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[BinaryStream] Defaultify copy and move constructors.

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The various BinaryStream classes had explicit copy constructors
which resulted in deleted move constructors.  This was causing
the internal std::shared_ptr to get copied rather than moved
very frequently, since these classes are often used as return
values.

Patch by Alex Telishev
Differential Revision: https://reviews.llvm.org/D36942

llvm-svn: 311368
This commit is contained in:
Zachary Turner 2017-08-21 19:46:46 +00:00
parent 15b60a8a80
commit 755cbbac1f
2 changed files with 15 additions and 14 deletions
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23
include/llvm/Support/BinaryStreamRef.h
View File

@ -31,12 +31,11 @@ protected:
BinaryStreamRefBase(StreamType &BorrowedImpl, uint32_t Offset,
uint32_t Length)
: BorrowedImpl(&BorrowedImpl), ViewOffset(Offset), Length(Length) {}
BinaryStreamRefBase(const BinaryStreamRefBase &Other) {
SharedImpl = Other.SharedImpl;
BorrowedImpl = Other.BorrowedImpl;
ViewOffset = Other.ViewOffset;
Length = Other.Length;
}
BinaryStreamRefBase(const BinaryStreamRefBase &Other) = default;
BinaryStreamRefBase &operator=(const BinaryStreamRefBase &Other) = default;
BinaryStreamRefBase &operator=(BinaryStreamRefBase &&Other) = default;
BinaryStreamRefBase(BinaryStreamRefBase &&Other) = default;
public:
llvm::support::endianness getEndian() const {
@ -142,7 +141,10 @@ public:
llvm::support::endianness Endian);
explicit BinaryStreamRef(StringRef Data, llvm::support::endianness Endian);
BinaryStreamRef(const BinaryStreamRef &Other);
BinaryStreamRef(const BinaryStreamRef &Other) = default;
BinaryStreamRef &operator=(const BinaryStreamRef &Other) = default;
BinaryStreamRef(BinaryStreamRef &&Other) = default;
BinaryStreamRef &operator=(BinaryStreamRef &&Other) = default;
// Use BinaryStreamRef.slice() instead.
BinaryStreamRef(BinaryStreamRef &S, uint32_t Offset,
@ -203,7 +205,12 @@ public:
uint32_t Length);
explicit WritableBinaryStreamRef(MutableArrayRef<uint8_t> Data,
llvm::support::endianness Endian);
WritableBinaryStreamRef(const WritableBinaryStreamRef &Other);
WritableBinaryStreamRef(const WritableBinaryStreamRef &Other) = default;
WritableBinaryStreamRef &
operator=(const WritableBinaryStreamRef &Other) = default;
WritableBinaryStreamRef(WritableBinaryStreamRef &&Other) = default;
WritableBinaryStreamRef &operator=(WritableBinaryStreamRef &&Other) = default;
// Use WritableBinaryStreamRef.slice() instead.
WritableBinaryStreamRef(WritableBinaryStreamRef &S, uint32_t Offset,

6
lib/Support/BinaryStreamRef.cpp
View File

@ -77,9 +77,6 @@ BinaryStreamRef::BinaryStreamRef(StringRef Data, endianness Endian)
: BinaryStreamRef(makeArrayRef(Data.bytes_begin(), Data.bytes_end()),
Endian) {}
BinaryStreamRef::BinaryStreamRef(const BinaryStreamRef &Other)
: BinaryStreamRefBase(Other) {}
Error BinaryStreamRef::readBytes(uint32_t Offset, uint32_t Size,
ArrayRef<uint8_t> &Buffer) const {
if (auto EC = checkOffset(Offset, Size))
@ -117,9 +114,6 @@ WritableBinaryStreamRef::WritableBinaryStreamRef(MutableArrayRef<uint8_t> Data,
: BinaryStreamRefBase(std::make_shared<MutableArrayRefImpl>(Data, Endian),
0, Data.size()) {}
WritableBinaryStreamRef::WritableBinaryStreamRef(
const WritableBinaryStreamRef &Other)
: BinaryStreamRefBase(Other) {}
Error WritableBinaryStreamRef::writeBytes(uint32_t Offset,
ArrayRef<uint8_t> Data) const {