[Driver][ARM64] Make sure the default CPU is passed to the assembler.

<rdar://problem/16573920>


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@206227 91177308-0d34-0410-b5e6-96231b3b80d8
Fixing a typo, updating the diagnostic wording and logic based on post-commit review feedback. Amends r206186.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@206229 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Handle CapturedStmt in instrumentation based profiling

CapturedStmt was being ignored by instrumentation based profiling, and
its counters attributed to the containing function. Instead, we need
to treat this as a top level entity, like we do with blocks.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@206231 91177308-0d34-0410-b5e6-96231b3b80d8