Fix a bug where the x86 assembly instruction profiler would not correctly adjust
the CFA instructions when it was profiling an -fomit-frame-pointer function
and a "volatile" register was saved on the stack (e.g. an argument register).
<rdar://problem/15036546>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@191267 91177308-0d34-0410-b5e6-96231b3b80d8