[Bug fortran/54833] Don't wrap __builtin_free(a) in if (a != NULL)

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54833

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-07 15:51:51 UTC ---
It depends on what is the probability that the pointer is NULL.  If it is
unlikely, then unconditional free is the right choice, if NULL is very likely,
then the test may be less expensive (avoids call including likely PLT slot
overhead and comparison at least).