mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-26 21:30:07 +00:00
eda2cfbe12
This Cl cleans up the include paths to be relative to the top level directory. Various include-what-you-use fixes have been added.
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
// Copyright (c) 2017 Google Inc.
|
|
//
|
|
// 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_REDUNDANCY_ELIMINATION_H_
|
|
#define SOURCE_OPT_REDUNDANCY_ELIMINATION_H_
|
|
|
|
#include <map>
|
|
|
|
#include "source/opt/ir_context.h"
|
|
#include "source/opt/local_redundancy_elimination.h"
|
|
#include "source/opt/pass.h"
|
|
#include "source/opt/value_number_table.h"
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
|
|
// This pass implements total redundancy elimination. This is the same as
|
|
// local redundancy elimination except it looks across basic block boundaries.
|
|
// An instruction, inst, is totally redundant if there is another instruction
|
|
// that dominates inst, and also computes the same value.
|
|
class RedundancyEliminationPass : public LocalRedundancyEliminationPass {
|
|
public:
|
|
const char* name() const override { return "redundancy-elimination"; }
|
|
Status Process() override;
|
|
|
|
protected:
|
|
// Removes for all total redundancies in the function starting at |bb|.
|
|
//
|
|
// |vnTable| must have computed a value number for every result id defined
|
|
// in the function containing |bb|.
|
|
//
|
|
// |value_to_ids| is a map from value number to ids. If {vn, id} is in
|
|
// |value_to_ids| then vn is the value number of id, and the defintion of id
|
|
// dominates |bb|.
|
|
//
|
|
// Returns true if at least one instruction is deleted.
|
|
bool EliminateRedundanciesFrom(DominatorTreeNode* bb,
|
|
const ValueNumberTable& vnTable,
|
|
std::map<uint32_t, uint32_t> value_to_ids);
|
|
};
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|
|
|
|
#endif // SOURCE_OPT_REDUNDANCY_ELIMINATION_H_
|