"Paulo J. Matos" <pocma...@gmail.com> writes: > I just noticed that the pro_and_epilogue pass in gcc3.4.3 for certain > functions is ran multiple times with sibcalls enabled. Why is that? > > What I did was to put a printf on the epilogue and sibcall_epilogue > pattern so that during compilation it prints the name of the function > currently generating the epilogue for, however, I get a print in > epilogue and a print in sibcall_epilogue for the same function a > couple of times. Why?
One obvious possibility is function cloning, but I can't remember whether gcc 3.4.3 did that. Take a look at the dump file and see whether the function appears more than once. If that doesn't help, run cc1 under a debugger and do a backtrace to find out where the calls are coming from. Ian
