Mircea Trofin ed2deab595 [nfc][regalloc] Make the max inference cutoff configurable ...

Added a flag to make configurable the number of interferences after
which we 'bail out' and treat a set of intervals as un-evictable. Also
using it on the ML side, as it turns out to be a good control for
compile-time.

With this configurable, we can do a bit of trial and error and see if
bumping it has any effect on heuristic/policy quality.

Differential Revision: https://reviews.llvm.org/D118707

2022-02-02 07:29:34 -08:00

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