Messages in this thread | | | Date | Fri, 22 Jan 1999 19:02:08 +0100 (CET) | From | Henrik Olsen <> | Subject | Re: -fno-strength-reduce |
| |
On Fri, 22 Jan 1999, Matti Aarnio wrote: > > From: Arvind Sankar <arvinds@mit.edu> > > Why is this option given to the compiler? > > Tradition. > > At some platforms (all?) at least earlier versions of GCC did > produce bogus code if -O(2)'s default '-fstrength-reduce' mode > was left on. > > When that bug finally got fixed (has it been fixed?), I don't > know. > It was fixed with GCC 2.7.2.3, but it's still in because only one person actually bothered to make a speed comparison and post the result to the list, this comparison showed that any gain from dropping the option is too small to be measurable, end ends up in the noice. As a result, Linus didn't think removing it was worth the bother.
-- Henrik Olsen, Dawn Solutions I/S URL=http://www.iaeste.dk/~henrik/ Get the rest there.
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |