I think this is the cause of PR 38686 but I could be wrong. Anyways gcc.c-torture/execute/memset-3.c fails with -march=pentium-m -O1
-- Summary: [4.4 Regression] gcc.c-torture/execute/memset-3.c Fails with -march=pentium-m -O1 Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org GCC target triplet: i686-pc-linux-gnu OtherBugsDependingO 38686 nThis: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38708