| // 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. |
| |
| #include "source/opt/strip_debug_info_pass.h" |
| #include "source/opt/ir_context.h" |
| |
| namespace spvtools { |
| namespace opt { |
| |
| Pass::Status StripDebugInfoPass::Process() { |
| bool modified = !context()->debugs1().empty() || |
| !context()->debugs2().empty() || |
| !context()->debugs3().empty(); |
| |
| std::vector<Instruction*> to_kill; |
| for (auto& dbg : context()->debugs1()) to_kill.push_back(&dbg); |
| for (auto& dbg : context()->debugs2()) to_kill.push_back(&dbg); |
| for (auto& dbg : context()->debugs3()) to_kill.push_back(&dbg); |
| |
| // OpName must come first, since they may refer to other debug instructions. |
| // If they are after the instructions that refer to, then they will be killed |
| // when that instruction is killed, which will lead to a double kill. |
| std::sort(to_kill.begin(), to_kill.end(), |
| [](Instruction* lhs, Instruction* rhs) -> bool { |
| if (lhs->opcode() == SpvOpName && rhs->opcode() != SpvOpName) |
| return true; |
| return false; |
| }); |
| |
| for (auto* inst : to_kill) context()->KillInst(inst); |
| |
| context()->module()->ForEachInst([&modified](Instruction* inst) { |
| modified |= !inst->dbg_line_insts().empty(); |
| inst->dbg_line_insts().clear(); |
| }); |
| |
| if (!get_module()->trailing_dbg_line_info().empty()) { |
| modified = true; |
| get_module()->trailing_dbg_line_info().clear(); |
| } |
| |
| return modified ? Status::SuccessWithChange : Status::SuccessWithoutChange; |
| } |
| |
| } // namespace opt |
| } // namespace spvtools |