On 08/01/2011 09:10 PM, Dimitrios Apostolou wrote:
Keeping my patch exactly the same, just changing the hook_void_hard_reg_set to receive a (HOST_WIDEST_FAST_INT *) arg and doing the necessary typecasts, added an extra 3 M instructions. But the ix86_live_on_entry is only called 1233x times from df-scan.c. This isn't enough to explain all this overhead.
Indeed, 0.2% is hard to attribute to anything anyway. Can you try building the patch on a couple more target and submit it?
Paolo
