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-rw-r--r--clang/lib/Headers/prfchwintrin.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Headers/prfchwintrin.h b/clang/lib/Headers/prfchwintrin.h
index 2d529c66349..9825bd8c970 100644
--- a/clang/lib/Headers/prfchwintrin.h
+++ b/clang/lib/Headers/prfchwintrin.h
@@ -25,6 +25,9 @@
#error "Never use <prfchwintrin.h> directly; include <x86intrin.h> or <mm3dnow.h> instead."
#endif
+#ifndef __PRFCHWINTRIN_H
+#define __PRFCHWINTRIN_H
+
#if defined(__PRFCHW__) || defined(__3dNOW__)
static __inline__ void __attribute__((__always_inline__, __nodebug__))
_m_prefetchw(void *__P)
@@ -32,3 +35,5 @@ _m_prefetchw(void *__P)
__builtin_prefetch (__P, 1, 3 /* _MM_HINT_T0 */);
}
#endif
+
+#endif /* __PRFCHWINTRIN_H */
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