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/* -*- 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.
*/
#ifndef BRW_IR_PERFORMANCE_H
#define BRW_IR_PERFORMANCE_H
class fs_visitor;
namespace brw {
class vec4_visitor;
/**
* Various estimates of the performance of a shader based on static
* analysis.
*/
struct performance {
performance(const fs_visitor *v);
performance(const vec4_visitor *v);
~performance();
analysis_dependency_class
dependency_class() const
{
return (DEPENDENCY_INSTRUCTIONS |
DEPENDENCY_BLOCKS);
}
bool
validate(const backend_shader *) 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);
};
}
#endif
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