[all-commits] [llvm/llvm-project] dd09a7: [BOLT] Add split function support for the Linux ke...

[Maksim Panchenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dd09a7db03f8ebaeb3f49203bb53ac730666c1b4
      https://github.com/llvm/llvm-project/commit/dd09a7db03f8ebaeb3f49203bb53ac730666c1b4
  Author: Maksim Panchenko <maks at fb.com>
  Date:   2024-05-01 (Wed, 01 May 2024)

  Changed paths:
    M bolt/lib/Passes/SplitFunctions.cpp
    M bolt/lib/Rewrite/LinuxKernelRewriter.cpp

  Log Message:
  -----------
  [BOLT] Add split function support for the Linux kernel (#90541)

While rewriting the Linux kernel, we try to fit optimized functions into
their original boundaries. When a function becomes larger, we skip it
during the rewrite and end up with less than optimal code layout. To
overcome that issue, add support for --split-function option so that hot
part of the function could be fit into the original space. The cold part
should go to reserved space in the binary.



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