src/gallium/drivers/r600/sb/sb_expr.h

   1 /*
   2  * Copyright 2013 Vadim Girlin <vadimgirlin@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Vadim Girlin
  25  */
  26
  27 #ifndef SB_EXPR_H_
  28 #define SB_EXPR_H_
  29
  30 namespace r600_sb {
  31
  32 inline float float_clamp(float v) {
  33         return v < 0.0f ? 0.0f : (v > 1.0f ? 1.0f : v);
  34 }
  35
  36 value* get_select_value_for_em(shader &sh, value *em);
  37
  38 void convert_predset_to_set(shader &sh, alu_node *a);
  39 unsigned invert_setcc_condition(unsigned cc, bool &swap_args);
  40 unsigned get_setcc_op(unsigned cc, unsigned cmp_type, bool int_dst);
  41 unsigned get_predsetcc_op(unsigned cc, unsigned cmp_type);
  42 unsigned get_killcc_op(unsigned cc, unsigned cmp_type);
  43 unsigned get_cndcc_op(unsigned cc, unsigned cmp_type);
  44
  45 void convert_to_mov(alu_node &n, value *src,
  46                     bool neg = false, bool abs = false);
  47
  48 class expr_handler {
  49
  50    shader &sh;
  51    value_table &vt;
  52
  53 public:
  54
  55    expr_handler(shader &sh);
  56
  57    bool equal(value *l, value *r);
  58    bool defs_equal(value *l, value *r);
  59    bool args_equal(const vvec &l, const vvec &r);
  60    bool ops_equal(const alu_node *l, const alu_node *r);
  61    bool ivars_equal(value *l, value *r);
  62
  63    value* get_const(const literal &l);
  64
  65    bool try_fold(value *v);
  66    bool try_fold(node *n);
  67
  68    bool fold(node &n);
  69    bool fold(container_node &n);
  70    bool fold(alu_node &n);
  71    bool fold(fetch_node &n);
  72    bool fold(cf_node &n);
  73
  74    bool fold_setcc(alu_node &n);
  75
  76    bool fold_alu_op1(alu_node &n);
  77    bool fold_alu_op2(alu_node &n);
  78    bool fold_alu_op3(alu_node &n);
  79
  80    bool fold_mul_add(alu_node *n);
  81    bool eval_const_op(unsigned op, literal &r, literal cv0, literal cv1);
  82    bool fold_assoc(alu_node *n);
  83
  84    static void apply_alu_src_mod(const bc_alu &bc, unsigned src, literal &v);
  85    static void apply_alu_dst_mod(const bc_alu &bc, literal &v);
  86
  87    void assign_source(value *dst, value *src);
  88
  89    static bool evaluate_condition(unsigned alu_cnd_flags, literal s1,
  90                                   literal s2);
  91 };
  92
  93 } // namespace r600_sb
  94
  95 #endif /* SB_EXPR_H_ */