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Tweak the data layout for the on-disk hash table of identifiers in the PCH file so that the key layout matches that of the PTH key layout 

llvm-svn: 70066
This commit is contained in:
Douglas Gregor 2009-04-25 19:25:49 +00:00
parent b62db80c83
commit b3e5f7a7ff
2 changed files with 8 additions and 2 deletions
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2
clang/lib/Frontend/PCHReader.cpp
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@ -1245,8 +1245,8 @@ public:
static std::pair<unsigned, unsigned>
ReadKeyDataLength(const unsigned char*& d) {
using namespace clang::io;
unsigned KeyLen = ReadUnalignedLE16(d);
unsigned DataLen = ReadUnalignedLE16(d);
unsigned KeyLen = ReadUnalignedLE16(d);
return std::make_pair(KeyLen, DataLen);
}

8
clang/lib/Frontend/PCHWriter.cpp
View File

@ -2013,7 +2013,6 @@ public:
EmitKeyDataLength(llvm::raw_ostream& Out, const IdentifierInfo* II,
pch::IdentID ID) {
unsigned KeyLen = strlen(II->getName()) + 1;
clang::io::Emit16(Out, KeyLen);
unsigned DataLen = 4 + 4; // 4 bytes for token ID, builtin, flags
// 4 bytes for the persistent ID
if (II->hasMacroDefinition() &&
@ -2023,7 +2022,14 @@ public:
DEnd = IdentifierResolver::end();
D != DEnd; ++D)
DataLen += sizeof(pch::DeclID);
// We emit the data length before the key length, because we want
// the key length to immediately precede the actual string
// data. This is so that our identifier length + key layout
// matches that of the identifier hash table for pretokenized
// headers.
clang::io::Emit16(Out, DataLen);
clang::io::Emit16(Out, KeyLen);
return std::make_pair(KeyLen, DataLen);
}