diff options
| author | Douglas Gregor <dgregor@apple.com> | 2009-07-07 16:35:42 +0000 |
|---|---|---|
| committer | Douglas Gregor <dgregor@apple.com> | 2009-07-07 16:35:42 +0000 |
| commit | c29f77b769bcc5b6dc85e72c8e3cc2e348e5cf25 (patch) | |
| tree | 7d74f6f2933d40483d1d762e4f634c3e153f090e /lib/Frontend/PCHWriter.cpp | |
| parent | 0d3c26c76997688eaf7e51764a66815652e09642 (diff) | |
Make ASTContext explicitly keep track of the declaration for the C
FILE type, rather than using name lookup to find FILE within the
translation unit. Within precompiled headers, FILE is treated as yet
another "special type" (like __builtin_va_list).
This change should provide a performance improvement (not verified),
since the lookup into the translation unit declaration
forces the (otherwise unneeded) construction of a large hash table.
More importantly, with precompiled headers, the construction
of that table requires deserializing most of the top-level
declarations from the precompiled header, which are then unused.
Fixes PR 4509.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74911 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Frontend/PCHWriter.cpp')
| -rw-r--r-- | lib/Frontend/PCHWriter.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp index 566df350f6..0362e8a490 100644 --- a/lib/Frontend/PCHWriter.cpp +++ b/lib/Frontend/PCHWriter.cpp @@ -1892,6 +1892,7 @@ void PCHWriter::WritePCH(Sema &SemaRef, MemorizeStatCalls *StatCalls, AddTypeRef(Context.getObjCClassType(), Record); AddTypeRef(Context.getRawCFConstantStringType(), Record); AddTypeRef(Context.getRawObjCFastEnumerationStateType(), Record); + AddTypeRef(Context.getFILEType(), Record); Stream.EmitRecord(pch::SPECIAL_TYPES, Record); // Write the record containing external, unnamed definitions. |