enhance evaluate, functions & inline (#3931)

test/compress/collapse_vars.js

@@ -62,7 +62,7 @@ collapse_vars_side_effects_1: {
     expect: {
         function f1() {
             var s = "abcdef", i = 2;
-            console.log.bind(console)(s.charAt(i++), s.charAt(i++), s.charAt(i++), 7);
+            console.log.bind(console)(s.charAt(i++), s.charAt(i++), s.charAt(4), 7);
         }
         function f2() {
             var s = "abcdef", i = 2;
@@ -74,13 +74,14 @@ collapse_vars_side_effects_1: {
                 log = console.log.bind(console),
                 x = s.charAt(i++),
                 y = s.charAt(i++);
-            log(x, s.charAt(i++), y, 7);
+            log(x, s.charAt(4), y, 7);
         }
         function f4() {
-            var i = 10,
-                x = i += 2,
-                y = i += 3;
-            console.log.bind(console)(x, i += 4, y, 19);
+            var i = 10;
+            i += 2,
+            i += 3,
+            i += 4;
+            console.log.bind(console)(12, 19, 15, 19);
         }
         f1(), f2(), f3(), f4();
     }

test/compress/evaluate.js

@@ -2485,3 +2485,62 @@ issue_3920: {
     }
     expect_stdout: "false"
 }
+
+inlined_increment_prefix: {
+    options = {
+        evaluate: true,
+        inline: true,
+        reduce_vars: true,
+        toplevel: true,
+    }
+    input: {
+        var a = 0;
+        (function() {
+            ++a;
+        })();
+        console.log(a += 0);
+    }
+    expect: {
+        var a = 0;
+        void ++a;
+        console.log(a += 0);
+    }
+    expect_stdout: "1"
+}
+
+inlined_increment_postfix: {
+    options = {
+        evaluate: true,
+        inline: true,
+        reduce_vars: true,
+        toplevel: true,
+    }
+    input: {
+        var a = 0;
+        (function() {
+            a++;
+        })();
+        console.log(a += 0);
+    }
+    expect: {
+        var a = 0;
+        void a++;
+        console.log(a += 0);
+    }
+    expect_stdout: "1"
+}
+
+compound_assignment_to_property: {
+    options = {
+        evaluate: true,
+        unsafe: true,
+    }
+    input: {
+        1 + (0..p >>= 0) && console.log("PASS");
+    }
+    expect: {
+        1 + (0..p >>= 0),
+        console.log("PASS");
+    }
+    expect_stdout: "PASS"
+}

test/compress/reduce_vars.js

@@ -2724,8 +2724,8 @@ issue_1814_1: {
     expect: {
         !function() {
             !function(a) {
-                console.log(a++, 42);
-            }(0);
+                console.log(0, 42);
+            }();
         }();
     }
     expect_stdout: "0 42"
@@ -2751,8 +2751,8 @@ issue_1814_2: {
     expect: {
         !function() {
             !function(a) {
-                console.log("321", a++);
-            }(0);
+                console.log("321", 0);
+            }();
         }();
     }
     expect_stdout: "321 0"