bf55c4e3e3
We introduce a new class hierarchy for debug types merging (in DebugTypes.h). The end-goal is to parallelize the type merging - please see the plan in D59226. Previously, dependency discovery was done on the fly, much later, during the type merging loop. Unfortunately, parallelizing the type merging requires the dependencies to be merged in first, before any dependent ObjFile, thus this early discovery. The overall intention for this path is to discover debug information dependencies at a much earlier stage, when processing input files. Currently, two types of dependency are supported: PDB type servers (when compiling with MSVC /Zi) and precompiled headers OBJs (when compiling with MSVC /Yc and /Yu). Once discovered, an explicit link is added into the dependent ObjFile, through the new debug types class hierarchy introduced in DebugTypes.h. Differential Revision: https://reviews.llvm.org/D59053 llvm-svn: 357383
51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
//===- DebugTypes.h ---------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_COFF_DEBUGTYPES_H
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#define LLD_COFF_DEBUGTYPES_H
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#include "llvm/Support/Error.h"
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namespace llvm {
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namespace codeview {
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class PrecompRecord;
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class TypeServer2Record;
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} // namespace codeview
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} // namespace llvm
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namespace lld {
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namespace coff {
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class ObjFile;
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class TpiSource {
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public:
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enum TpiKind { Regular, PCH, UsingPCH, PDB, UsingPDB };
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TpiSource(TpiKind K, ObjFile *F);
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virtual ~TpiSource() {}
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const TpiKind Kind;
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ObjFile *File;
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};
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TpiSource *makeTpiSource(ObjFile *F);
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TpiSource *makeTypeServerSource(ObjFile *F);
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TpiSource *makeUseTypeServerSource(ObjFile *F,
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llvm::codeview::TypeServer2Record *TS);
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TpiSource *makePrecompSource(ObjFile *F);
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TpiSource *makeUsePrecompSource(ObjFile *F,
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llvm::codeview::PrecompRecord *Precomp);
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// Temporary interface to get the dependency
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template <typename T> const T &retrieveDependencyInfo(TpiSource *Source);
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} // namespace coff
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} // namespace lld
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#endif |