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Diffstat (limited to 'gcc/tree-ssa-coalesce.c')
| -rw-r--r-- | gcc/tree-ssa-coalesce.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/tree-ssa-coalesce.c b/gcc/tree-ssa-coalesce.c index 4e3a5a3df83..1b63635881b 100644 --- a/gcc/tree-ssa-coalesce.c +++ b/gcc/tree-ssa-coalesce.c @@ -589,6 +589,24 @@ ssa_conflicts_merge (ssa_conflicts_p ptr, unsigned x, unsigned y) } +/* Dump a conflicts graph. */ + +static void +ssa_conflicts_dump (FILE *file, ssa_conflicts_p ptr) +{ + unsigned x; + + fprintf (file, "\nConflict graph:\n"); + + for (x = 0; x < ptr->size; x++) + if (ptr->conflicts[x]) + { + fprintf (dump_file, "%d: ", x); + dump_bitmap (file, ptr->conflicts[x]); + } +} + + /* This structure is used to efficiently record the current status of live SSA_NAMES when building a conflict graph. LIVE_BASE_VAR has a bit set for each base variable which has at least one @@ -1302,6 +1320,8 @@ coalesce_ssa_name (void) /* Build a conflict graph. */ graph = build_ssa_conflict_graph (liveinfo); delete_tree_live_info (liveinfo); + if (dump_file && (dump_flags & TDF_DETAILS)) + ssa_conflicts_dump (dump_file, graph); sort_coalesce_list (cl); |