r248875 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Mon Jun  5 10:34:13 2017
New Revision: 248875

URL: https://gcc.gnu.org/viewcvs?rev=248875&root=gcc&view=rev
Log:
Optimize std::advance for single increments

	* include/bits/stl_iterator_base_funcs.h
	(__advance<_RandomAccessIterator, _Distance>): Optimize for next/prev
	cases where incrementing or decrementing a single step.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/stl_iterator_base_funcs.h