------- Comment #32 from jv244 at cam dot ac dot uk 2009-01-14 06:49 ------- (In reply to comment #30) > Subject: Re: [graphite] several ICEs with CP2K (summary) > > Thanks for the clarification, I managed to reproduce the fail. The > problem comes from the fact that we do not generate code for a scalar > reduction that is not detected as a scalar reduction with the variable > connection$dim$1$lbound. > > In the attached output from debug_loops (3) I selected the region of > code containing both the original loops: loop_3 and loop_4 and the > code generated by graphite with -fgraphite-identity: loop_22, loop_23. > > In loop_22 the computation on connection$dim$1$lbound disappears. > I wonder what this variable stands for: it is not used elsewhere in the > debug_loops (3) output of change_bond_length function, and I suspect > that this is a global variable whose value is needed elsewhere outside > the change_bond_length function. >
This variable is a local, I believe, it is part of the array descriptor of the (local variable): INTEGER, ALLOCATABLE, DIMENSION(:, :) :: connection > The bug is in the detection of scalar reductions. > > Sebastian > -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38431
