As reported at http://gcc.gnu.org/ml/gcc-patches/2008-08/msg02068.html, IRA has caused this testcase to fail and it causes a reload to happen.
-- Summary: [4.4 Regression] IRA has caused ppc64-double-1.c to fail Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: missed-optimization, ra Severity: normal Priority: P3 Component: rtl-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org GCC target triplet: powerpc64-*-* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37272