This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Combined top-down and bottom-up instruction scheduler


IIUC, in the haifa-sched.c, the default scheduling algorithm seems to be top-down (before reload).
Is there a way to schedule the other way (bottom up), or both ways?

As a use case for bottom-up or some other heuristic:
Currently, the first priority in the selection is given to the longest path, in some cases this may produce code with stalls at the end of the basic block. Whereas in the case of combined top-down + bottom-up scheduling we would end up having stalls in the middle of the basic block.

Thanks,
-Aditya

 		 	   		  

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]