Track predecessors as well as successors in the CFG

2016-07-21 12:36:51 -07:00
parent 505d49ec41
commit a4126108a0
2 changed files with 61 additions and 18 deletions
--- a/cranelift/src/tools/print_cfg.rs
+++ b/cranelift/src/tools/print_cfg.rs
@@ -146,7 +146,7 @@ impl<T: Write> CFGPrinter<T> {
    }

    fn cfg_connections(&mut self, cfg: &ControlFlowGraph) {
-        for (ref ebb, ref predecessors) in cfg.iter() {
+        for (ref ebb, ref predecessors) in cfg.predecessors_iter() {
            for &(parent, inst) in *predecessors {
                self.append(&format!("{}:{} -> {}", parent, inst, ebb));
                self.newline();