[all-commits] [llvm/llvm-project] 8f1d94: [BOLT] Use continuous output addresses in delta en...

[Amir Ayupov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8f1d94aaea5c18b83cd3b0df3be3a48ef1d3833d
      https://github.com/llvm/llvm-project/commit/8f1d94aaea5c18b83cd3b0df3be3a48ef1d3833d
  Author: Amir Ayupov <aaupov at fb.com>
  Date:   2024-01-18 (Thu, 18 Jan 2024)

  Changed paths:
    M bolt/docs/BAT.md
    M bolt/include/bolt/Profile/BoltAddressTranslation.h
    M bolt/lib/Profile/BoltAddressTranslation.cpp

  Log Message:
  -----------
  [BOLT] Use continuous output addresses in delta encoding in BAT

Make output function addresses be delta-encoded wrt last offset in the
previous function. This reduces the deltas in function start addresses.

Test Plan:
Reduces BAT section size to:
- large binary: 12218860 bytes (0.32x original),
- medium binary: 1606580 bytes (0.27x original),
- small binary: 404 bytes (0.28x original),

Reviewers: rafaelauler

Reviewed By: rafaelauler

Pull Request: https://github.com/llvm/llvm-project/pull/76904