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

   1 /* -*- mesa-c++  -*-
   2  *
   3  * Copyright (c) 2018-2019 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 EMITINSTRUCTION_H
  28 #define EMITINSTRUCTION_H
  29
  30 #include "compiler/nir/nir.h"
  31 #include "sfn_defines.h"
  32 #include "sfn_value.h"
  33 #include "sfn_instruction_alu.h"
  34
  35 namespace r600 {
  36
  37 class ShaderFromNirProcessor;
  38
  39 class EmitInstruction
  40 {
  41 public:
  42    EmitInstruction(ShaderFromNirProcessor& processor);
  43    virtual ~EmitInstruction();
  44    bool emit(nir_instr* instr);
  45
  46    static const std::set<AluModifiers> empty;
  47    static const std::set<AluModifiers> write;
  48    static const std::set<AluModifiers> last_write;
  49    static const std::set<AluModifiers> last;
  50
  51 protected:
  52    virtual bool do_emit(nir_instr* instr) = 0;
  53
  54    // forwards from ValuePool
  55    PValue from_nir(const nir_src& v, unsigned component, unsigned swizzled);
  56    PValue from_nir(const nir_src& v, unsigned component);
  57    PValue from_nir(const nir_alu_src& v, unsigned component);
  58    PValue from_nir(const nir_tex_src& v, unsigned component);
  59    PValue from_nir(const nir_alu_dest& v, unsigned component);
  60    PValue from_nir(const nir_dest& v, unsigned component);
  61
  62    const nir_load_const_instr* get_literal_register(const nir_src& src) const;
  63
  64    int lookup_register_index(const nir_src& src) const;
  65    int lookup_register_index(const nir_dest& dst);
  66    PValue create_register_from_nir_src(const nir_src& src, unsigned comp);
  67
  68    int allocate_temp_register();
  69
  70    PValue get_temp_register(int channel = -1);
  71    GPRVector get_temp_vec4();
  72
  73    // forwards from ShaderFromNirProcessor
  74    void emit_instruction(Instruction *ir);
  75    bool emit_instruction(EAluOp opcode, PValue dest,
  76                          std::vector<PValue> src0,
  77                          const std::set<AluModifiers>& m_flags);
  78
  79    PValue from_nir_with_fetch_constant(const nir_src& src, unsigned component);
  80    GPRVector vec_from_nir_with_fetch_constant(const nir_src& src, unsigned mask,
  81                                               const GPRVector::Swizzle& swizzle, bool match = false);
  82
  83    void add_uniform(unsigned index, const PValue &value);
  84    void load_uniform(const nir_alu_src& src);
  85    const nir_variable *get_deref_location(const nir_src& v) const;
  86
  87    enum chip_class get_chip_class(void) const;
  88
  89    PValue literal(uint32_t value);
  90
  91    GPRVector vec_from_nir(const nir_dest& dst, int num_components);
  92
  93    bool inject_register(unsigned sel, unsigned swizzle,
  94                         const PValue& reg, bool map);
  95
  96 private:
  97
  98    ShaderFromNirProcessor& m_proc;
  99 };
 100
 101 }
 102
 103
 104
 105 #endif // EMITINSTRUCTION_H