[PATCH] D116669: [NFC][regalloc] Pass RAGreedy to eviction adviser

[Mircea Trofin via Phabricator via llvm-commits]

mtrofin created this revision.
mtrofin added reviewers: qcolombet, davidxl, MatzeB, wenlei.
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This patch simplifies the interface between RAGreedy and the eviction
adviser by passing the allocator to the adviser, which allows the latter
to extract needed information as needed, rather than requiring it be passed
piecemeal at construction time (which would also complicate later
evolution).

Part of this, the patch also moves ExtraRegInfo back to RAGreedy. We
keep the encapsulation of ExtraRegInfo because it has benefits (e.g.
improved readability by abstracting access to the cascade info) and also
simpler re-initialization at regalloc pass re-entry time (we just flush
the Optional).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116669

Files:
  llvm/lib/CodeGen/RegAllocEvictionAdvisor.cpp
  llvm/lib/CodeGen/RegAllocEvictionAdvisor.h
  llvm/lib/CodeGen/RegAllocGreedy.cpp
  llvm/lib/CodeGen/RegAllocGreedy.h

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