Mircea Trofin c6b9b702a0 [NFC][Regalloc] Factor out eviction decision from eviction attempt ...

This splits tryEvict into a const tryFindEvictionCandidate, which
attempts to find a candidate, and the actual eviction (should the former
be successful)

The newly introduced tryFindEvictionCandidate will move subsequently
into the RegAllocEvictionAdvisor.

RFC: https://lists.llvm.org/pipermail/llvm-dev/2021-November/153639.html

Differential Revision: https://reviews.llvm.org/D113941

2021-11-16 10:50:23 -08:00

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