llvm-project

9106b58c - [CodeGen][MISched] Add misched post-regalloc bottom-up scheduling

[CodeGen][MISched] Add misched post-regalloc bottom-up scheduling There is the possibility that the bottom-up direction will lead to performance improvements on certain targets, as this is certainly the case for the pre-regalloc GenericScheduler. This patch will give people the opportunity to experiment for their sub-targets. However, this patch keeps the top-down approach as the default for the PostGenericScheduler since that is what subtargets expect today.