gcc/config/rs6000/mm_malloc.h

/* Copyright (C) 2004-2018 Free Software Foundation, Inc.

   This file is part of GCC.

   GCC is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   GCC is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   Under Section 7 of GPL version 3, you are granted additional
   permissions described in the GCC Runtime Library Exception, version
   3.1, as published by the Free Software Foundation.

   You should have received a copy of the GNU General Public License and
   a copy of the GCC Runtime Library Exception along with this program;
   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef _MM_MALLOC_H_INCLUDED
#define _MM_MALLOC_H_INCLUDED

#include <stdlib.h>

/* We can't depend on <stdlib.h> since the prototype of posix_memalign
   may not be visible.  */
#ifndef __cplusplus
extern int posix_memalign (void **, size_t, size_t);
#else
extern "C" int posix_memalign (void **, size_t, size_t) throw ();
#endif

static __inline void *
_mm_malloc (size_t size, size_t alignment)
{
  /* PowerPC64 ELF V2 ABI requires quadword alignment.  */
  size_t vec_align = sizeof (__vector float);
  /* Linux GLIBC malloc alignment is at least 2 X ptr size.  */
  size_t malloc_align = (sizeof (void *) + sizeof (void *));
  void *ptr;

  if (alignment == malloc_align && alignment == vec_align)
    return malloc (size);
  if (alignment < vec_align)
    alignment = vec_align;
  if (posix_memalign (&ptr, alignment, size) == 0)
    return ptr;
  else
    return NULL;
}

static __inline void
_mm_free (void * ptr)
{
  free (ptr);
}

#endif /* _MM_MALLOC_H_INCLUDED */