[X86] Remove unnecessary MMX declarations from Intrin.h

As discussed in PR23648 - the intrinsics _m_from_int, _m_to_int and _m_prefetch are defined in mmintrin.h and prfchwintrin.h so we don't need to in Intrin.h

Added tests for _m_from_int and _m_to_int

D11338 already added a test for _m_prefetch

Differential Revision: http://reviews.llvm.org/D12272

llvm-svn: 245975

2 files changed, 10 insertions, 3 deletions

diff --git a/clang/lib/Headers/Intrin.h b/clang/lib/Headers/Intrin.h
index 67c8a63265f..fc852dcf14b 100644
--- a/clang/lib/Headers/Intrin.h
+++ b/clang/lib/Headers/Intrin.h
@@ -49,10 +49,7 @@ extern "C" {
 #if defined(__MMX__)
 /* And the random ones that aren't in those files. */
 __m64 _m_from_float(float);
-__m64 _m_from_int(int _l);
-void _m_prefetch(void *);
 float _m_to_float(__m64);
-int _m_to_int(__m64 _M);
 #endif
 
 /* Other assorted instruction intrinsics. */
diff --git a/clang/test/CodeGen/mmx-builtins.c b/clang/test/CodeGen/mmx-builtins.c
index 346676c6b01..e9f8d8696f9 100644
--- a/clang/test/CodeGen/mmx-builtins.c
+++ b/clang/test/CodeGen/mmx-builtins.c
@@ -451,3 +451,13 @@ __m64 test89(__m64 a, __m64 b) {
   // CHECK: pcmpgtd
   return _mm_cmpgt_pi32(a, b);
 }
+
+__m64 test90(int a) {
+  // CHECK: movd
+  return _m_from_int(a);
+}
+
+int test91(__m64 a) {
+  // CHECK: movd
+  return _m_to_int(a);
+}