fix corner case in sign propagation (#3696)

- migrate de-facto functionality to `evaluate` fixes #3695
2020-01-28 22:44:18 +08:00
parent b499e03f82
commit 87119e44a0
3 changed files with 30 additions and 9 deletions
--- a/test/compress/issue-1770.js
+++ b/test/compress/issue-1770.js
@@ -46,7 +46,7 @@ mangle_props: {
            obj[1/0],
            obj["Infinity"],
            obj[-1/0],
-            obj[-1/0],
+            obj[-(1/0)],
            obj["-Infinity"],
            obj[null],
            obj["null"]