re PR libstdc++/58437 (Sorting value in reverse order is much slower compare to gcc44)

re PR libstdc++/58437 (Sorting value in reverse order is much slower compare to gcc44)

2013-09-30  Chris Jefferson  <chris@bubblescope.net>

	PR libstdc++/58437
	* include/bits/stl_algo.h (__move_median_first): Rename to
	__move_median_to_first, change to take an addition argument.
	(__unguarded_partition_pivot): Adjust.
	* testsuite/performance/25_algorithms/sort.cc: New.
	* testsuite/performance/25_algorithms/sort_heap.cc: Likewise.
	* testsuite/performance/25_algorithms/stable_sort.cc: Likewise.

From-SVN: r203035