Fix an issue where the compiler still allocates an emergency spill slot even
though it already decided to spill an extra callee-save register to use
as a scratch register.
Reviewers: gberry, thegameg, mstorsjo, t.p.northover
Reviewed By: thegameg
Differential Revision: https://reviews.llvm.org/D65504
llvm-svn: 367540
