04f9a8a7d6
Adjust the pipeline slightly to move ConstraintElim just before the loop simplification pipeline. This increases the number of cases where SCEV should can preserved in the future. This also enables slightly more opportunities, by benefiting from earlier CFG simplifications, which allow more conditions to be added. Reviewed By: nikic, antoniofrighetto Differential Revision: https://reviews.llvm.org/D158843