[all-commits] [llvm/llvm-project] f23009: [BOLT][DWARF] Reuse entries in .debug_addr when no...

[Alexander Yermolovich via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f230099c132722a3065ac6a00e1cd6052b1a7365
      https://github.com/llvm/llvm-project/commit/f230099c132722a3065ac6a00e1cd6052b1a7365
  Author: Alexander Yermolovich <ayermolo at fb.com>
  Date:   2023-01-24 (Tue, 24 Jan 2023)

  Changed paths:
    M bolt/lib/Core/DebugData.cpp
    A bolt/test/X86/Inputs/dwarf5-helper1-addr-section-reuse.s
    A bolt/test/X86/Inputs/dwarf5-helper2-addr-section-reuse.s
    A bolt/test/X86/Inputs/dwarf5-main-addr-section-reuse.s
    A bolt/test/X86/dwarf5-addr-section-reuse.s

  Log Message:
  -----------
  [BOLT][DWARF] Reuse entries in .debug_addr when not modified

In some binaries produced with ThinLTO there are CUs that share entry in
.debug_addr. Before we would generate a new entry for each. Which lead to binary
size increase. This changes the behavior so that we re-use entries in
.debug_addr.

Reviewed By: maksfb

Differential Revision: https://reviews.llvm.org/D142425