[X86] Introduce cldemote intrinsic

Reviewers: craig.topper, zvi

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D45257

llvm-svn: 329993

1 files changed, 42 insertions, 0 deletions

diff --git a/clang/lib/Headers/cldemoteintrin.h b/clang/lib/Headers/cldemoteintrin.h
new file mode 100644
index 00000000000..1b54dd43b3a
--- /dev/null
+++ b/clang/lib/Headers/cldemoteintrin.h
@@ -0,0 +1,42 @@
+/*===---- cldemoteintrin.h - CLDEMOTE intrinsic ----------------------------===
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __X86INTRIN_H
+#error "Never use <cldemoteintrin.h> directly; include <x86intrin.h> instead."
+#endif
+
+#ifndef __CLDEMOTEINTRIN_H
+#define __CLDEMOTEINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS \
+  __attribute__((__always_inline__, __nodebug__,  __target__("cldemote")))
+
+static __inline__ void __DEFAULT_FN_ATTRS
+_cldemote(const void * __P) {
+  __builtin_ia32_cldemote(__P);
+}
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif