tree 24a438744f6306bc9783c5517971063de512b8a5
parent db519a4bb2082b98e03162ac1a4399978833643b
author Douglas Gregor <dgregor@apple.com> 1258419350 +0000
committer Douglas Gregor <dgregor@apple.com> 1258419350 +0000

When querying type qualifiers on QualType via one of the "non-local"
interfaces (which are used throughout the front end), combine the
qualifiers on the QualType instance with the qualifiers on the
canonical type to produce the set of qualifiers that, semantically,
apply to that type. This should design away a large category of
"qualifier-hidden-behind-a-typedef" buts like we saw in PR5383.

Performance-wise, this caused a regression of ~0.5% on Cocoa.h, but
it's totally worth it. We may actually be able to get a little more
performance back by using CanQualType more often.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89018 91177308-0d34-0410-b5e6-96231b3b80d8