mirror of
https://github.com/KhronosGroup/SPIRV-Tools
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84 lines
3.4 KiB
C++
84 lines
3.4 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and/or associated documentation files (the
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// "Materials"), to deal in the Materials without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Materials, and to
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// permit persons to whom the Materials are furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Materials.
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//
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// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
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// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
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// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
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// https://www.khronos.org/registry/
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//
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// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
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#ifndef LIBSPIRV_OPT_IR_LOADER_H_
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#define LIBSPIRV_OPT_IR_LOADER_H_
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#include <memory>
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#include "basic_block.h"
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#include "instruction.h"
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#include "module.h"
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#include "spirv-tools/libspirv.h"
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namespace spvtools {
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namespace opt {
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namespace ir {
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// Loader class for constructing SPIR-V in-memory IR representation. Methods in
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// this class are designed to work with the interface for spvBinaryParse() in
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// libspirv.h so that we can leverage the syntax checks implemented behind it.
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//
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// The user is expected to call SetModuleHeader() to fill in the module's
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// header, and then AddInstruction() for each decoded instruction, and finally
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// EndModule() to finalize the module. The instructions processed in sequence
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// by AddInstruction() should comprise a valid SPIR-V module.
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class IrLoader {
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public:
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// Instantiates a builder to construct the given |module| gradually.
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IrLoader(Module* module) : module_(module) {}
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// Sets the fields in the module's header to the given parameters.
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void SetModuleHeader(uint32_t magic, uint32_t version, uint32_t generator,
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uint32_t bound, uint32_t reserved) {
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module_->SetHeader({magic, version, generator, bound, reserved});
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}
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// Adds an instruction to the module. This method will properly capture and
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// store the data provided in |inst| so that |inst| is no longer needed after
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// returning.
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void AddInstruction(const spv_parsed_instruction_t* inst);
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// Finalizes the module construction. This must be called after the module
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// header has been set and all instructions have been added.
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// Resolves internal bookkeeping.
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void EndModule();
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private:
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// The module to be built.
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Module* module_;
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// The current Function under construction.
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std::unique_ptr<Function> function_;
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// The current BasicBlock under construction.
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std::unique_ptr<BasicBlock> block_;
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// Line related debug instructions accumulated thus far.
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std::vector<Instruction> dbg_line_info_;
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};
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} // namespace ir
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} // namespace opt
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} // namespace spvtools
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#endif // LIBSPIRV_OPT_IR_LOADER_H_
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