[Cocoa] Improve performance of font lookups

[Myles C. Maxfield]

[Cocoa] Improve performance of font lookups

[Myles C. Maxfield]

Created attachment 314109 [details]
Patch

[Myles C. Maxfield]

<rdar://problem/31996891>

[Darin Adler]

Comment on attachment 314109 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=314109&action=review

> Source/WebCore/ChangeLog:11
> +        No new tests because there is no behavior change.

I am taking your word for the fact that there is no behavior change.

[Build Bot]

Comment on attachment 314109 [details]
Patch

Attachment 314109 [details] did not pass ios-sim-ews (ios-simulator-wk2):
Output: http://webkit-queues.webkit.org/results/4018020

New failing tests:
fast/text/narrow-non-breaking-space.html
fast/ruby/base-shorter-than-text.html
fast/text/font-weights.html
fast/text/text-combine-shrink-on-color-change.html
fast/text/font-weights-zh.html

[Build Bot]

Created attachment 314114 [details]
Archive of layout-test-results from ews125 for ios-simulator-wk2

The attached test failures were seen while running run-webkit-tests on the ios-sim-ews.
Bot: ews125  Port: ios-simulator-wk2  Platform: Mac OS X 10.12.5

[Myles C. Maxfield]

It looks like there is a behavior change on iOS. 😐

[Jiang Jiang]

Comment on attachment 314109 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=314109&action=review

> Source/WebCore/platform/graphics/cocoa/FontCacheCoreText.cpp:883
> +            CFTypeRef keys[] = { kCTFontEnabledAttribute, postScriptName.startsWith('.') ? kCTFontNameAttribute : kCTFontPostScriptNameAttribute };

Why only use kCTFontPostScriptNameAttribute for visible fonts?

[Myles C. Maxfield]

Comment on attachment 314109 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=314109&action=review

>> Source/WebCore/platform/graphics/cocoa/FontCacheCoreText.cpp:883
>> +            CFTypeRef keys[] = { kCTFontEnabledAttribute, postScriptName.startsWith('.') ? kCTFontNameAttribute : kCTFontPostScriptNameAttribute };
> 
> Why only use kCTFontPostScriptNameAttribute for visible fonts?

It isn't necessary once we fix the case sensitivity problems.

[Myles C. Maxfield]

Created attachment 314395 [details]
Patch for committing

[Myles C. Maxfield]

Committed r219223: <http://trac.webkit.org/changeset/219223>

[Alexey Proskuryakov]

Comment on attachment 314395 [details]
Patch for committing

View in context: https://bugs.webkit.org/attachment.cgi?id=314395&action=review

> PerformanceTests/ChangeLog:9
> +        * Layout/font-fallback-font-family.html: Added.

This test fails, filed bug 174989.