On Mon, 22 Aug 2005 08:08:20 -0600 Tres Melton <[EMAIL PROTECTED]> babbled:
> On Mon, 2005-08-22 at 07:29 +0000, Tiago Victor Gehring wrote: > > Hi, > > regarding the problem I mentionted about the new amd64 optimized > > functions in imlib2, I think I found the problem, has something to do > > with the fact that memory was not aligned in some (SSE2 128 bit) MOV > > operations - ie, I just changed a couple of MOVDQA to MOVDQU in file > > amd64_blend.S, treating memory as unaligned; > > Now if this has some other side effects (speed?) I don't know, but for > > me it worked now... > > > > Cheers, > > Tiago Gehring > > > This is a poor solution in terms of speed. The correct solution is to > ensure that the memory is properly aligned. For the time being it > should be left that way (I noticed that raster committed the move > unaligned data change). I have spoken with vapier (briefly) about it > and am hoping to force the memory to be aligned on 128 bit boundaries. > This will impact the stack size of the code and a few other things that > I want to look into before offering a patch. A couple of hints: yeah. i;d rather though it not segv :) so take a hit and not segv for now thanks :) > SSE instructions should be aligned on 16 byte (128 bit) boundaries. > MMX instructions should be aligned on 8 byte ( 64 bit) boundaries. > > ASM: > .align 16 > > C: > Image * __attribute__ ((aligned (16))) image; > > Regards, > RiverRat > -- > Tres > > > > ------------------------------------------------------- > SF.Net email is Sponsored by the Better Software Conference & EXPO > September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices > Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA > Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- The Rasterman (Carsten Haitzler) [EMAIL PROTECTED] 裸好多 [EMAIL PROTECTED] Tokyo, Japan (東京 日本) ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
