Philipp Thomas schrieb in 0,9K (24 Zeilen):
- Wolfgang Weisselberg (weissel@netcologne.de) [20000415 03:19]:
Da sind Optionen wie -fschedule-insns2 ab Pentium aufwärts schon viel sinnvoller.
Welcher durch -O2 angeschaltet wird.
Njet. Schau mal wahlweise in "(gcc.info)Optimize Options"
The following options control specific optimizations. The `-O2' option turns on all of these optimizations except `-funroll-loops' `-funroll-all-loops', and `-fstrict-aliasing'. [...] `-fstrength-reduce' `-fthread-jumps' `-fcse-follow-jumps' [...] `-fdelayed-branch' `-fschedule-insns' `-fschedule-insns2' [...]
oder in der gcc Quellcode, dann wirst du sehen, dass dem nicht so ist.
-*-*-*-*-*-*-*-*-*-*-*-*-*-schnipp-*-*-*-*-*-*-*-*-*-*-*-*-*-*- $ cat /etc/SuSE-release SuSE Linux 6.4 (i386) VERSION = 6.4 $ rpm -q gcc gcc-2.95.2-19 $ tar -xzf urlview-0.7.tar.gz $ cd urlview-0.7/ $ ./configure [...] $ make CFLAGS="-O2 -DURLVIEW -Dunix" [...] $ md5sum urlview e2cf2dea9624b85c3f904ebeb69f500b urlview $ make clean [...] $ make CFLAGS="-O2 -fschedule-insns2 -DURLVIEW -Dunix" [...] $ md5sum urlview e2cf2dea9624b85c3f904ebeb69f500b urlview $ make clean [...] $ make CFLAGS="-O2 -fno-schedule-insns2 -DURLVIEW -Dunix" [...] $ md5sum urlview f059405786bc94fc8785efc9942b93c2 urlview -*-*-*-*-*-*-*-*-*-*-*-*-*-schnapp-*-*-*-*-*-*-*-*-*-*-*-*-*-*- Say again? -Wolfgang -- Finagle's First Law: If an experiment works, something has gone wrong. --------------------------------------------------------------------- To unsubscribe, e-mail: suse-linux-unsubscribe@suse.com For additional commands, e-mail: suse-linux-help@suse.com