ARM: use correct offset from base pointer (r6) in call frame regions.

When we had dynamic call frames (i.e. sp adjustment around each call) we
were including that adjustment into offsets calculated based on r6, even
though it's only sp that changes. This led to incorrect stack slot
accesses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348591 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed