Add some comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197875 91177308-0d34-0410-b5e6-96231b3b80d8
AVX512: SETCC returns i1 for AVX-512 and i8 for all others


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197876 91177308-0d34-0410-b5e6-96231b3b80d8
Dwarf: Fix a copy-paste bug.

This tag isn't emitted by any compiler at the moment. PR18306.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197877 91177308-0d34-0410-b5e6-96231b3b80d8
Use r2 when encoding tls on ppc32. Fixes PR18305.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197878 91177308-0d34-0410-b5e6-96231b3b80d8
The count() function for STL datatypes returns unsigned, even
where it's only bool-like 1/0 result like std::set.count(). 

Some of the LLVM ADT already return unsigned count(), while
others return bool count().

This patch modifies SmallPtrSet, SmallSet, SparseSet count()
to return unsigned instead of bool:

 1 instead of true
 0 instead of false

More ADT to follow. 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197879 91177308-0d34-0410-b5e6-96231b3b80d8
Define LLVM_HAS_STRONG_ENUMS

This is needed to guard an upcoming feature in clang until the C++11 transition
is complete, at which point it can be removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197895 91177308-0d34-0410-b5e6-96231b3b80d8