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Re: gcc compile-time performance
- From: "David S. Miller" <davem at redhat dot com>
- To: dewar at gnat dot com
- Cc: gdr at codesourcery dot com, scott at coyotegulch dot com, gcc at gcc dot gnu dot org
- Date: Sat, 18 May 2002 21:31:52 -0700 (PDT)
- Subject: Re: gcc compile-time performance
- References: <20020518153213.34456F2A59@nile.gnat.com>
From: dewar@gnat.com (Robert Dewar)
Date: Sat, 18 May 2002 11:32:13 -0400 (EDT)
It is much harder than you think to retrofit speed to a compiler. Sure you
can do some investigation work, and try to be more careful about adding
stuff that slows down GCC, but this is likely at best to improve things
by 20-40% if you are realistic.
Totally absurd, as evidenced by my 5 minute hack that got %13
due to stupidity in cselib.