On x86_64-unknown-linux-gnu at r163221 I see the following testsuite regression:
FAIL: gfortran.dg/array_memcpy_3.f90 -O scan-tree-dump-times original "memcpy|(ref-all.*ref-all)" 2 -- Summary: [4.6 Regression] FAIL: gfortran.dg/array_memcpy_3.f90 Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: janus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45275