/* * Copyright © 2012 Intel Corporation * * 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 (including the next * paragraph) 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. * * Authors: * Eric Anholt * */ #include "brw_fs.h" #include "main/bitset.h" namespace brw { struct block_data { /** * Which variables are defined before being used in the block. * * Note that for our purposes, "defined" means unconditionally, completely * defined. */ BITSET_WORD *def; /** * Which variables are used before being defined in the block. */ BITSET_WORD *use; /** Which defs reach the entry point of the block. */ BITSET_WORD *livein; /** Which defs reach the exit point of the block. */ BITSET_WORD *liveout; }; class fs_live_variables { public: static void* operator new(size_t size, void *ctx) { void *node; node = rzalloc_size(ctx, size); assert(node != NULL); return node; } fs_live_variables(fs_visitor *v, cfg_t *cfg); ~fs_live_variables(); void setup_def_use(); void compute_live_variables(); fs_visitor *v; cfg_t *cfg; void *mem_ctx; int num_vars; int bitset_words; /** Per-basic-block information on live variables */ struct block_data *bd; }; } /* namespace brw */