mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-19 03:20:14 +00:00
03000a3a38
This forks the testing harness from https://github.com/google/shaderc to allow testing CLI tools. New features needed for SPIRV-Tools include: 1- A new PlaceHolder subclass for spirv shaders. This place holder calls spirv-as to convert assembly input into SPIRV bytecode. This is required for most tools in SPIRV-Tools. 2- A minimal testing file for testing basic functionality of spirv-opt. Add tests for all flags in spirv-opt. 1. Adds tests to check that known flags match the names that each pass advertises. 2. Adds tests to check that -O, -Os and --legalize-hlsl schedule the expected passes. 3. Adds more functionality to Expect classes to support regular expression matching on stderr. 4. Add checks for integer arguments to optimization flags. 5. Fixes #1817 by modifying the parsing of integer arguments in flags that take them. 6. Fixes -Oconfig file parsing (#1778). It reads every line of the file into a string and then parses that string by tokenizing every group of characters between whitespaces (using the standard cin reading operator). This mimics shell command-line parsing, but it does not support quoting (and I'm not planning to).
79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
// Copyright (c) 2018 Google LLC.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SOURCE_OPT_LOOP_FISSION_H_
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#define SOURCE_OPT_LOOP_FISSION_H_
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#include <algorithm>
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#include <cstdint>
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#include <map>
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#include <utility>
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#include <vector>
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#include "source/opt/cfg.h"
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#include "source/opt/loop_dependence.h"
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#include "source/opt/loop_utils.h"
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#include "source/opt/module.h"
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#include "source/opt/pass.h"
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#include "source/opt/tree_iterator.h"
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namespace spvtools {
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namespace opt {
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class LoopFissionPass : public Pass {
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public:
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// Fuction used to determine if a given loop should be split. Takes register
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// pressure region for that loop as a parameter and returns true if the loop
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// should be split.
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using FissionCriteriaFunction =
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std::function<bool(const RegisterLiveness::RegionRegisterLiveness&)>;
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// Pass built with this constructor will split all loops regardless of
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// register pressure. Will not split loops more than once.
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LoopFissionPass();
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// Split the loop if the number of registers used in the loop exceeds
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// |register_threshold_to_split|. |split_multiple_times| flag determines
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// whether or not the pass should split loops after already splitting them
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// once.
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LoopFissionPass(size_t register_threshold_to_split,
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bool split_multiple_times = true);
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// Split loops whose register pressure meets the criteria of |functor|.
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LoopFissionPass(FissionCriteriaFunction functor,
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bool split_multiple_times = true)
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: split_criteria_(functor), split_multiple_times_(split_multiple_times) {}
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const char* name() const override { return "loop-fission"; }
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Pass::Status Process() override;
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// Checks if |loop| meets the register pressure criteria to be split.
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bool ShouldSplitLoop(const Loop& loop, IRContext* context);
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private:
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// Functor to run in ShouldSplitLoop to determine if the register pressure
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// criteria is met for splitting the loop.
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FissionCriteriaFunction split_criteria_;
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// Flag designating whether or not we should also split the result of
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// previously split loops if they meet the register presure criteria.
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bool split_multiple_times_;
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};
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} // namespace opt
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} // namespace spvtools
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#endif // SOURCE_OPT_LOOP_FISSION_H_
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