SPIRV-Tools/source/opt/function.h

113 lines
3.9 KiB
C++

// Copyright (c) 2016 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 LIBSPIRV_OPT_CONSTRUCTS_H_
#define LIBSPIRV_OPT_CONSTRUCTS_H_
#include <functional>
#include <memory>
#include <utility>
#include <vector>
#include "basic_block.h"
#include "instruction.h"
#include "iterator.h"
namespace spvtools {
namespace ir {
class Module;
// A SPIR-V function.
class Function {
public:
using iterator = UptrVectorIterator<BasicBlock>;
using const_iterator = UptrVectorIterator<BasicBlock, true>;
// Creates a function instance declared by the given OpFunction instruction
// |def_inst|.
inline explicit Function(std::unique_ptr<Instruction> def_inst);
// The OpFunction instruction that begins the definition of this function.
Instruction& DefInst() { return *def_inst_; }
// Sets the enclosing module for this function.
void SetParent(Module* module) { module_ = module; }
// Appends a parameter to this function.
inline void AddParameter(std::unique_ptr<Instruction> p);
// Appends a basic block to this function.
inline void AddBasicBlock(std::unique_ptr<BasicBlock> b);
// Saves the given function end instruction.
inline void SetFunctionEnd(std::unique_ptr<Instruction> end_inst);
// Returns function's id
inline uint32_t result_id() const { return def_inst_->result_id(); }
// Returns function's type id
inline uint32_t type_id() const { return def_inst_->type_id(); }
iterator begin() { return iterator(&blocks_, blocks_.begin()); }
iterator end() { return iterator(&blocks_, blocks_.end()); }
const_iterator cbegin() const {
return const_iterator(&blocks_, blocks_.cbegin());
}
const_iterator cend() const {
return const_iterator(&blocks_, blocks_.cend());
}
// Runs the given function |f| on each instruction in this function, and
// optionally on debug line instructions that might precede them.
void ForEachInst(const std::function<void(Instruction*)>& f,
bool run_on_debug_line_insts = false);
void ForEachInst(const std::function<void(const Instruction*)>& f,
bool run_on_debug_line_insts = false) const;
// Runs the given function |f| on each parameter instruction in this function,
// and optionally on debug line instructions that might precede them.
void ForEachParam(const std::function<void(const Instruction*)>& f,
bool run_on_debug_line_insts = false) const;
private:
// The enclosing module.
Module* module_;
// The OpFunction instruction that begins the definition of this function.
std::unique_ptr<Instruction> def_inst_;
// All parameters to this function.
std::vector<std::unique_ptr<Instruction>> params_;
// All basic blocks inside this function in specification order
std::vector<std::unique_ptr<BasicBlock>> blocks_;
// The OpFunctionEnd instruction.
std::unique_ptr<Instruction> end_inst_;
};
inline Function::Function(std::unique_ptr<Instruction> def_inst)
: module_(nullptr), def_inst_(std::move(def_inst)), end_inst_() {}
inline void Function::AddParameter(std::unique_ptr<Instruction> p) {
params_.emplace_back(std::move(p));
}
inline void Function::AddBasicBlock(std::unique_ptr<BasicBlock> b) {
blocks_.emplace_back(std::move(b));
}
inline void Function::SetFunctionEnd(std::unique_ptr<Instruction> end_inst) {
end_inst_ = std::move(end_inst);
}
} // namespace ir
} // namespace spvtools
#endif // LIBSPIRV_OPT_CONSTRUCTS_H_