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[codeview] Add an extra check for TPI hash values.

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This patch adds a function that corresponds to `fUDTAnon`
and use that to compute TPI hash values as the reference does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273139 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rui Ueyama 2016-06-20 07:31:29 +00:00
parent a8482b2070
commit 4a94acfea8
1 changed files with 10 additions and 2 deletions
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12
lib/DebugInfo/PDB/Raw/TpiStream.cpp
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@ -64,6 +64,13 @@ TpiStream::TpiStream(const PDBFile &File,
TpiStream::~TpiStream() {}
// Corresponds to `fUDTAnon`.
template <typename T> static bool isAnonymous(T &Rec) {
StringRef Name = Rec.getUniqueName();
return Name == "<unnamed-tag>" || Name == "__unnamed" ||
Name.endswith("::<unnamed-tag>") || Name.endswith("::__unnamed");
}
// Computes a hash for a given TPI record.
template <typename T>
static uint32_t getTpiHash(T &Rec, const CVRecord<TypeLeafKind> &RawRec) {
@ -73,10 +80,11 @@ static uint32_t getTpiHash(T &Rec, const CVRecord<TypeLeafKind> &RawRec) {
Opts & static_cast<uint16_t>(ClassOptions::ForwardReference);
bool Scoped = Opts & static_cast<uint16_t>(ClassOptions::Scoped);
bool UniqueName = Opts & static_cast<uint16_t>(ClassOptions::HasUniqueName);
bool IsAnon = UniqueName && isAnonymous(Rec);
if (!ForwardRef && !Scoped)
if (!ForwardRef && !Scoped && !IsAnon)
return hashStringV1(Rec.getName());
if (!ForwardRef && UniqueName)
if (!ForwardRef && UniqueName && !IsAnon)
return hashStringV1(Rec.getUniqueName());
return hashBufferV8(RawRec.RawData);
}