1bf215546Sopenharmony_ci/************************************************************************** 2bf215546Sopenharmony_ci * 3bf215546Sopenharmony_ci * Copyright 2015 VMware, Inc. 4bf215546Sopenharmony_ci * All Rights Reserved. 5bf215546Sopenharmony_ci * 6bf215546Sopenharmony_ci * Permission is hereby granted, free of charge, to any person obtaining a 7bf215546Sopenharmony_ci * copy of this software and associated documentation files (the 8bf215546Sopenharmony_ci * "Software"), to deal in the Software without restriction, including 9bf215546Sopenharmony_ci * without limitation the rights to use, copy, modify, merge, publish, 10bf215546Sopenharmony_ci * distribute, sub license, and/or sell copies of the Software, and to 11bf215546Sopenharmony_ci * permit persons to whom the Software is furnished to do so, subject to 12bf215546Sopenharmony_ci * the following conditions: 13bf215546Sopenharmony_ci * 14bf215546Sopenharmony_ci * The above copyright notice and this permission notice (including the 15bf215546Sopenharmony_ci * next paragraph) shall be included in all copies or substantial portions 16bf215546Sopenharmony_ci * of the Software. 17bf215546Sopenharmony_ci * 18bf215546Sopenharmony_ci * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19bf215546Sopenharmony_ci * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20bf215546Sopenharmony_ci * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21bf215546Sopenharmony_ci * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 22bf215546Sopenharmony_ci * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23bf215546Sopenharmony_ci * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24bf215546Sopenharmony_ci * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25bf215546Sopenharmony_ci * 26bf215546Sopenharmony_ci **************************************************************************/ 27bf215546Sopenharmony_ci 28bf215546Sopenharmony_ci#ifndef NIR_VLA_H 29bf215546Sopenharmony_ci#define NIR_VLA_H 30bf215546Sopenharmony_ci 31bf215546Sopenharmony_ci#include "c99_alloca.h" 32bf215546Sopenharmony_ci 33bf215546Sopenharmony_ci 34bf215546Sopenharmony_ci/* Declare a variable length array, with no initialization */ 35bf215546Sopenharmony_ci#define NIR_VLA(_type, _name, _length) \ 36bf215546Sopenharmony_ci _type *_name = alloca((_length) * sizeof *_name) 37bf215546Sopenharmony_ci 38bf215546Sopenharmony_ci 39bf215546Sopenharmony_ci/* Declare a variable length array, and initialize it with the given byte. 40bf215546Sopenharmony_ci * 41bf215546Sopenharmony_ci * _length is evaluated twice, so expressions with side-effects must be 42bf215546Sopenharmony_ci * avoided. 43bf215546Sopenharmony_ci */ 44bf215546Sopenharmony_ci#define NIR_VLA_FILL(_type, _name, _length, _byte) \ 45bf215546Sopenharmony_ci _type *_name = memset(alloca((_length) * sizeof *_name), _byte, (_length) * sizeof *_name) 46bf215546Sopenharmony_ci 47bf215546Sopenharmony_ci 48bf215546Sopenharmony_ci/* Declare a variable length array, and zero it. 49bf215546Sopenharmony_ci * 50bf215546Sopenharmony_ci * Just like NIR_VLA_FILL, _length is evaluated twice, so expressions with 51bf215546Sopenharmony_ci * side-effects must be avoided. 52bf215546Sopenharmony_ci */ 53bf215546Sopenharmony_ci#define NIR_VLA_ZERO(_type, _name, _length) \ 54bf215546Sopenharmony_ci NIR_VLA_FILL(_type, _name, _length, 0) 55bf215546Sopenharmony_ci 56bf215546Sopenharmony_ci#endif /* NIR_VLA_H */ 57