This patch http://gcc.gnu.org/ml/gcc-patches/2004-12/msg00701.html
causes a regression on i386. -- Summary: [3.4 regression] -march=pentium4 -O2 causes ICE Product: gcc Version: 3.4.4 Status: UNCONFIRMED Severity: critical Priority: P2 Component: target AssignedTo: rth at redhat dot com ReportedBy: hjl at lucon dot org CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18932