inline single-use function across loop (#2594)

2017-12-14 19:24:54 +08:00
parent 3f18a61532
commit 90313875f7
2 changed files with 80 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3862,12 +3862,15 @@ merge(Compressor.prototype, {
            }
        }
        if (fn instanceof AST_Function) {
+            var def;
            if (compressor.option("inline")
-                && exp === fn
-                && !fn.name
                && !fn.uses_arguments
                && !fn.uses_eval
                && fn.body.length == 1
+                && (exp === fn ? !fn.name
+                    : compressor.option("unused")
+                        && (def = exp.definition()).references.length == 1
+                        && !recursive_ref(compressor, def))
                && !fn.contains_this()
                && all(fn.argnames, function(arg) {
                    return arg.__unused;