diff options
Diffstat (limited to 'gcc/ddg.c')
| -rw-r--r-- | gcc/ddg.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/gcc/ddg.c b/gcc/ddg.c index d06bdbb5448..856fa4e6800 100644 --- a/gcc/ddg.c +++ b/gcc/ddg.c @@ -197,11 +197,6 @@ create_ddg_dep_from_intra_loop_link (ddg_ptr g, ddg_node_ptr src_node, } } - /* If a true dep edge enters the branch create an anti edge in the - opposite direction to prevent the creation of reg-moves. */ - if ((DEP_TYPE (link) == REG_DEP_TRUE) && JUMP_P (dest_node->insn)) - create_ddg_dep_no_link (g, dest_node, src_node, ANTI_DEP, REG_DEP, 1); - latency = dep_cost (link); e = create_ddg_edge (src_node, dest_node, t, dt, latency, distance); add_edge_to_ddg (g, e); @@ -306,8 +301,11 @@ add_cross_iteration_register_deps (ddg_ptr g, df_ref last_def) gcc_assert (first_def_node); + /* Always create the edge if the use node is a branch in + order to prevent the creation of reg-moves. */ if (DF_REF_ID (last_def) != DF_REF_ID (first_def) - || !flag_modulo_sched_allow_regmoves) + || !flag_modulo_sched_allow_regmoves + || JUMP_P (use_node->insn)) create_ddg_dep_no_link (g, use_node, first_def_node, ANTI_DEP, REG_DEP, 1); |