enhance `side_effects` (#3383)

3 files changed, 24 insertions, 10 deletions

diff --git a/test/compress/conditionals.js b/test/compress/conditionals.js
index 78c0ca24..a208165f 100644
--- a/test/compress/conditionals.js
+++ b/test/compress/conditionals.js
@@ -1416,3 +1416,22 @@ issue_3271: {
     }
     expect_stdout: "1 1"
 }
+
+iife_condition: {
+    options = {
+        conditionals: true,
+        side_effects: true,
+    }
+    input: {
+        if (function() {
+            return console;
+        }())
+            console.log("PASS");
+    }
+    expect: {
+        !function() {
+            return console;
+        }() || console.log("PASS");
+    }
+    expect_stdout: "PASS"
+}
diff --git a/test/compress/issue-1639.js b/test/compress/issue-1639.js
index 80d45a76..1579e06e 100644
--- a/test/compress/issue-1639.js
+++ b/test/compress/issue-1639.js
@@ -1,4 +1,3 @@
-
 issue_1639_1: {
     options = {
         booleans: true,
@@ -12,7 +11,6 @@ issue_1639_1: {
     }
     input: {
         var a = 100, b = 10;
-
         var L1 = 5;
         while (--L1 > 0) {
             if ((--b), false) {
@@ -21,7 +19,6 @@ issue_1639_1: {
                 }
             }
         }
-
         console.log(a, b);
     }
     expect: {
@@ -29,7 +26,7 @@ issue_1639_1: {
             if (--b, 0) var ignore = 0;
         console.log(a, b);
     }
-    expect_stdout: true
+    expect_stdout: "100 6"
 }
 
 issue_1639_2: {
@@ -44,25 +41,23 @@ issue_1639_2: {
     }
     input: {
         var a = 100, b = 10;
-
         function f19() {
             if (++a, false)
                 if (a)
                     if (++a);
         }
         f19();
-
         console.log(a, b);
     }
     expect: {
         var a = 100, b = 10;
         function f19() {
-            ++a, 0;
+            ++a, 1;
         }
         f19(),
         console.log(a, b);
     }
-    expect_stdout: true
+    expect_stdout: "101 10"
 }
 
 issue_1639_3: {
@@ -84,5 +79,5 @@ issue_1639_3: {
         a++,
         console.log(a, b);
     }
-    expect_stdout: true
+    expect_stdout: "101 10"
 }
diff --git a/test/compress/sequences.js b/test/compress/sequences.js
index 0670ab53..29cede40 100644
--- a/test/compress/sequences.js
+++ b/test/compress/sequences.js
@@ -702,7 +702,7 @@ side_effects_cascade_3: {
     }
     expect: {
         function f(a, b) {
-            !(b += a) && ((b = a) || (b -= a, b ^= a)),
+            (b += a) || (b = a) || (b -= a, b ^= a),
             a--;
         }
     }