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author | Kent Hansen <kent.hansen@nokia.com> | 2011-09-14 14:11:17 +0200 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2011-09-15 20:39:28 +0200 |
commit | 8e67ef47942f7d7034ccf2166411d2bf1668c1e2 (patch) | |
tree | bba421abc399c8cc658b0ae234f784eab2b0a417 /dist | |
parent | 08d1ca10537b2005fa0ff93534272e277b3ae821 (diff) |
Boost performance of QChar::isSpace
Make it inline; add fast checks for typical spaces;
add fallback function that uses the fastcall calling
convention.
On ia32, this change makes isSpace ~340x faster for
ascii spaces, ~170x faster for non-space ascii
characters, and ~1.3x faster for non-ascii characters.
Note that this change is NOT binary compatible.
Also add an autotest with expected results from
before the optimization, to ensure that the behavior
is the same.
Change-Id: I9438d0ad3c9ba2e80560c4bee7eed05115265798
Reviewed-on: http://codereview.qt-project.org/4905
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Diffstat (limited to 'dist')
0 files changed, 0 insertions, 0 deletions