7..77c31f5 100644
--- a/debuginfo-tests/unused-boolean-arg.ll
+++ b/debuginfo-tests/unused-boolean-arg.ll
@@ -2,6 +2,8 @@
 ; RUN: %clang -arch x86_64 -mllvm -fast-isel=false  %s -c -o %t.o
 ; RUN: %clang -arch x86_64 %t.o -o %t.out
 ; RUN: %test_debuginfo %s %t.out
+; XFAIL: *
+; XTARGET: darwin
 ; Radar 9422775
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"