llvm-project

408a094b - [MachinePipeliner] Use VirtRegOrUnit instead of Register appropriately (#177535)

[MachinePipeliner] Use VirtRegOrUnit instead of Register appropriately (#177535) Resolve the FIXMEs in MachinePipeliner added in #167730, primarily by replacing `Register` with `VirtRegOrUnit` where necessary to remove invalid `static_cast`s. Based on my local testing, there was no noticeable performance impact. --------- Co-authored-by: Harsha Jagasia <harsha.jagasia@amd.com>