From mint-bounce@lists.fishpool.fi  Wed Dec  9 12:10:15 2009
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Date: Wed, 09 Dec 2009 18:08:32 +0100
From: =?UTF-8?B?VmluY2VudCBSaXZpw6hyZQ==?= <vincent.riviere@freesbee.fr>
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Subject: Re: [MiNT] XaAES sources for FreeMiNT 1.16.3
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Andreas Schwab wrote:
> unsigned int rotate (unsigned int a, int n)
> {
>   return (a << n) | (a >> (sizeof (a) * 8 - n));
> }

Correct !

$ m68k-atari-mint-gcc -S a.c -o - -O2 -fomit-frame-pointer
#NO_APP
         .text
         .even
         .globl  _rotate
_rotate:
         move.l 4(%sp),%d0
         move.l 8(%sp),%d1
         rol.l %d1,%d0
         rts

$ m68k-atari-mint-gcc -S a.c -o - -O2 -fomit-frame-pointer -mshort
#NO_APP
         .text
         .even
         .globl  _rotate
_rotate:
         move.w 4(%sp),%d0
         move.w 6(%sp),%d1
         rol.w %d1,%d0
         rts

And the function is even inlined when it is used in the same source.
How wrong I was when saying this was a suboptimal case !

-- 
Vincent Rivière