While going through and testing various NES VC games, I noticed Mega Man
5 was just displaying a black screen but the sound and button inputs
were working as expected. Turns out, there is no INI file for that game
id. Copying and renaming Mega Man 4's INI file appears to be enough to
get the game going.
Instead of having an "INS" instruction after every single instruction to duplicate the bottom 64bits in to the top 64bits of the register,
create a new FPR register cache type to track when a register's lower 64bits is supposed to be duplicated in to the high 64bits.
Not necessarily actually having the lower bits duplicated in the host side register. This removes inefficient INS instructions from sequential single
float instructions.
In particular a very heavy single heavy block in Animal Crossing went from 712 instructions down to 520 instructions(~37% less instructions!)
If we are flushing multiple sequential guest GPRs then we can store two in a single STP instruction.
Ikaruga does this quite a bit in their blocks where they do an lmw at the very end and then we have to flush them all.
Typically cuts 16 STR instructions down to 8 STP instructions there.
Tony Drake
flacs
Ryan Houdek
Lioncash
Scott Mansell
Anthony Serna
Markus Wick