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https://github.com/KhronosGroup/SPIRV-Tools
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e43c91046b
Creates a pass called eliminate dead functions that looks for functions that could never be called, and deletes them from the module. To support this change a new function was added to the Pass class to traverse the call trees from diffent starting points. Includes a test to ensure that annotations are removed when deleting a dead function. They were not, so fixed that up as well. Did some cleanup of the assembly for the test in pass_test.cpp. Trying to make them smaller and easier to read.
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// Copyright (c) 2017 Google Inc.
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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 LIBSPIRV_OPT_ELIMINATE_DEAD_FUNCTIONS_PASS_H_
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#define LIBSPIRV_OPT_ELIMINATE_DEAD_FUNCTIONS_PASS_H_
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#include "def_use_manager.h"
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#include "function.h"
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#include "mem_pass.h"
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#include "module.h"
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namespace spvtools {
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namespace opt {
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// See optimizer.hpp for documentation.
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class EliminateDeadFunctionsPass : public MemPass {
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public:
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const char* name() const override { return "eliminate-dead-functions"; }
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Status Process(ir::Module*) override;
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private:
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void EliminateFunction(ir::Function* func);
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};
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} // namespace opt
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} // namespace spvtools
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#endif // LIBSPIRV_OPT_ELIMINATE_DEAD_FUNCTIONS_PASS_H_
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