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Author SHA1 Message Date
John McCall 5fe84129e2 A couple of tweaks to the visibility rules: 
- tags with C linkage should ignore visibility=hidden
  - functions and variables with explicit visibility attributes should
    ignore the linkage of their types
Either of these should be sufficient to fix PR8457.

Also, FileCheck-ize a test case.

llvm-svn: 117351
 2010-10-26 04:59:26 +00:00
John McCall 457a04e3ce Substantially revise how clang computes the visibility of a declaration to 
more closely parallel the computation of linkage.  This gets us to a state
much closer to what gcc emits, modulo bugs, which will undoubtedly arise in
abundance.

llvm-svn: 117147
 2010-10-22 21:05:15 +00:00
Douglas Gregor 4f6e8deec4 Make sure to set the visible on a vtable; VTTs and typeinfo already 
handle visibility properly. Fixes <rdar://problem/8091955>. 

llvm-svn: 105977
 2010-06-14 23:41:45 +00:00
Anders Carlsson 10d369d1a2 Improved handling of the visibility attribute. Declarations now inherit their parent's visibility. 
(This is kind of a risky change, but I did a self-host build and everything appears to work fine!)

llvm-svn: 95511
 2010-02-07 01:44:36 +00:00