Add a __has_attribute macro that works much like __has_feature and __has_builtin.
llvm-svn: 116906
diff --git a/clang/test/Lexer/has_attribute.cpp b/clang/test/Lexer/has_attribute.cpp
new file mode 100644
index 0000000..9a58a30
--- /dev/null
+++ b/clang/test/Lexer/has_attribute.cpp
@@ -0,0 +1,12 @@
+// RUN: %clang_cc1 -E %s -o - | FileCheck %s
+
+// CHECK: always_inline
+#if __has_attribute(always_inline)
+int always_inline();
+#endif
+
+// CHECK: no_dummy_attribute
+#if !__has_attribute(dummy_attribute)
+int no_dummy_attribute();
+#endif
+