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https://issues.apache.org/jira/browse/STDCXX-544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Sebor updated STDCXX-544:
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Severity: Inefficiency
Affects Version/s: 4.1.2
4.1.4
4.2.0
Fix Version/s: 4.2.1
Summary: [gcc] use __builtin functions (was: use gcc __builtin
functions)
Affects all released versions.
This makes a lot of sense. We should definitely do a review and take advantage
of not just the gcc built-ins but of other compilers' as well. It can be done
piecemeal, one compiler at a time, and we can probably also roll it out in
stages starting with 4.2.1.
> [gcc] use __builtin functions
> -----------------------------
>
> Key: STDCXX-544
> URL: https://issues.apache.org/jira/browse/STDCXX-544
> Project: C++ Standard Library
> Issue Type: Improvement
> Components: Build
> Affects Versions: 4.1.2, 4.1.3, 4.1.4, 4.2.0
> Environment: gcc
> Reporter: Mark Brown
> Fix For: 4.2.1
>
>
> Gcc provides many built-in equivalents of C library functions like memcpy or
> strlen for optimization purposes. stdcxx should take advantage of them when
> possible to deliver better performance.
> http://gcc.gnu.org/onlinedocs/gcc-4.1.2/gcc/Other-Builtins.html#Other-Builtins
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