ir: implement dominator tree computation

1 files changed, 3 insertions, 0 deletions

diff --git a/ir/dump.c b/ir/dump.c
index f7d005c..7e7d650 100644
--- a/ir/dump.c
+++ b/ir/dump.c
@@ -219,6 +219,9 @@ dumpblk(struct function *fn, struct block *blk)
          bfmt(out, " @%d", blkpred(blk, i)->id);
       }
    }
+   if (fn->prop & FNDOM && blk->idom) {
+      bfmt(out, "\t; idom: @%d", blk->idom->id);
+   }
    ioputc(out, '\n');
    for (i = 0; i < blk->phi.n; ++i) {
       struct instr *phi = &instrtab[blk->phi.p[i]];