— GIMPLE function: greturn *gimple_build_return (tree retval)

Build a GIMPLE_RETURN statement whose return value is retval.

— GIMPLE function: tree gimple_return_retval (const greturn *g)

Return the return value for GIMPLE_RETURN G.

— GIMPLE function: void gimple_return_set_retval (greturn *g, tree retval)

Set RETVAL to be the return value for GIMPLE_RETURN G.