tags-cache: skip the filternode step if we are not going to use it When warming the hgtagsfnodescache, we don't need the actual result, so we can simply skip the part that "filter" fnode we read from the cache. So provide a quite visible speed up to the top level `hg debugupdatecache` function. ### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog # benchmark.name = hg.debug.debug-update-cache # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.pre-state = warm before: 19.947581 after: 18.916804 (-5.17%, -1.03)

     1

  $ hg init repo

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  $ cd repo

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  $ echo This is file a1 > a

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  $ hg add a

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  $ hg commit -m "commit #0"

     6

  $ ls -A

     7

  .hg

     8

  a

     9

  $ echo This is file b1 > b

    10

  $ hg add b

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  $ hg commit -m "commit #1"

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  $ hg co 0

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  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

    14

    15

B should disappear

    16

    17

  $ ls -A

    18

  .hg

    19

  a