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  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_ */
  96.