Modify the pragma handlers to accept and use StringRefs instead of IdentifierInfos.
When loading the PCH, IdentifierInfos that are associated with pragmas cause declarations that use these identifiers to be deserialized (e.g. the "clang" pragma causes the "clang" namespace to be loaded).
We can avoid this if we just use StringRefs for the pragmas.
As a bonus, since we don't have to create and pass IdentifierInfos, the pragma interfaces get a bit more simplified.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108237 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index c20ecef..51f7293 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -87,7 +87,7 @@
(Ident__VA_ARGS__ = getIdentifierInfo("__VA_ARGS__"))->setIsPoisoned();
// Initialize the pragma handlers.
- PragmaHandlers = new PragmaNamespace(0);
+ PragmaHandlers = new PragmaNamespace(llvm::StringRef());
RegisterBuiltinPragmas();
// Initialize builtin macros like __LINE__ and friends.