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Herbert Valerio Riedel authored
GCC is able to generate better code when using `memcpy` instead of manually copying bytes in a loop. Otoh, `stgAllocForGMP` is typically called for enlarging initial single-limb structures (see also #8647 for more information) and so this minor optimization won't be very visible in measurements. Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
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