Help! We've got some C code on the Freescale MPC8360e (powerpc) for which we're trying to get the compiler to generate load/store multiple instructions, particularly when saving registers to the stack on a function call. We've tried using the -mstatic and -mmultiple compiler flags however it still issues stw instructions for each register. I have read that declaring global registers can prevent the store multiple instructions from being used however I cannot find anywhere in the code where we do that. Is there a flag I can set to throw a compiler warning or an error for when the compiler refuses to use load/store multiple instructions (even with the -mstatic and -mmultiple flags)? We're using Qnx Neutrino 6.5 with GCC 4.4.2. Sincerely, Anthony Amaro, Jr.
