changes

cranelift/codegen/src/machinst/blockorder.rs

@@ -258,13 +258,15 @@ impl BlockLoweringOrder {
                                 match lb {
                                     LoweredBlock::Orig { block, cold, .. } => {
                                         match lb_to_bindex.get(&LoweredBlock::Orig { block: *block, cold: *cold, indirect_branch_target: indirect_branch_target_clif_blocks.contains(block) } ) {
-                                            Some(idx) => idx,
+                                            Some(idx) => *idx,
                                             None => {
                                                 panic!("Trying to hashlookup {:?} in HashMap: {:?}", lb, lb_to_bindex);
                                             }
                                         }
                                     },
-                                    _ => panic!("Invalid block type in block_succs")
+                                    LoweredBlock::CriticalEdge { .. } => {
+                                        lb_to_bindex[&lb]
+                                    }
                                 }
                             }));