| 1 | //===--- DebugInfoSupport.h ---- Utils for debug info support ---*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Utilities to preserve and parse debug info from LinkGraphs. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #ifndef LLVM_EXECUTIONENGINE_ORC_DEBUGINFOSUPPORT_H |
| 14 | #define LLVM_EXECUTIONENGINE_ORC_DEBUGINFOSUPPORT_H |
| 15 | |
| 16 | #include "llvm/ExecutionEngine/Orc/Core.h" |
| 17 | #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h" |
| 18 | |
| 19 | #include "llvm/DebugInfo/DWARF/DWARFContext.h" |
| 20 | |
| 21 | namespace llvm { |
| 22 | |
| 23 | namespace orc { |
| 24 | |
| 25 | Error preserveDebugSections(jitlink::LinkGraph &G); |
| 26 | // The backing stringmap is also returned, for memory liftime management. |
| 27 | Expected<std::pair<std::unique_ptr<DWARFContext>, |
| 28 | StringMap<std::unique_ptr<MemoryBuffer>>>> |
| 29 | createDWARFContext(jitlink::LinkGraph &G); |
| 30 | |
| 31 | // Thin wrapper around preserveDebugSections to be used as a standalone plugin. |
| 32 | class DebugInfoPreservationPlugin : public ObjectLinkingLayer::Plugin { |
| 33 | public: |
| 34 | void modifyPassConfig(MaterializationResponsibility &MR, |
| 35 | jitlink::LinkGraph &LG, |
| 36 | jitlink::PassConfiguration &PassConfig) override { |
| 37 | PassConfig.PrePrunePasses.push_back(x: preserveDebugSections); |
| 38 | } |
| 39 | |
| 40 | Error notifyRemovingResources(JITDylib &JD, ResourceKey K) override { |
| 41 | // Do nothing. |
| 42 | return Error::success(); |
| 43 | } |
| 44 | Error notifyFailed(MaterializationResponsibility &MR) override { |
| 45 | // Do nothing. |
| 46 | return Error::success(); |
| 47 | } |
| 48 | void notifyTransferringResources(JITDylib &JD, ResourceKey DstKey, |
| 49 | ResourceKey SrcKey) override { |
| 50 | // Do nothing. |
| 51 | } |
| 52 | |
| 53 | static Expected<std::unique_ptr<DebugInfoPreservationPlugin>> Create() { |
| 54 | return std::make_unique<DebugInfoPreservationPlugin>(); |
| 55 | } |
| 56 | }; |
| 57 | |
| 58 | } // namespace orc |
| 59 | |
| 60 | } // namespace llvm |
| 61 | |
| 62 | #endif |