Basic class members generation.

Split testData into 'classes' and 'expressions'.

compiler/testData/ir/irText/expressions/breakContinue.kt

@@ -0,0 +1,39 @@
+fun test1() {
+    while (true) { break }
+    do { break } while (true)
+    while (true) { continue }
+    do { continue } while (true)
+}
+
+fun test2() {
+    OUTER@while(true) {
+        INNER@while(true) {
+            break@INNER
+            break@OUTER
+        }
+        break@OUTER
+    }
+    OUTER@while(true) {
+        INNER@while(true) {
+            continue@INNER
+            continue@OUTER
+        }
+        continue@OUTER
+    }
+}
+
+fun test3() {
+    L@while(true) {
+        L@while(true) {
+            break@L
+        }
+        break@L
+    }
+    L@while(true) {
+        L@while(true) {
+            continue@L
+        }
+        continue@L
+    }
+}
+