http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54870
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |ebotcazou at gcc dot |gnu.org |gnu.org --- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-10-13 22:06:12 UTC --- Created attachment 28443 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28443 Reduced testcase The dse2 dump reads: dse: local deletions = 0, global deletions = 1, spill deletions = 0 starting the processing of deferred insns deleting insn with uid = 25. ending the processing of deferred insns but the memory location stored to (insn 25 27 154 2 (set (mem/c:SI (plus:DI (reg/f:DI 30 %fp) (const_int 2039 [0x7f7])) [6 A.1+16 S4 A64]) (reg:SI 1 %g1 [136])) array_constructor_4.f90:4 61 {*movsi_insn} (nil)) is read by a subsequent call to memcpy.