[Bug middle-end/24947] -Os should maximize inlining --param values.

hubicka at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Mon Aug 21 12:45:00 GMT 2006

------- Comment #11 from hubicka at gcc dot gnu dot org  2006-08-21 12:44 -------
Just to note that for simple accestors (optimizing to single move), the
compiler should be smart enough to figure out that inlining always reduce code
size and inlining those will never hit any of the parameters mentioned. So
increasing the parameters is just symptomatic fix and the metric computing
profitability of inlining shall be tweaked instead.
If max-inline-isnsn-single is hit, compiler really believe that the function
body is rather large and inlining cause code growth.
GCC at the moment is not terribly smart about discovering the simple wrappers
and hopefully will somewhat improve with IPA branch.  However if there are
really simple testcases where compiler is mistaken, I would be interested to
see them.  (preferably as small self contained testcases ;)




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