| /* |
| * Copyright © 2014 Connor Abbott |
| * |
| * 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. |
| */ |
| |
| #ifndef NIR_INSTR_SET_H |
| #define NIR_INSTR_SET_H |
| |
| #include "nir.h" |
| |
| /** |
| * This file defines functions for creating, destroying, and manipulating an |
| * "instruction set," which is an abstraction for finding duplicate |
| * instructions using a hash set. Note that the question of whether an |
| * instruction is actually a duplicate (e.g. whether it has any side effects) |
| * is handled transparently. The user can pass any instruction to |
| * nir_instr_set_add_or_rewrite() and nir_instr_set_remove(), and if the |
| * instruction isn't safe to rewrite or isn't supported, it's silently |
| * removed. |
| */ |
| |
| /*@{*/ |
| |
| /** Creates an instruction set, using a given ralloc mem_ctx */ |
| struct set *nir_instr_set_create(void *mem_ctx); |
| |
| /** Destroys an instruction set. */ |
| void nir_instr_set_destroy(struct set *instr_set); |
| |
| /** |
| * Adds an instruction to an instruction set if it doesn't exist, or if it |
| * does already exist, rewrites all uses of it to point to the other |
| * already-inserted instruction. Returns 'true' if the uses of the instruction |
| * were rewritten. |
| */ |
| bool nir_instr_set_add_or_rewrite(struct set *instr_set, nir_instr *instr); |
| |
| /** |
| * Removes an instruction from an instruction set, so that other instructions |
| * won't be merged with it. |
| */ |
| void nir_instr_set_remove(struct set *instr_set, nir_instr *instr); |
| |
| /*@}*/ |
| |
| #endif /* NIR_INSTR_SET_H */ |