[PATCH] D19401: MachineScheduler: Fully compare top/bottom candidates

[Matthias Braun via llvm-commits]

MatzeB added a comment.

In http://reviews.llvm.org/D19401#464518, @tstellarAMD wrote:

> Using 0-48 SGPRs gives allows for maximum occupancy, so saving 2 sgprs doesn't impact performance here.


As far as the scheduling algorithms are concerned less registers are better, I don't think the heuristic knows about the threshold at 48 regs.


Repository:
  rL LLVM

http://reviews.llvm.org/D19401