1 files changed, 61 insertions, 0 deletions
diff --git a/clang/lib/Headers/mm_malloc.h b/clang/lib/Headers/mm_malloc.h
new file mode 100644
index 000000000000..0ea32517aea8
--- /dev/null
+++ b/clang/lib/Headers/mm_malloc.h
@@ -0,0 +1,61 @@
+/*===---- mm_malloc.h - Allocating and Freeing Aligned Memory Blocks -------===
+ *
+ * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ * See https://llvm.org/LICENSE.txt for license information.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __MM_MALLOC_H
+#define __MM_MALLOC_H
+
+#include <stdlib.h>
+
+#ifdef _WIN32
+#include <malloc.h>
+#else
+#ifndef __cplusplus
+extern int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
+#else
+// Some systems (e.g. those with GNU libc) declare posix_memalign with an
+// exception specifier. Via an "egregious workaround" in
+// Sema::CheckEquivalentExceptionSpec, Clang accepts the following as a valid
+// redeclaration of glibc's declaration.
+extern "C" int posix_memalign(void **__memptr, size_t __alignment, size_t __size);
+#endif
+#endif
+
+#if !(defined(_WIN32) && defined(_mm_malloc))
+static __inline__ void *__attribute__((__always_inline__, __nodebug__,
+                                       __malloc__))
+_mm_malloc(size_t __size, size_t __align)
+{
+  if (__align == 1) {
+    return malloc(__size);
+  }
+
+  if (!(__align & (__align - 1)) && __align < sizeof(void *))
+    __align = sizeof(void *);
+
+  void *__mallocedMemory;
+#if defined(__MINGW32__)
+  __mallocedMemory = __mingw_aligned_malloc(__size, __align);
+#elif defined(_WIN32)
+  __mallocedMemory = _aligned_malloc(__size, __align);
+#else
+  if (posix_memalign(&__mallocedMemory, __align, __size))
+    return 0;
+#endif
+
+  return __mallocedMemory;
+}
+
+static __inline__ void __attribute__((__always_inline__, __nodebug__))
+_mm_free(void *__p)
+{
+  free(__p);
+}
+#endif
+
+#endif /* __MM_MALLOC_H */