[PATCH] D116458: [X86] Improve selection of the mov instruction in FrameLowering

[Erik Desjardins via Phabricator via llvm-commits]

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MOV64ri results in a significantly longer encoding, and use of this
operator is fairly avoidable as we can always check the size of the
immediate we're using.

This is an updated version of D99045 <https://reviews.llvm.org/D99045>.

Co-authored-by: Simonas Kazlauskas <git at kazlauskas.me>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D116458

Files:
  llvm/lib/Target/X86/X86FrameLowering.cpp
  llvm/test/CodeGen/X86/segmented-stacks-dynamic.ll
  llvm/test/CodeGen/X86/segmented-stacks.ll

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