Remove RegisterCount and let GetRegistersAndSP to resize buffer as needed.
Reviewed By: morehouse
Differential Revision: https://reviews.llvm.org/D87747
See https://reviews.llvm.org/D58620 for discussion, and for the commands
I ran. In addition I also ran
for f in $(svn diff | diffstat | grep .cc | cut -f 2 -d ' '); do rg $f . ; done
and manually updated (many) references to renamed files found by that.
llvm-svn: 367463