1 files changed, 40 insertions, 0 deletions
diff --git a/test/Sema/implicit-intel-builtin-decl.c b/test/Sema/implicit-intel-builtin-decl.c
new file mode 100644
index 000000000000..e588a4b8866e
--- /dev/null
+++ b/test/Sema/implicit-intel-builtin-decl.c
@@ -0,0 +1,40 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-feature +sse2 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -target-feature +sse2 -fsyntax-only -verify %s -x c++
+
+void f() {
+  (void)_mm_getcsr(); // expected-warning{{implicitly declaring library function '_mm_getcsr'}} \
+  // expected-note{{include the header <xmmintrin.h> or explicitly provide a declaration for '_mm_getcsr'}}
+  _mm_setcsr(1); // expected-warning{{implicitly declaring library function '_mm_setcsr'}} \
+  // expected-note{{include the header <xmmintrin.h> or explicitly provide a declaration for '_mm_setcsr'}}
+  _mm_sfence(); // expected-warning{{implicitly declaring library function '_mm_sfence'}} \
+  // expected-note{{include the header <xmmintrin.h> or explicitly provide a declaration for '_mm_sfence'}}
+
+  _mm_clflush((void*)0); // expected-warning{{implicitly declaring library function '_mm_clflush'}} \
+  // expected-note{{include the header <emmintrin.h> or explicitly provide a declaration for '_mm_clflush'}}
+  _mm_lfence(); // expected-warning{{implicitly declaring library function '_mm_lfence'}} \
+  // expected-note{{include the header <emmintrin.h> or explicitly provide a declaration for '_mm_lfence'}}
+  _mm_mfence(); // expected-warning{{implicitly declaring library function '_mm_mfence'}} \
+  // expected-note{{include the header <emmintrin.h> or explicitly provide a declaration for '_mm_mfence'}}
+  _mm_pause(); // expected-warning{{implicitly declaring library function '_mm_pause'}} \
+  // expected-note{{include the header <emmintrin.h> or explicitly provide a declaration for '_mm_pause'}}
+}
+
+unsigned int _mm_getcsr();
+void _mm_setcsr(unsigned int);
+void _mm_sfence();
+
+void _mm_clflush(void const *);
+void _mm_lfence();
+void _mm_mfence();
+void _mm_pause();
+
+void g() {
+  (void)_mm_getcsr();
+  _mm_setcsr(1);
+  _mm_sfence();
+
+  _mm_clflush((void*)0);
+  _mm_lfence();
+  _mm_mfence();
+  _mm_pause();
+}