JS/Inlining: introduce removal of expression statements without side effects

2016-05-05 12:27:33 +03:00
parent 551ed28d84
commit 65876c36eb
14 changed files with 508 additions and 11 deletions
@@ -0,0 +1,67 @@
+var global = 0;
+
+function se() {
+    return ++global;
+}
+
+function se2(value) {
+    ++global;
+    return value;
+}
+
+function test1() {
+    se(); se(); se(); se(); se();
+    se(); se(); se(); se(); se();
+    se(); se(); se(); se(); se();
+    se(); se(); se(); se(); se();
+    se(); se(); se(); se(); se();
+    se(); se(); se(); se(); se();
+    se(); se(); se();
+}
+
+function test2() {
+    try {
+        se() in se();
+        return "fail2a: `in` should not be removed"
+    }
+    catch (e) {
+        // Do nothing
+    }
+
+    try {
+        se() instanceof se();
+        return "fail2b: `instanceof` should not be removed"
+    }
+    catch (e) {
+        // Do nothing
+    }
+
+    return "OK"
+}
+
+function test3() {
+    var x = true;
+    var y = false;
+
+    se2(true);
+    x && se2(true);
+    se2(true) && se2(true);
+
+    se2(false);
+    y || se2(false);
+    se2(false) || se2(false);
+}
+
+function box() {
+    test1();
+    if (global != 33) return "fail1: " + global;
+
+    var result = test2();
+    if (result !== "OK") return result;
+    if (global != 37) return "fail2: " + global;
+
+    test3();
+    if (global != 45) return "fail3: " + global;
+
+    return "OK";
+}
@@ -0,0 +1,76 @@
+var global = 0;
+
+function se() {
+    return ++global;
+}
+
+function se2(value) {
+    ++global;
+    return value;
+}
+
+function test1() {
+    var $a = (se() - se() + se()) * se();
+    var $b = se() % se() / se();
+    var $c = se() >> se();
+    var $d = se() << se();
+    var $e = se() >>> se();
+    var $f = se() | se() & se() ^ se();
+    var $g1 = se() == se();
+    var $g2 = se() === se();
+    var $g3 = se() != se();
+    var $g4 = se() !== se();
+    var $h1 = se() > se();
+    var $h2 = se() >= se();
+    var $h3 = se() < se();
+    var $h4 = se() <= se();
+}
+
+function test2() {
+    try {
+        var $a = se() in se();
+        return "fail2a: `in` should not be removed"
+    }
+    catch (e) {
+        // Do nothing
+    }
+
+    try {
+        var $b = se() instanceof se();
+        return "fail2b: `instanceof` should not be removed"
+    }
+    catch (e) {
+        // Do nothing
+    }
+
+    return "OK"
+}
+
+function test3() {
+    var x = true;
+    var y = false;
+
+    var $a1 = se2(true) && x;
+    var $a2 = x && se2(true);
+    var $a3 = se2(true) && se2(true);
+    var $a4 = x && x;
+
+    var $b1 = se2(false) || y;
+    var $b2 = y || se2(false);
+    var $b3 = se2(false) || se2(false);
+    var $b4 = y || y;
+}
+
+function box() {
+    test1();
+    if (global != 33) return "fail1: " + global;
+
+    var result = test2();
+    if (result !== "OK") return result;
+    if (global != 37) return "fail2: " + global;
+
+    test3();
+    if (global != 45) return "fail3: " + global;
+
+    return "OK";
+}
@@ -0,0 +1,22 @@
+var global = 0;
+
+function se(value) {
+    ++global;
+    return value;
+}
+
+function test() {
+    var x = true;
+    se(x);
+    x ? se("foo") : se("bar");
+    x || se("bar");
+    x && se("foo");
+    se(x) ? se("foo") : se("bar");
+}
+
+function box() {
+    test();
+    if (global != 5) return "fail1: " + global;
+
+    return "OK";
+}
@@ -0,0 +1,23 @@
+var global = 0;
+
+function se(value) {
+    ++global;
+    return value;
+}
+
+function test() {
+    var x = true;
+    var $a = se(x) ? "foo" : "bar";
+    var $b = x ? "foo" : "bar";
+    var $c = x ? se("foo") : se("bar");
+    var $d = x ? "foo" : se("bar");
+    var $e = x ? se("foo") : "bar";
+    var $f = se(x) ? se("foo") : se("bar");
+}
+
+function box() {
+    test();
+    if (global != 5) return "fail1: " + global;
+
+    return "OK";
+}
@@ -0,0 +1,23 @@
+var global = 0;
+
+function se(value) {
+    ++global;
+    return value;
+}
+
+function test() {
+    se(2);
+    se(3);
+    se('foo');
+    se('bar');
+    se('y');
+    se(3);
+    se('null');
+}
+
+function box() {
+    test();
+    if (global != 7) return "fail: " + test();
+
+    return "OK";
+}
@@ -0,0 +1,21 @@
+var global = 0;
+
+function se(value) {
+    ++global;
+    return value;
+}
+
+function test() {
+    var $a = { x: se(2), y: se(3) };
+    var $b = [se("foo"), se("bar")];
+    var $c = "x" + se("y");
+    var $d = 2 + se(3);
+    var $e = se("null") + null;
+}
+
+function box() {
+    test();
+    if (global != 7) return "fail: " + test();
+
+    return "OK";
+}
@@ -0,0 +1,41 @@
+var global = 0;
+
+function se(value) {
+    ++global;
+    return value;
+}
+
+function test1() {
+    se(23);
+    se(23);
+    se(false);
+    se(-1);
+    se(23);
+    se(23);
+}
+
+function test2() {
+    ++global;
+    global++;
+    --global;
+    global--;
+}
+
+function test3() {
+    var obj = { x: 2, y: 3};
+    delete obj.x;
+    return ("x" in obj) + ":" + ("y" in obj);
+}
+
+function box() {
+    test1();
+    if (global != 6) return "fail1: " + global;
+
+    test2();
+    if (global != 6) return "fail2: " + global;
+
+    var result = test3();
+    if (result != "false:true") return "fail3: " + result;
+
+    return "OK";
+}
@@ -0,0 +1,41 @@
+var global = 0;
+
+function se(value) {
+    ++global;
+    return value;
+}
+
+function test1() {
+    var $a = +se(23);
+    var $b = -se(23);
+    var $c = !se(false);
+    var $d = ~se(-1);
+    var $e = typeof se(23);
+    var $f = void se(23);
+}
+
+function test2() {
+    var $a = ++global;
+    var $b = global++;
+    var $c = --global;
+    var $d = global--;
+}
+
+function test3() {
+    var obj = { x: 2, y: 3};
+    var $tmp = delete obj.x;
+    return ("x" in obj) + ":" + ("y" in obj);
+}
+
+function box() {
+    test1();
+    if (global != 6) return "fail1: " + global;
+
+    test2();
+    if (global != 6) return "fail2: " + global;
+
+    var result = test3();
+    if (result != "false:true") return "fail3: " + result;
+
+    return "OK";
+}