Check in LLVM r95781.
diff --git a/test/Sema/builtin-prefetch.c b/test/Sema/builtin-prefetch.c
new file mode 100644
index 0000000..4f09da6
--- /dev/null
+++ b/test/Sema/builtin-prefetch.c
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+void foo() {
+ int a;
+ __builtin_prefetch(&a);
+ __builtin_prefetch(&a, 1);
+ __builtin_prefetch(&a, 1, 2);
+ __builtin_prefetch(&a, 1, 9, 3); // expected-error{{too many arguments to function}}
+ __builtin_prefetch(&a, "hello", 2); // expected-error{{argument to __builtin_prefetch must be of integer type}}
+ __builtin_prefetch(&a, a, 2); // expected-error{{argument to __builtin_prefetch must be a constant integer}}
+ __builtin_prefetch(&a, 2); // expected-error{{argument should be a value from 0 to 1}}
+ __builtin_prefetch(&a, 0, 4); // expected-error{{argument should be a value from 0 to 3}}
+ __builtin_prefetch(&a, -1, 4); // expected-error{{argument should be a value from 0 to 1}}
+}