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8067073c48
StringMap.h is very popular (4K uses), and it doesn't need to see
BumpPtrAllocator, which is relatively expensive according to
ClangBuildAnalyzer. StringMap only needs MallocAllocator, so split that
into AllocatorBase.h and use it instead.
Here is the change in header uses:
$ diff -u thedeps-before.txt thedeps-after.txt | \
grep '^[-+] ' | sort | uniq -c | sort -nr
3993 + ../llvm/include/llvm/Support/AllocatorBase.h
758 - ../llvm/include/llvm/Support/Allocator.h
270 - ../llvm/include/llvm/Support/Alignment.h
13 - ../llvm/include/llvm/Support/Host.h
6 - ../llvm/include/llvm/ADT/StringMap.h
4 - ../llvm/include/llvm/Support/SwapByteOrder.h
4 - ../llvm/include/llvm/Support/MathExtras.h
4 - ../llvm/include/llvm/Support/AlignOf.h
4 - ../llvm/include/llvm/ADT/SmallVector.h
1 - ../llvm/include/llvm/Support/PointerLikeTypeTraits.h
Reviewed By: MaskRay
Differential Revision: https://reviews.llvm.org/D73392
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
//===- ContinuationRecordBuilder.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 LLVM_DEBUGINFO_CODEVIEW_CONTINUATIONRECORDBUILDER_H
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#define LLVM_DEBUGINFO_CODEVIEW_CONTINUATIONRECORDBUILDER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/DebugInfo/CodeView/CodeView.h"
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#include "llvm/DebugInfo/CodeView/RecordSerialization.h"
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#include "llvm/DebugInfo/CodeView/TypeIndex.h"
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#include "llvm/DebugInfo/CodeView/TypeRecord.h"
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#include "llvm/DebugInfo/CodeView/TypeRecordMapping.h"
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#include "llvm/DebugInfo/CodeView/TypeVisitorCallbacks.h"
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#include "llvm/Support/BinaryByteStream.h"
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#include "llvm/Support/BinaryStreamWriter.h"
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#include "llvm/Support/Error.h"
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#include <cassert>
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#include <cstdint>
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#include <memory>
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#include <vector>
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namespace llvm {
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namespace codeview {
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enum class ContinuationRecordKind { FieldList, MethodOverloadList };
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class ContinuationRecordBuilder {
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SmallVector<uint32_t, 4> SegmentOffsets;
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Optional<ContinuationRecordKind> Kind;
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AppendingBinaryByteStream Buffer;
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BinaryStreamWriter SegmentWriter;
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TypeRecordMapping Mapping;
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ArrayRef<uint8_t> InjectedSegmentBytes;
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uint32_t getCurrentSegmentLength() const;
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void insertSegmentEnd(uint32_t Offset);
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CVType createSegmentRecord(uint32_t OffBegin, uint32_t OffEnd,
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Optional<TypeIndex> RefersTo);
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public:
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ContinuationRecordBuilder();
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~ContinuationRecordBuilder();
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void begin(ContinuationRecordKind RecordKind);
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// This template is explicitly instantiated in the implementation file for all
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// supported types. The method itself is ugly, so inlining it into the header
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// file clutters an otherwise straightforward interface.
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template <typename RecordType> void writeMemberType(RecordType &Record);
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std::vector<CVType> end(TypeIndex Index);
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};
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} // namespace codeview
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} // namespace llvm
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#endif
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