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Re: [avr-gcc-list] Optimization around mul and restoring r1
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From: |
Weddington, Eric |
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Subject: |
Re: [avr-gcc-list] Optimization around mul and restoring r1 |
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Date: |
Tue, 1 Oct 2013 10:07:31 +0000 |
> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On
> Behalf Of Simon Kirby
> Sent: Tuesday, October 01, 2013 9:42 AM
> To: address@hidden
> 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