On Friday 09 February 2007 18:24, Ralf Corsepius wrote: > There are reasons why certain optimizations are in -O3 and why they are > not in -O2, e.g. because some of them do not provide sufficient > performance gains, some of them because they are too architecture > specific, some of them because they are unsafe, some of them because > they are considered unstable/experimental. According to the gcc manpage -O3 enables only three more optimizationes than -O3 does: -finline-functions -funswitch-loops -fgcse-after-reload Are all of them bad or is there more optimization done than is described there? Regards, Till
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