tree ef93a4503bf57c6f71ad8a6b8fe55a9532afefd8
parent 71238f67c5df13eef19450d66b7a7ab28377192a
author Douglas Gregor <dgregor@apple.com> 1240702202 +0000
committer Douglas Gregor <dgregor@apple.com> 1240702202 +0000

Lazily load the controlling macros for all of the headers known in the
PCH file. In the Cocoa-prefixed "Hello, World" benchmark, this takes
us from reading 503 identifiers down to 37 and from 470 macros down to
4. It also results in an 8% performance improvement.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70094 91177308-0d34-0410-b5e6-96231b3b80d8