[PATCH] D38164: [MachineScheduler] Favor instructions that do not increase pressure.

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

- I vaguely remember trying something like this and having some crypto benchmarks produce bad schedules; I'll see if I can remember/find it
- tryPressure seems like the wrong place to me, as it is used in 3 different contexts: (compared with target limits, compared with increase region limits, and the current max). From your description it sounds like we only want this behavior once.
- Do you have a specific example where this helps?


https://reviews.llvm.org/D38164