replace single-use recursive functions (#2659)

fixes #2628
2017-12-26 21:25:35 +08:00
parent 7f342cb3e3
commit 4832bc5d88
5 changed files with 63 additions and 26 deletions
--- a/test/compress/functions.js
+++ b/test/compress/functions.js
@@ -1345,11 +1345,10 @@ issue_2630_3: {
    expect: {
        var x = 2, a = 1;
        (function() {
-            function f1(a) {
+            (function f1(a) {
                f2();
                --x >= 0 && f1({});
-            }
-            f1(a++);
+            })(a++);
            function f2() {
                a++;
            }
@@ -1424,7 +1423,7 @@ issue_2630_5: {
    expect_stdout: "155"
 }

-recursive_inline: {
+recursive_inline_1: {
    options = {
        inline: true,
        reduce_funcs: true,
@@ -1448,6 +1447,26 @@ recursive_inline: {
    expect: {}
 }

+recursive_inline_2: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }
+        console.log(f(5));
+    }
+    expect: {
+        console.log(function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }(5));
+    }
+    expect_stdout: "120"
+}
+
 issue_2657: {
    options = {
        inline: true,