improve inline efficiency (#2188)

... by teaching `collapse_vars` some new tricks. fixes #2187
2017-07-02 01:05:14 +08:00
parent 7659ea1d2e
commit d40950b741
6 changed files with 119 additions and 69 deletions
--- a/test/compress/functions.js
+++ b/test/compress/functions.js
@@ -468,11 +468,9 @@ issue_2114_1: {
    }
    expect: {
        var c = 0;
-        !function() {
-            0;
-        }((c += 1, c = 1 + c, function() {
+        c = 1 + (c += 1), function() {
            var b = void (b && (b.b += (c += 1, 0)));
-        }()));
+        }();
        console.log(c);
    }
    expect_stdout: "2"