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Revert "ASTReader: Copy input file offset data to avoid unaligned accesses" 

We can do this better by changing the type to unaligned_uint64_t and
paying the cost on use instead of up front.

This reverts r240228

llvm-svn: 240246
This commit is contained in:
Justin Bogner 2015-06-21 20:32:36 +00:00
parent 3f31bd6dc0
commit ca9c0ccbc0
2 changed files with 3 additions and 11 deletions
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2
clang/include/clang/Serialization/Module.h
View File

@ -206,7 +206,7 @@ public:
llvm::BitstreamCursor InputFilesCursor;
/// \brief Offsets for all of the input file entries in the AST file.
std::vector<uint64_t> InputFileOffsets;
const uint64_t *InputFileOffsets;
/// \brief The input files that have been loaded from this AST file.
std::vector<InputFile> InputFilesLoaded;

12
clang/lib/Serialization/ASTReader.cpp
View File

@ -2304,21 +2304,13 @@ ASTReader::ReadControlBlock(ModuleFile &F,
return Result;
break;
case INPUT_FILE_OFFSETS: {
case INPUT_FILE_OFFSETS:
NumInputs = Record[0];
NumUserInputs = Record[1];
F.InputFileOffsets.clear();
F.InputFileOffsets.reserve(NumInputs);
using namespace llvm::support;
const char *Buf = Blob.data();
for (unsigned int I = 0; I < NumInputs; ++I)
F.InputFileOffsets.push_back(
endian::readNext<uint64_t, native, unaligned>(Buf));
F.InputFileOffsets = (const uint64_t *)Blob.data();
F.InputFilesLoaded.resize(NumInputs);
break;
}
}
}
}