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[Bug target/23338] -march=i686 -O2 generates smaller code that -march=i686 -Os
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Aug 2005 19:56:07 -0000
- Subject: [Bug target/23338] -march=i686 -O2 generates smaller code that -march=i686 -Os
- References: <20050811184654.23338.dann@godzilla.ics.uci.edu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-11 19:56 -------
Confirmed. Note -march=i486 -O2 generates the same code as -Os i686 which means that this might
want to be enabled if we have a large offset and -Os.
Another example:
int i;
void foo (void)
{
i = 0;
}
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
GCC target triplet|i686-pc-linux-gnu |i686-*-*
Keywords| |missed-optimization
Last reconfirmed|0000-00-00 00:00:00 |2005-08-11 19:56:01
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23338