Adds the powerpc equivalent mm_malloc.h header which is needed by xmmintrin.h...

Adds the powerpc equivalent mm_malloc.h header which is needed by
xmmintrin.h and cleans up some noisy warnings from the previous MMX
commit.

From-SVN: r251339

gcc/ChangeLog

+2017-08-24  Steven Munroe  <munroesj@gcc.gnu.org>
+
+	* config/rs6000/mm_malloc.h: New file.
+
 2017-08-24  Bin Cheng  <bin.cheng@arm.com>
 
 	PR tree-optimization/81913

gcc/config/rs6000/mm_malloc.h

+/* Copyright (C) 2004-2017 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 */

gcc/testsuite/ChangeLog

+2017-08-24  Steven Munroe  <munroesj@gcc.gnu.org>
+
+	* gcc.target/powerpc/mmx-packuswb-1.c [NO_WARN_X86_INTRINSICS]:
+	Define.  Suppress warning during tests.
+
 2017-08-24  Uros Bizjak  <ubizjak@gmail.com>
 
 	* lib/target-supports.exp: Group together target-dependant checks.

gcc/testsuite/gcc.target/powerpc/mmx-packuswb-1.c

@@ -3,6 +3,8 @@
 /* { dg-require-effective-target lp64 } */
 /* { dg-require-effective-target p8vector_hw } */
 
+#define NO_WARN_X86_INTRINSICS 1
+
 #ifndef CHECK_H
 #define CHECK_H "mmx-check.h"
 #endif