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Re: optimization options
- To: imarkov at ucla dot edu (IGOR LEONIDOVICH MARKOV)
- Subject: Re: optimization options
- From: Joe Buck <jbuck at Synopsys dot COM>
- Date: Fri, 9 Jul 99 9:22:40 PDT
- Cc: egcs at egcs dot cygnus dot com, imarkov at cs dot ucla dot edu
> The gcc/g++ manual is silent about -O4 and -O5.
And for good reason; both are the same as -O3.
In pgcc, these higher numbers do something, but not in any gcc or
egcs release. The gcc manual describes -O, -O2, and -O3 reasonably
adequately.