Unify the two CRC implementations
David added the JamCRC implementation in r246590. More recently, Eugene
added a CRC-32 implementation in r357901, which falls back to zlib's
crc32 function if present.
These checksums are essentially the same, so having multiple
implementations seems unnecessary. This replaces the CRC-32
implementation with the simpler one from JamCRC, and implements the
JamCRC interface in terms of CRC-32 since this means it can use zlib's
implementation when available, saving a few bytes and potentially making
it faster.
JamCRC took an ArrayRef<char> argument, and CRC-32 took a StringRef.
This patch changes it to ArrayRef<uint8_t> which I think is the best
choice, and simplifies a few of the callers nicely.
Differential revision: https://reviews.llvm.org/D68570
git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@374148 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/COFF/PDB.cpp b/COFF/PDB.cpp
index 41d2c5a..d0f8f3d 100644
--- a/COFF/PDB.cpp
+++ b/COFF/PDB.cpp
@@ -51,10 +51,10 @@
#include "llvm/Object/COFF.h"
#include "llvm/Object/CVDebugRecord.h"
#include "llvm/Support/BinaryByteStream.h"
+#include "llvm/Support/CRC.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/FormatVariadic.h"
-#include "llvm/Support/JamCRC.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/ScopedPrinter.h"
#include <memory>
@@ -965,9 +965,7 @@
sc.Imod = secChunk->file->moduleDBI->getModuleIndex();
ArrayRef<uint8_t> contents = secChunk->getContents();
JamCRC crc(0);
- ArrayRef<char> charContents = makeArrayRef(
- reinterpret_cast<const char *>(contents.data()), contents.size());
- crc.update(charContents);
+ crc.update(contents);
sc.DataCrc = crc.getCRC();
} else {
sc.Characteristics = os ? os->header.Characteristics : 0;
