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Bug 560349 - make PodZero use inline loops rather than memset; r=luke

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This commit is contained in:
Nathan Froyd 2011-12-08 19:59:08 -05:00
parent 1513850d8f
commit f5918cd8f9
1 changed files with 8 additions and 1 deletions
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9
js/src/jsutil.h
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@ -280,7 +280,14 @@ template <class T>
JS_ALWAYS_INLINE static void
PodZero(T *t, size_t nelem)
{
memset(t, 0, nelem * sizeof(T));
/*
* This function is often called with 'nelem' small; we use an
* inline loop instead of calling 'memset' with a non-constant
* length. The compiler should inline the memset call with constant
* size, though.
*/
for (size_t i = 0; i < nelem; ++i, ++t)
memset(t, 0, sizeof(T));
}
/*