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[libcxx] Use generic builtins for popcount, clz and ctz #86563

Merged
merged 7 commits into from Apr 11, 2024
Merged

[libcxx] Use generic builtins for popcount, clz and ctz #86563

merged 7 commits into from Apr 11, 2024

Commits on Apr 11, 2024

  1. [libcxx] Use generic builtins for popcount, clz and ctz 

    Use __builtin_popcountg instead of __buildin_popcount{l|ll}
Use __builtin_clzg instead of __buildin_clz{l|ll}
Use __builtin_ctzg instead of __builtin_ctz{l|ll}
    @marcauberer
    marcauberer committed Apr 11, 2024
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  2. Shortcuts that benefit from generic builtins

    @marcauberer
    marcauberer committed Apr 11, 2024
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  3. Simplify

    @marcauberer
    marcauberer committed Apr 11, 2024
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  4. Do cleanup and remove non-feasible usages

    @marcauberer
    marcauberer committed Apr 11, 2024
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  5. Fix typo

    @marcauberer
    marcauberer committed Apr 11, 2024
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  6. Avoid duplicate signatures

    @marcauberer
    marcauberer committed Apr 11, 2024
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  7. Use optional second parameter of c{l|t}z builtins 

    Co-authored-by: Nick Desaulniers <nickdesaulniers@users.noreply.github.com>
    @marcauberer @nickdesaulniers
    marcauberer and nickdesaulniers committed Apr 11, 2024
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