| /* |
| * Copyright © 2014 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: |
| * Jason Ekstrand (jason@jlekstrand.net) |
| * |
| */ |
| |
| #pragma once |
| |
| #ifndef _NIR_WORKLIST_ |
| #define _NIR_WORKLIST_ |
| |
| #include "nir.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** Represents a double-ended queue of unique blocks |
| * |
| * The worklist datastructure guarantees that eacy block is in the queue at |
| * most once. Pushing a block onto either end of the queue is a no-op if |
| * the block is already in the queue. In order for this to work, the |
| * caller must ensure that the blocks are properly indexed. |
| */ |
| typedef struct { |
| /* The total size of the worklist */ |
| unsigned size; |
| |
| /* The number of blocks currently in the worklist */ |
| unsigned count; |
| |
| /* The offset in the array of blocks at which the list starts */ |
| unsigned start; |
| |
| /* A bitset of all of the blocks currently present in the worklist */ |
| BITSET_WORD *blocks_present; |
| |
| /* The actual worklist */ |
| nir_block **blocks; |
| } nir_block_worklist; |
| |
| void nir_block_worklist_init(nir_block_worklist *w, unsigned num_blocks, |
| void *mem_ctx); |
| void nir_block_worklist_fini(nir_block_worklist *w); |
| |
| void nir_block_worklist_add_all(nir_block_worklist *w, nir_function_impl *impl); |
| |
| static inline bool |
| nir_block_worklist_is_empty(const nir_block_worklist *w) |
| { |
| return w->count == 0; |
| } |
| |
| void nir_block_worklist_push_head(nir_block_worklist *w, nir_block *block); |
| |
| nir_block *nir_block_worklist_peek_head(const nir_block_worklist *w); |
| |
| nir_block *nir_block_worklist_pop_head(nir_block_worklist *w); |
| |
| void nir_block_worklist_push_tail(nir_block_worklist *w, nir_block *block); |
| |
| nir_block *nir_block_worklist_peek_tail(const nir_block_worklist *w); |
| |
| nir_block *nir_block_worklist_pop_tail(nir_block_worklist *w); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* _NIR_WORKLIST_ */ |