[all-commits] [llvm/llvm-project] b6043f: [RA] Disable split around hint register if optimiz...

[weiguozhi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b6043f98673e33f17564dd240be3878c61e22333
      https://github.com/llvm/llvm-project/commit/b6043f98673e33f17564dd240be3878c61e22333
  Author: weiguozhi <57237827+weiguozhi at users.noreply.github.com>
  Date:   2023-10-11 (Wed, 11 Oct 2023)

  Changed paths:
    M llvm/lib/CodeGen/RegAllocGreedy.cpp
    M llvm/test/CodeGen/ARM/thumb2-size-opt.ll
    A llvm/test/CodeGen/X86/no-split-size.ll
    M llvm/test/DebugInfo/ARM/sdag-split-arg.ll

  Log Message:
  -----------
  [RA] Disable split around hint register if optimize for size (#68619)

Split a virtual register with hint may generate COPY instructions in
multiple cold basic blocks, and increase code size. So disable this
split when the function is optimized for size.