mirror of
https://gitee.com/openharmony/third_party_spirv-tools
synced 2024-11-23 07:20:28 +00:00
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
// Copyright (c) 2018 Google LLC.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef SOURCE_OPT_LOOP_UNSWITCH_PASS_H_
|
|
#define SOURCE_OPT_LOOP_UNSWITCH_PASS_H_
|
|
|
|
#include "source/opt/loop_descriptor.h"
|
|
#include "source/opt/pass.h"
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
|
|
// Implements the loop unswitch optimization.
|
|
// The loop unswitch hoists invariant "if" statements if the conditions are
|
|
// constant within the loop and clones the loop for each branch.
|
|
class LoopUnswitchPass : public Pass {
|
|
public:
|
|
const char* name() const override { return "loop-unswitch"; }
|
|
|
|
// Processes the given |module|. Returns Status::Failure if errors occur when
|
|
// processing. Returns the corresponding Status::Success if processing is
|
|
// successful to indicate whether changes have been made to the module.
|
|
Pass::Status Process() override;
|
|
|
|
private:
|
|
bool ProcessFunction(Function* f);
|
|
};
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|
|
|
|
#endif // SOURCE_OPT_LOOP_UNSWITCH_PASS_H_
|