Re:Sorting in C++: 3 times faster than C
by rmcclellan on Saturday March 17, 2012 @09:25AM
(#3717010)
While I agree that this is totally possible, are there any shipping, non-buggy optimizers that do this? Sometimes C/C++ seems purposely designed to make the compiler/optimizer's job difficult.
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I didn't test it with qsort() specifically (my use case was merge-sorting a linked list), but both gcc and clang are able to perform such optimizations.
I would be surprised if other high-performance compilers were unable to do so.