Use box tests to check if the light analysis mode (without analyzing bodies when possible) produces the same result as the complete analysis. See also the next commit in which light analysis mode is applied. Note that no tests were changed.

compiler/testData/codegen/light-analysis/boxingOptimization/safeCallWithElvis.txt

@@ -0,0 +1,14 @@
+public final class A {
+    private final field x: int
+    private final @org.jetbrains.annotations.Nullable field y: A
+    public method <init>(p0: int, @org.jetbrains.annotations.Nullable p1: A): void
+    public final method getX(): int
+    public final @org.jetbrains.annotations.Nullable method getY(): A
+}
+
+
+public final class SafeCallWithElvisKt {
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static method check(@org.jetbrains.annotations.Nullable p0: A): int
+    public final static method checkLeftAssoc(@org.jetbrains.annotations.Nullable p0: A): int
+}