Re: Optimization around mul and restoring r1
"Weddington, Eric" <[email protected]>
| Newsgroups | gmane.comp.hardware.avr.gcc |
|---|---|
| Message-ID | <F4ADC872C7AFBE49A9CEDE5C75191C274D86AAA6@dvrmbx01> |
> -----Original Message----- > From: [email protected] > [mailto:[email protected]] On > Behalf Of Simon Kirby > Sent: Tuesday, October 01, 2013 9:42 AM > To: [email protected] > Subject: [avr-gcc-list] Optimization around mul and restoring r1 > > Hello! > > How difficult would it be to convince avr-gcc to not re-zero r1 > instantly > after mul, but delay it until a zero is actually needed? Patches to avr-gcc are welcome. Eric