[all-commits] [llvm/llvm-project] 510030: Reapply [BOLT] DataAggregator support for binaries...

[Paschalis Mpeis via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 51003076ebc1ccc0cf339f9d96b2cfec84ab867c
      https://github.com/llvm/llvm-project/commit/51003076ebc1ccc0cf339f9d96b2cfec84ab867c
  Author: Paschalis Mpeis <paschalis.mpeis at arm.com>
  Date:   2024-12-02 (Mon, 02 Dec 2024)

  Changed paths:
    M bolt/include/bolt/Profile/DataAggregator.h
    M bolt/lib/Profile/DataAggregator.cpp
    M bolt/unittests/Core/CMakeLists.txt
    A bolt/unittests/Core/MemoryMaps.cpp
    M llvm/utils/gn/secondary/bolt/unittests/Core/BUILD.gn

  Log Message:
  -----------
  Reapply [BOLT] DataAggregator support for binaries with multiple text segments (#118023)

When a binary has multiple text segments, the Size is computed as the
difference of the last address of these segments from the BaseAddress.
The base addresses of all text segments must be the same.

Introduces flag 'perf-script-events' for testing, which allows passing
perf events without BOLT having to parse them by invoking 'perf script'.
The flag is used to pass a mock perf profile that has two memory
mappings for a mock binary that has two text segments. The mapping
size is updated as `parseMMapEvents` now processes all text segments.



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