diff --git a/lib/docs/main.js b/lib/docs/main.js
index b217cc462f..6a3e3bd0ef 100644
--- a/lib/docs/main.js
+++ b/lib/docs/main.js
@@ -1152,6 +1152,9 @@ var zigAnalysis;
                 operator += ">>";
                 break;
               }
+              case 9 : {
+                return "@bitCast(" + print_lhs + ", " + print_rhs + ")";
+              }
               default: console.log("operator not handled yet or doesn't exist!");
             };
             if (expr.binOp.wrap) {
diff --git a/src/Autodoc.zig b/src/Autodoc.zig
index abfb5ea3cb..eed8fcc37f 100644
--- a/src/Autodoc.zig
+++ b/src/Autodoc.zig
@@ -669,7 +669,7 @@ const DocData = struct {
             rhs: usize, // index in `exprs`
             // opKind
             // Identify the operator in js
-            // 0: add, 1: sub, 2: mul, 3: div, 4: mod, 5: rem, 6: rem_mod, 7: shl, 8: shr
+            // 0: add, 1: sub, 2: mul, 3: div, 4: mod, 5: rem, 6: rem_mod, 7: shl, 8: shr, 9: bitcast
             // Others binOp are not handled yet
             opKind: usize = 0,
             // flags to operations
@@ -969,6 +969,37 @@ fn walkInstruction(
                 .expr = .{ .int = .{ .value = int } },
             };
         },
+        .bitcast => {
+            const pl_node = data[inst_index].pl_node;
+            const extra = file.zir.extraData(Zir.Inst.Bin, pl_node.payload_index);
+
+            const binop_index = self.exprs.items.len;
+            try self.exprs.append(self.arena, .{ .binOp = .{ .lhs = 0, .rhs = 0 } });
+
+            var lhs: DocData.WalkResult = try self.walkRef(
+                file,
+                parent_scope,
+                extra.data.lhs,
+                false,
+            );
+            var rhs: DocData.WalkResult = try self.walkRef(
+                file,
+                parent_scope,
+                extra.data.rhs,
+                false,
+            );
+
+            const lhs_index = self.exprs.items.len;
+            try self.exprs.append(self.arena, lhs.expr);
+            const rhs_index = self.exprs.items.len;
+            try self.exprs.append(self.arena, rhs.expr);
+            self.exprs.items[binop_index] = .{ .binOp = .{ .lhs = lhs_index, .rhs = rhs_index, .opKind = 9 } };
+
+            return DocData.WalkResult{
+                .typeRef = .{ .type = @enumToInt(Ref.type_type) },
+                .expr = .{ .binOpIndex = binop_index },
+            };
+        },
         .add => {
             const pl_node = data[inst_index].pl_node;
             const extra = file.zir.extraData(Zir.Inst.Bin, pl_node.payload_index);