JS: improve switch elimination

2018-02-20 15:03:24 +03:00
parent 92070d132e
commit eabe21726c
4 changed files with 129 additions and 4 deletions
@@ -0,0 +1,53 @@
+var log = '';
+
+function test1(v) {
+    switch (v) {
+        case 1:
+        case 2:
+            log += 'A';
+            break;
+    }
+    log += 1;
+}
+
+function test2(v) {
+    loop: while(--v) {
+        switch (v) {
+            case 1:
+            case 2:
+                log += 'B';
+                break loop
+        }
+        log += 2;
+    }
+}
+
+function test3(v) {
+}
+
+function test4(v) {
+    log += 'D';
+    log += 4;
+}
+
+function test5(v) {
+    loop: while (--v) {
+        log += 'E';
+        break loop;
+    }
+}
+
+function test6(v) {
+    log += 'F' + v;
+}
+
+function box() {
+    test1(1);
+    test1(3);
+    test2(4);
+    test4(3);
+    test5(3);
+    test6(6);
+
+    return log === 'A112BD4EF6' ? 'OK' : 'fail: ' + log;
+}