llvm-cov: Use uint32_t for loop variables to be more consistent.

The loop bounds here are uint32_t variables, so it makes sense for the
loop variables to have the same type.

Patch by Yuchen Wu!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193192 91177308-0d34-0410-b5e6-96231b3b80d8
DIEHashing: Provide an assert for unreachable functionality regarding friends.

Since (as of r190716) Clang no longer emits debug info for C++ friend
declarations (and it seems GCC never has/does, which was the motivation
for the Clang change), there's no actual reachable case for implementing
the part of DWARF 4, Section 7.27 part 5 that pertains to friends.

Leave an assert here so that if/when we do have a client producing
friends and using type units, we can fill in the gap and add appropriate
(unit and feature) tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193193 91177308-0d34-0410-b5e6-96231b3b80d8
Whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193194 91177308-0d34-0410-b5e6-96231b3b80d8