Makoto Kato 39dae322a4 Bug 1869223 - Add fast path to CountGraphemeClusters when text is empty. r=TYLin ...

When reloading https://en.wikipedia.org/wiki/Barack_Obama that is used by
browsertime benchmark, `CountGraphemeClusters` is called around 3000 times.
But half calls are that `aText` is empty.

So if we add fast path for empty text, we can avoid a lot of heap allocations
of `ICU4XGraphemeClusterBreakIteratorUtf16`.

Differential Revision: https://phabricator.services.mozilla.com/D196008

2023-12-12 00:59:27 +00:00

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tools

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util

Bug 1869223 - Add fast path to CountGraphemeClusters when text is empty. r=TYLin

2023-12-12 00:59:27 +00:00

moz.build

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nsUGenCategory.h

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