[Bug c/23830] New: inline optimization possibility - reorder compilation step

[Atif dot Hussain at gmail dot com]

subj: For functions specified inline, decision to inline them should be based on
inlined code size instead of un-inlined function length.

Here is a simple snippet of a larger complex.

inline int changePrecision(int x, int x_prec, int y_prec) {
if (y_prec>x_prec) return (x<<(y_prec-x_prec));
else
if (y_prec<x_prec) return (x>>(x_prec-y_prec));
else
return k;
}
which is intended to be called with constants x_prec & y_prec.
This code though assigned inline (it would be 0 or 1 cycles) is 
first created into a function, observed to be long enough, and not inlined.

-- 
           Summary: inline optimization possibility - reorder compilation
                    step
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Atif dot Hussain at gmail dot com
                CC: Atif dot Hussain at gmail dot com,gcc-bugs at gcc dot
                    gnu dot org
  GCC host triplet: frontend


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23830