[PATCH] D74539: [KnownBits] Avoid copying KnownBits objects

[Jay Foad via Phabricator via llvm-commits]

foad created this revision.
foad added reviewers: bjope, craig.topper, RKSimon.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

Avoid copying KnownBits objects in some cases where we can move them or
use a slightly simpler constructor instead. NFC.

I found these cases by temporarily deleting KnownBits's copy constructor
and copy assignment operator.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D74539

Files:
  llvm/lib/Analysis/ValueTracking.cpp
  llvm/lib/CodeGen/GlobalISel/GISelKnownBits.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp

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