On Saturday 07 April 2012 12:58:14 Jonas Maebe wrote: > On 07 Apr 2012, at 12:31, Martin Schreiber wrote: > > I tried to optimize it with "Whole Program Optimization". > > On win32 I get: > > " > > Free Pascal Compiler version 2.6.0 [2011/12/25] for i386 > > Copyright (c) 1993-2011 by Florian Klaempfl and others > > Target OS: Win32 for i386 > > Compiling minimal.pas > > [...] > > Compiling main.pas > > Compiling main_mfm.pas > > Linking minimal.exe > > minimal.pas(12,1) Error: Error during reading symbol liveness information > > produced by "E:\FPC\2.6.0\bin\i386-win32\objdump.exe -t " > > From http://wiki.freepascal.org/Whole_Program_Optimization#Limitations_4 : > > "This optimisation requires that the nm utility is installed on the system. > For Linux binaries, objdump will also work." > Thanks, where can I get that "nm utility" for win32?
> > On Linux compiling works, there is a binary of 1.3MB after third run as > > described in > > http://wiki.freepascal.org/Whole_Program_Optimization#Concrete_example > > After "strip -s" the size is 780KB. > > On my Linux/i386 system it's 133kb after strip -s, and 261kb before. Have > you recompiled the 2.6.0 rtl somehow? > The result is wit the MSEgui minimal program not the testprogram in the Wiki, sorry for confusion. > > Running the program crashes at startup with > > " > > An unhandled exception occurred at $080A1045 : > > EAbstractError : Abstract method called > > $080A1045 > > $0809B6F5 > > $0809AD8B > > $080AF2AA > > $080AEFC0 > > $080AE4D2 > > $0806FB92 > > $0805C884 > > $0804E48A > > $0805FE70 > > $0804DF94 > > $0804DCFD > > $0804DB2D > > > > An unhandled exception occurred at $0804C2DF : > > An unhandled exception occurred at $B7CE9B7A : > > " > > Strange. This example is tested every night in the test suite runs and > works fine there on Linux/i386: > http://www.freepascal.org/testsuite/cgi-bin/testsuite.cgi?action=3&run1id=1 >08780&testfileid=3122 . I've also just tested it on Linux/i386 (see above) > and it works fine for me. > It is the MSEgui minimal program not the example. > > Should whole program optimization work with FPC 2.6.0? > > Yes. The FPC 2.6.0 compiler binary itself is even compiled with whole > program optimizations (although not with the symbol liveness information > switch, because that requires smart linking and for historical reasons > that's not enabled for the binaries we release). > Then I should try without symbol liveness information too? Martin _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
