[fpc-devel] Optimizations

[Sven Barth]

On 25.01.2014 17:09, Florian Klaempfl wrote:
> Am 24.01.2014 09:32, schrieb Sven Barth:
>> Am 24.01.2014 02:03, schrieb Martin Frb:
>>> There is a bigger example, where exactly that was done, because FPCs
>>> optimization was not sufficient enough for what the author wanted.
>>> http://bugs.freepascal.org/view.php?id=10275
>> In that context... @Florian: how is your SSA support coming along? :)
>
> Still WIP :) But a lot of my commits from the last weeks are spin-offs
> of the SSA work.
>
> Together with all other improvements this results in significant better
> code:
>
> fpc -l -O3 sha256.pp -S2
> Free Pascal Compiler version 2.6.2 [2013/02/12] for i386
> Copyright (c) 1993-2012 by Florian Klaempfl and others
> Target OS: Win32 for i386
> Compiling sha256.pp
> Linking sha256.exe
> 74 lines compiled, 0.1 sec , 26016 bytes code, 2220 bytes data
>
> fptime sha256
> Expected: 3994057095, got 3994057095
> 483.000 ms
>
>
> pp -n @c:\fpc\bin\fpc.cfg -l -O4 sha256.pp -S2
> Free Pascal Compiler version 2.7.1 [2014/01/25] for i386
> Copyright (c) 1993-2013 by Florian Klaempfl and others
>
> fptime sha256
> Expected: 3994057095, got 3994057095
> 367.000 ms

Nice :D
Still looking forward to more improvements regarding SSA ^^

Regards,
Sven