IABSD.fr/xenocara/lib/mesa/src/intel/compiler/brw_ir_performance.h

Branch : - branch - master - tag -

• Show log

  Commit

• Author : jsg
  Date : 2025-06-05 14:17:56
  Hash : 452696b8
  Message : Merge Mesa 25.0.7

• lib/mesa/src/intel/compiler/brw_ir_performance.h

• /* -*- c++ -*- */
  /*
   * Copyright © 2020 Intel Corporation
   *
   * 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.
   */
  
  #pragma once
  
  #include "brw_ir_analysis.h"
  
  struct fs_visitor;
  
  namespace brw {
     /**
      * Various estimates of the performance of a shader based on static
      * analysis.
      */
     struct performance {
        performance(const fs_visitor *v);
        ~performance();
  
        analysis_dependency_class
        dependency_class() const
        {
           return (DEPENDENCY_INSTRUCTIONS |
                   DEPENDENCY_BLOCKS);
        }
  
        bool
        validate(const fs_visitor *) const
        {
           return true;
        }
  
        /**
         * Array containing estimates of the runtime of each basic block of the
         * program in cycle units.
         */
        unsigned *block_latency;
  
        /**
         * Estimate of the runtime of the whole program in cycle units assuming
         * uncontended execution.
         */
        unsigned latency;
  
        /**
         * Estimate of the throughput of the whole program in
         * invocations-per-cycle units.
         *
         * Note that this might be lower than the ratio between the dispatch
         * width of the program and its latency estimate in cases where
         * performance doesn't scale without limits as a function of its thread
         * parallelism, e.g. due to the existence of a bottleneck in a shared
         * function.
         */
        float throughput;
  
     private:
        performance(const performance &perf);
        performance &
        operator=(performance u);
     };
  }