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Re: [Fwd: Re: [avr-gcc-list] GCC-AVR Register optimisations]
From: |
Dmitry K. |
Subject: |
Re: [Fwd: Re: [avr-gcc-list] GCC-AVR Register optimisations] |
Date: |
Fri, 11 Jan 2008 17:26:27 +1000 |
User-agent: |
KMail/1.5 |
On Friday 11 January 2008 11:38, Andrew Hutchinson wrote:
> I tried they earlier example:
>
> char *p1 = x;
> foo(p1++);
> foo(p1++);
> foo(p1++);
[...]
> I am not experienced enough to know why gcc cannot optimise this case.
> But it looks like a weakness with gcc (not gcc-avr)
Possible, yes.
Some another targets of GCC 4.2.2:
pdp11 --> ugly
arm/thumb --> ugly
arm/arm --> OK
Regards,
Dmitry
- RE: Simulator for GCC Testing [was: RE: [Fwd: Re:[avr-gcc-list]GCC-AVR Register optimisations]], (continued)
- RE: Simulator for GCC Testing [was: RE: [Fwd: Re:[avr-gcc-list]GCC-AVR Register optimisations]], Weddington, Eric, 2008/01/15
- Re: Simulator for GCC Testing [was: RE: [Fwd: Re:[avr-gcc-list]GCC-AVR Register optimisations]], Andrew Hutchinson, 2008/01/15
- [avr-gcc-list] Cygwin GCC build cc1.exe file size, Andrew Hutchinson, 2008/01/15
- RE: [avr-gcc-list] Cygwin GCC build cc1.exe file size, Weddington, Eric, 2008/01/15
- Re: [avr-gcc-list] Cygwin GCC build cc1.exe file size, David Brown, 2008/01/16
- RE: [avr-gcc-list] Cygwin GCC build cc1.exe file size, Weddington, Eric, 2008/01/16
- [avr-gcc-list] GCC Testing, Andrew Hutchinson, 2008/01/15
- Re: Simulator for GCC Testing [was: RE: [Fwd: Re: [avr-gcc-list]GCC-AVR Register optimisations]], Klaus Rudolph, 2008/01/16
- Re: Simulator for GCC Testing [was: RE: [Fwd: Re: [avr-gcc-list] GCC-AVR Register optimisations]], William Rivet, 2008/01/13
[Fwd: Re: [avr-gcc-list] GCC-AVR Register optimisations], Andrew Hutchinson, 2008/01/10