Am 25.01.2014 23:00, schrieb 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 ^^
Most could be probably gained in this example by moving variables into xmm registers if only certain kind of operations are carried out on them. _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
