[all-commits] [llvm/llvm-project] 3a0d89: [BOLT] Add support for BOLT-reserved space in a bi...

[Maksim Panchenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3a0d894fafddace75f03fa7df25022cadbe2dffc
      https://github.com/llvm/llvm-project/commit/3a0d894fafddace75f03fa7df25022cadbe2dffc
  Author: Maksim Panchenko <maks at fb.com>
  Date:   2024-04-29 (Mon, 29 Apr 2024)

  Changed paths:
    M bolt/include/bolt/Rewrite/RewriteInstance.h
    M bolt/lib/Rewrite/RewriteInstance.cpp

  Log Message:
  -----------
  [BOLT] Add support for BOLT-reserved space in a binary (#90300)

Allow the user to allocate space in a binary that could be used by BOLT
for allocating new sections. The reservation is specified by two special
symbols recognizable by BOLT: __bolt_reserved_{start,end}.

The reserved space will be useful for optimizing the Linux kernel where
we cannot allocate a new executable segment. However, the support is not
limited to kernel binaries as some user-space application may find it
useful too.



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