id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
152	Apply performance options	rudi		"Since we need to use any piece of performance we can get and we don't have to support i386 CPUs, I suggest to let qmake generate the compiler options (for GCC4.x): 

-march=i486 -mtune=generic

Don't expect wonders from that, but a small speed gain can be measured. The down side is, that the created code grows a bit in size.
"	task	closed	minor	Qt 4.6.2	General	4.5.1 GA	low	fixed