[Bug fortran/54870] [4.8 regression] gfortran.dg/array_constructor_4.f90 FAILs

[ebotcazou at gcc dot gnu.org]

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.