Subject: Re: Changes to crunchgen
To: Nathan J. Williams <nathanw@MIT.EDU>
From: Bill Sommerfeld <firstname.lastname@example.org>
Date: 10/03/2001 17:00:14
What I've observed is that, with egcs (old toolchain) on i386, you
-Os < -O < -O2
but you sometimes see:
-O < -Os < -O2
-Os turns off certain optimizations which tend to bloat code size and
increase instruction count; it turned out that, for i386, it reduced
instruction count but increased object code size for the one case I
looked at in detail.
The differences were often small, but with our install media commonly
very close to the limit, a few bytes can make a difference..