[fpc-devel] FPC/Lazarus Rebuild performance

[Martin Schreiber]

  Am 12.09.2010 10:12, schrieb Florian Klämpfl:
> The 2.x register allocator is more robust (no more internalerrors 10),
> it is small (basically 2k lines, compiler/rgobj.pas) and it generates
> reasonable register allocations on all types of CPUs (remember, FPC
> supports CPUs with high register pressure like i386 as well as those
> with a lot registers: PowerPC) we support, so we need only to maintain
> one register allocator.
I replaced the "+=" by ":= s +", testresults on the same machine as before:

Delphi 7:
E:\FPC\svn\fixes_2_4\tests\webtbf>dcc32 tw2242x.pp
Borland Delphi Version 15.0
Copyright (c) 1983,2002 Borland Software Corporation
tw2242x.pp(20009)
20010 lines, 0.19 seconds, 311088 bytes code, 1801 bytes data.

E:\FPC\svn\fixes_2_4\tests\webtbf>

FPC:
E:\FPC\svn\fixes_2_4\tests\webtbf>ppc386 tw2242x.pp
Free Pascal Compiler version 2.4.0 [2009/12/18] for i386
Copyright (c) 1993-2009 by Florian Klaempfl
Target OS: Win32 for i386
Compiling tw2242x.pp
tw2242x.pp(16386,7) Fatal: Procedure too complex, it requires too many 
registers

Fatal: Compilation aborted

Truncated at line 16380:
Delphi 7:
E:\FPC\svn\fixes_2_4\tests\webtbf>dcc32 tw2242xtrunc.pp
Borland Delphi Version 15.0
Copyright (c) 1983,2002 Borland Software Corporation
tw2242xtrunc.pp(16382)
16383 lines, 0.16 seconds, 256684 bytes code, 1801 bytes data.

FPC:
E:\FPC\svn\fixes_2_4\tests\webtbf>ppc386 tw2242xtrunc.pp
Free Pascal Compiler version 2.4.0 [2009/12/18] for i386
Copyright (c) 1993-2009 by Florian Klaempfl
Target OS: Win32 for i386
Compiling tw2242xtrunc.pp
Linking tw2242xtrunc.exe
16381 lines compiled, 12.3 sec , 370736 bytes code, 1864 bytes data

Hmm. ;-)
Please take it with humor. :-)

Martin