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5.53.3 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.

longcall (1)
Apply the longcall attribute to all subsequent function declarations.
longcall (0)
Do not apply the longcall attribute to subsequent function declarations.