PGO: Change runtime prefix from pgo to profile

These functions are in the profile runtime.  PGO comes later.

Unfortunately, there's only room for 16 characters in a Darwin section,
so use __llvm_prf_ instead of __llvm_profile_ for section names.

<rdar://problem/15943240>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204390 91177308-0d34-0410-b5e6-96231b3b80d8
Refactor to move decl update emission into the decl emission loop.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204392 91177308-0d34-0410-b5e6-96231b3b80d8
Fix PR19172 - wrong this adjustment calculated for virtual destructor in a class with complex inheritance

Reviewed at http://llvm-reviews.chandlerc.com/D3128

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204394 91177308-0d34-0410-b5e6-96231b3b80d8
Consumed Analysis: IgnoreParens bugfix.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204395 91177308-0d34-0410-b5e6-96231b3b80d8