5 Commits

Author	SHA1	Message	Date
Douglas Gregor	c504683237	Implement caching of stat() calls for precompiled headers, which is ... essentially the same thing we do with pretokenized headers. stat() caching improves performance of the Cocoa-prefixed "Hello, World" by 45%. llvm-svn: 70223	2009-04-27 18:38:38 +00:00
Douglas Gregor	162dd0245e	Introduce the notion of a SemaConsumer, which is an ASTConsumer that ... also gets access to the Sema object performing semantic analysis. This will be used by the PCH writer to serialize Sema state. No functionality change. llvm-svn: 69595	2009-04-20 15:53:59 +00:00
Chris Lattner	2199f5b4e5	emit tokens, constify the Preprocessor passed down into PCH writer. ... llvm-svn: 68798	2009-04-10 18:08:30 +00:00
Chris Lattner	eeffaef7b9	Arrange for the preprocessor to be passed down into the PCH writer. ... llvm-svn: 68790	2009-04-10 17:15:23 +00:00
Douglas Gregor	ef84c4b434	Implementation of pre-compiled headers (PCH) based on lazy ... de-serialization of abstract syntax trees. PCH support serializes the contents of the abstract syntax tree (AST) to a bitstream. When the PCH file is read, declarations are serialized as-needed. For example, a declaration of a variable "x" will be deserialized only when its VarDecl can be found by a client, e.g., based on name lookup for "x" or traversing the entire contents of the owner of "x". This commit provides the framework for serialization and (lazy) deserialization, along with support for variable and typedef declarations (along with several kinds of types). More declarations/types, along with important auxiliary structures (source manager, preprocessor, etc.), will follow. llvm-svn: 68732	2009-04-09 22:27:44 +00:00