diff options
Diffstat (limited to 'gcc/ddg.c')
| -rw-r--r-- | gcc/ddg.c | 26 |
1 files changed, 20 insertions, 6 deletions
@@ -166,6 +166,9 @@ create_ddg_dep_from_intra_loop_link (ddg_ptr g, ddg_node_ptr src_node, else if (DEP_TYPE (link) == REG_DEP_OUTPUT) t = OUTPUT_DEP; + gcc_assert (!DEBUG_INSN_P (dest_node->insn) || t == ANTI_DEP); + gcc_assert (!DEBUG_INSN_P (src_node->insn) || DEBUG_INSN_P (dest_node->insn)); + /* We currently choose not to create certain anti-deps edges and compensate for that by generating reg-moves based on the life-range analysis. The anti-deps that will be deleted are the ones which @@ -209,6 +212,9 @@ create_ddg_dep_no_link (ddg_ptr g, ddg_node_ptr from, ddg_node_ptr to, enum reg_note dep_kind; struct _dep _dep, *dep = &_dep; + gcc_assert (!DEBUG_INSN_P (to->insn) || d_t == ANTI_DEP); + gcc_assert (!DEBUG_INSN_P (from->insn) || DEBUG_INSN_P (to->insn)); + if (d_t == ANTI_DEP) dep_kind = REG_DEP_ANTI; else if (d_t == OUTPUT_DEP) @@ -277,10 +283,11 @@ add_cross_iteration_register_deps (ddg_ptr g, df_ref last_def) /* Add true deps from last_def to it's uses in the next iteration. Any such upwards exposed use appears before the last_def def. */ - create_ddg_dep_no_link (g, last_def_node, use_node, TRUE_DEP, + create_ddg_dep_no_link (g, last_def_node, use_node, + DEBUG_INSN_P (use_insn) ? ANTI_DEP : TRUE_DEP, REG_DEP, 1); } - else + else if (!DEBUG_INSN_P (use_insn)) { /* Add anti deps from last_def's uses in the current iteration to the first def in the next iteration. We do not add ANTI @@ -417,6 +424,8 @@ build_intra_loop_deps (ddg_ptr g) for (j = 0; j <= i; j++) { ddg_node_ptr j_node = &g->nodes[j]; + if (DEBUG_INSN_P (j_node->insn)) + continue; if (mem_access_insn_p (j_node->insn)) /* Don't bother calculating inter-loop dep if an intra-loop dep already exists. */ @@ -458,10 +467,15 @@ create_ddg (basic_block bb, int closing_branch_deps) if (! INSN_P (insn) || GET_CODE (PATTERN (insn)) == USE) continue; - if (mem_read_insn_p (insn)) - g->num_loads++; - if (mem_write_insn_p (insn)) - g->num_stores++; + if (DEBUG_INSN_P (insn)) + g->num_debug++; + else + { + if (mem_read_insn_p (insn)) + g->num_loads++; + if (mem_write_insn_p (insn)) + g->num_stores++; + } num_nodes++; } |