d9a44c818f
Adds initial support for spill/reload estimation. Currently, it just runs the operands and calculates number of registers, used by the operands. If this number greater than the number of total available registers, it consider the first (full) groups as the candidates for the spills/reloads. Reviewers: hiraditya, RKSimon, bababuck Pull Request: https://github.com/llvm/llvm-project/pull/187594