On Wed, Aug 13, 2014 at 08:12:03PM +0800, Felix Yang wrote:
> The qsort library function may have different behavior on
> different hosts (say Linux vs MinGW).
> We may have different sorting results with qsort when there are
> elements with the same key value.
> GCC uses qsort a lot. And the output of certain optimizations,
> such as IRA, relies on the sorting result of this library function.
> The problem is that we may have different assembly code of GCC on
> different hosts even with the same source file.
> Normally this is not what a GCC user expect to see.
> In order to fix this issue, I am adding Berkeley qsort to
> libiberty in order to override the one from the library.
Why have you picked a BSD one rather than the GNU one?
glibc qsort is highly optimized and has some other nice properties qsort
from many other sources does not have.
Jakub
