src/gallium/drivers/r600/sfn/sfn_value.h

   1 /* -*- mesa-c++  -*-
   2  *
   3  * Copyright (c) 2018 Collabora LTD
   4  *
   5  * Author: Gert Wollny <gert.wollny@collabora.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * on the rights to use, copy, modify, merge, publish, distribute, sub
  11  * license, and/or sell copies of the Software, and to permit persons to whom
  12  * the Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27 #ifndef SFN_VALUE_H
  28 #define SFN_VALUE_H
  29
  30 #include "sfn_alu_defines.h"
  31 #include "nir.h"
  32
  33 #include <memory>
  34 #include <set>
  35 #include <bitset>
  36 #include <iostream>
  37
  38 namespace r600 {
  39
  40 class Value {
  41 public:
  42    using Pointer=std::shared_ptr<Value>;
  43
  44    struct PrintFlags {
  45       PrintFlags():index_mode(0),
  46          flags(0)
  47       {
  48       }
  49       PrintFlags(int im, int f):index_mode(im),
  50          flags(f)
  51       {
  52       }
  53       int index_mode;
  54       int flags;
  55       static const int is_rel = 1;
  56       static const int has_abs = 2;
  57       static const int has_neg = 4;
  58       static const int literal_is_float = 8;
  59       static const int index_ar = 16;
  60       static const int index_loopidx = 32;
  61    };
  62
  63    enum Type {
  64       gpr,
  65       kconst,
  66       literal,
  67       cinline,
  68       lds_direct,
  69       gpr_vector,
  70       gpr_array_value,
  71       unknown
  72    };
  73
  74    static const char *component_names;
  75
  76    using LiteralFlags=std::bitset<4>;
  77
  78    Value();
  79
  80    Value(Type type);
  81
  82    virtual ~Value(){}
  83
  84    Type type() const;
  85    virtual uint32_t sel() const = 0;
  86    uint32_t chan() const {return m_chan;}
  87
  88    void set_chan(uint32_t chan);
  89    void print(std::ostream& os, const PrintFlags& flags) const;
  90
  91    void print(std::ostream& os) const;
  92
  93    bool operator < (const Value& lhs) const;
  94
  95    static Value::Pointer zero;
  96    static Value::Pointer one_f;
  97    static Value::Pointer zero_dot_5;
  98    static Value::Pointer one_i;
  99
 100 protected:
 101    Value(Type type, uint32_t chan);
 102
 103 private:
 104    virtual void do_print(std::ostream& os) const = 0;
 105    virtual void do_print(std::ostream& os, const PrintFlags& flags) const;
 106
 107    virtual bool is_equal_to(const Value& other) const = 0;
 108
 109    Type m_type;
 110    uint32_t m_chan;
 111
 112    friend bool operator == (const Value& lhs, const Value& rhs);
 113 };
 114
 115
 116 inline std::ostream& operator << (std::ostream& os, const Value& v)
 117 {
 118    v.print(os);
 119    return os;
 120 }
 121
 122
 123 inline bool operator == (const Value& lhs, const Value& rhs)
 124 {
 125    if (lhs.type() == rhs.type())
 126       return lhs.is_equal_to(rhs);
 127    return false;
 128 }
 129
 130 inline bool operator != (const Value& lhs, const Value& rhs)
 131 {
 132    return !(lhs == rhs);
 133 }
 134
 135 using PValue=Value::Pointer;
 136
 137 struct value_less {
 138    inline bool operator () (PValue lhs, PValue rhs) const {
 139       return *lhs < *rhs;
 140    }
 141 };
 142
 143 using ValueSet = std::set<PValue, value_less>;
 144
 145
 146 class LiteralValue: public Value {
 147 public:
 148    LiteralValue(float value, uint32_t chan= 0);
 149    LiteralValue(uint32_t value, uint32_t chan= 0);
 150    LiteralValue(int value, uint32_t chan= 0);
 151    uint32_t sel() const override final;
 152    uint32_t value() const;
 153    float value_float() const;
 154 private:
 155    void do_print(std::ostream& os) const override;
 156    void do_print(std::ostream& os, const PrintFlags& flags) const override;
 157    bool is_equal_to(const Value& other) const override;
 158    union {
 159       uint32_t u;
 160       float f;
 161    } m_value;
 162 };
 163
 164 class SpecialValue: public Value {
 165 protected:
 166    SpecialValue(Type type, int value, int chan);
 167    uint32_t sel() const override final;
 168 private:
 169    void do_print(std::ostream& os) const override;
 170    AluInlineConstants m_value;
 171 };
 172
 173 class InlineConstValue: public SpecialValue {
 174 public:
 175    InlineConstValue(int value, int chan);
 176    bool is_equal_to(const Value& other) const override;
 177
 178 private:
 179    AluInlineConstants m_value;
 180 };
 181
 182 class UniformValue: public Value {
 183 public:
 184    UniformValue(uint32_t sel, uint32_t chan, uint32_t kcache_bank = 0);
 185    UniformValue(uint32_t sel, uint32_t chan, PValue addr);
 186    uint32_t sel() const override;
 187    uint32_t kcache_bank() const;
 188 private:
 189    void do_print(std::ostream& os) const override;
 190    bool is_equal_to(const Value& other) const override;
 191
 192    uint32_t m_index;
 193    uint32_t m_kcache_bank;
 194    PValue m_addr;
 195 };
 196
 197 } // end ns r600
 198
 199 #endif