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[PATCH] Minor optimisations in operator new(size_t, align_val_t)


Thanks to Lars for the suggestions.

	* libsupc++/new_opa.cc (operator new(size_t, align_val_t)): Use
	__is_pow2 to check for valid alignment. Avoid branching when rounding
	size to multiple of alignment.

Tested x86_64-linux, committed to trunk.


Attachment: patch.txt
Description: Text document


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