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Reland "[MC][NFC] Make ELFUniquingMap a StringMap (#95006)" #95030

Merged
merged 3 commits into from
Jun 11, 2024
Merged

Reland "[MC][NFC] Make ELFUniquingMap a StringMap (#95006)" #95030

merged 3 commits into from
Jun 11, 2024

Commits on Jun 10, 2024

  1. [MC] Make ELFUniquingMap a StringMap 

    This avoid std::map, which is slow, and uses a StringMap. Section name,
group name, linked-to name and unique id are encoded into the key for
fast lookup.

This gives a measurable performance boost for applications that compile
many small object files (e.g., functions in JIT compilers).
    @aengelke
    aengelke committed Jun 10, 2024
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  2. Reorder fields

    @aengelke
    aengelke committed Jun 10, 2024
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  3. Fix section name length for twines

    @aengelke
    aengelke committed Jun 10, 2024
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