119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
// Copyright (c) 2018 Google LLC
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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 "source/opt/strip_nonsemantic_info_pass.h"
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#include <vector>
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#include "source/opt/instruction.h"
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#include "source/opt/ir_context.h"
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#include "source/util/string_utils.h"
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namespace spvtools {
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namespace opt {
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Pass::Status StripNonSemanticInfoPass::Process() {
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bool modified = false;
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std::vector<Instruction*> to_remove;
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bool other_uses_for_decorate_string = false;
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for (auto& inst : context()->module()->annotations()) {
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switch (inst.opcode()) {
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case spv::Op::OpDecorateStringGOOGLE:
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if (spv::Decoration(inst.GetSingleWordInOperand(1)) ==
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spv::Decoration::HlslSemanticGOOGLE ||
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spv::Decoration(inst.GetSingleWordInOperand(1)) ==
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spv::Decoration::UserTypeGOOGLE) {
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to_remove.push_back(&inst);
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} else {
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other_uses_for_decorate_string = true;
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}
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break;
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case spv::Op::OpMemberDecorateStringGOOGLE:
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if (spv::Decoration(inst.GetSingleWordInOperand(2)) ==
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spv::Decoration::HlslSemanticGOOGLE ||
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spv::Decoration(inst.GetSingleWordInOperand(2)) ==
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spv::Decoration::UserTypeGOOGLE) {
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to_remove.push_back(&inst);
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} else {
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other_uses_for_decorate_string = true;
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}
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break;
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case spv::Op::OpDecorateId:
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if (spv::Decoration(inst.GetSingleWordInOperand(1)) ==
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spv::Decoration::HlslCounterBufferGOOGLE) {
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to_remove.push_back(&inst);
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}
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break;
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default:
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break;
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}
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}
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for (auto& inst : context()->module()->extensions()) {
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const std::string ext_name = inst.GetInOperand(0).AsString();
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if (ext_name == "SPV_GOOGLE_hlsl_functionality1") {
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to_remove.push_back(&inst);
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} else if (ext_name == "SPV_GOOGLE_user_type") {
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to_remove.push_back(&inst);
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} else if (!other_uses_for_decorate_string &&
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ext_name == "SPV_GOOGLE_decorate_string") {
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to_remove.push_back(&inst);
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} else if (ext_name == "SPV_KHR_non_semantic_info") {
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to_remove.push_back(&inst);
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}
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}
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// remove any extended inst imports that are non semantic
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std::unordered_set<uint32_t> non_semantic_sets;
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for (auto& inst : context()->module()->ext_inst_imports()) {
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assert(inst.opcode() == spv::Op::OpExtInstImport &&
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"Expecting an import of an extension's instruction set.");
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const std::string extension_name = inst.GetInOperand(0).AsString();
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if (spvtools::utils::starts_with(extension_name, "NonSemantic.")) {
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non_semantic_sets.insert(inst.result_id());
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to_remove.push_back(&inst);
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}
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}
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// if we removed some non-semantic sets, then iterate over the instructions in
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// the module to remove any OpExtInst that referenced those sets
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if (!non_semantic_sets.empty()) {
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context()->module()->ForEachInst(
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[&non_semantic_sets, &to_remove](Instruction* inst) {
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if (inst->opcode() == spv::Op::OpExtInst) {
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if (non_semantic_sets.find(inst->GetSingleWordInOperand(0)) !=
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non_semantic_sets.end()) {
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to_remove.push_back(inst);
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}
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}
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},
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true);
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}
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for (auto* inst : to_remove) {
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modified = true;
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context()->KillInst(inst);
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}
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return modified ? Status::SuccessWithChange : Status::SuccessWithoutChange;
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}
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} // namespace opt
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} // namespace spvtools
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