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Diffstat (limited to 'gcc/gimple-loop-interchange.cc')
| -rw-r--r-- | gcc/gimple-loop-interchange.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/gimple-loop-interchange.cc b/gcc/gimple-loop-interchange.cc index 43045c54..43ef112 100644 --- a/gcc/gimple-loop-interchange.cc +++ b/gcc/gimple-loop-interchange.cc @@ -1043,8 +1043,11 @@ tree_loop_interchange::valid_data_dependences (unsigned i_idx, unsigned o_idx, continue; /* Be conservative, skip case if either direction at i_idx/o_idx - levels is not '=' (for the inner loop) or '<'. */ - if (dist_vect[i_idx] < 0 || dist_vect[o_idx] <= 0) + levels is not '=' or '<'. */ + if (dist_vect[i_idx] < 0 + || (DDR_REVERSED_P (ddr) && dist_vect[i_idx] > 0) + || dist_vect[o_idx] < 0 + || (DDR_REVERSED_P (ddr) && dist_vect[o_idx] > 0)) return false; } } |