Add experimental -enable-lsr-phielim option.

I'm not sure we will need it in the long run, but the option is
currently useful for checking if the output of LSR is "clean".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141634 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed