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https://github.com/KhronosGroup/SPIRV-Tools
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c32e79eeef
Adds optimizer API to write disassembly to a given output stream before each pass, and after the last pass. Adds spirv-opt --print-all option to write disassembly to stderr before each pass, and after the last pass.
65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
// Copyright (c) 2016 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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#include "pass_manager.h"
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#include <iostream>
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#include <vector>
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#include "ir_context.h"
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#include "spirv-tools/libspirv.hpp"
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namespace spvtools {
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namespace opt {
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Pass::Status PassManager::Run(ir::IRContext* context) {
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auto status = Pass::Status::SuccessWithoutChange;
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// If print_all_stream_ is not null, prints the disassembly of the module
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// to that stream, with the given preamble and optionally the pass name.
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auto print_disassembly = [&context, this](const char* preamble, Pass* pass) {
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if (print_all_stream_) {
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std::vector<uint32_t> binary;
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context->module()->ToBinary(&binary, false);
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SpirvTools t(SPV_ENV_UNIVERSAL_1_2);
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std::string disassembly;
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t.Disassemble(binary, &disassembly, 0);
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*print_all_stream_ << preamble << (pass ? pass->name() : "") << "\n"
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<< disassembly << std::endl;
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}
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};
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for (const auto& pass : passes_) {
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print_disassembly("; IR before pass ", pass.get());
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const auto one_status = pass->Run(context);
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if (one_status == Pass::Status::Failure) return one_status;
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if (one_status == Pass::Status::SuccessWithChange) status = one_status;
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}
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print_disassembly("; IR after last pass", nullptr);
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// Set the Id bound in the header in case a pass forgot to do so.
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//
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// TODO(dnovillo): This should be unnecessary and automatically maintained by
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// the IRContext.
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if (status == Pass::Status::SuccessWithChange) {
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context->module()->SetIdBound(context->module()->ComputeIdBound());
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}
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passes_.clear();
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return status;
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}
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} // namespace opt
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} // namespace spvtools
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