5.49.3 RS/6000 and PowerPC Pragmas
The RS/6000 and PowerPC targets define one pragma for controlling whether or not the longcall
attribute is added to function declarations by default. This pragma overrides the
-mlongcall
option, but not the longcall
and shortcall
attributes. See RS/6000 and PowerPC Options, for more information about when long calls are and are not necessary.