[FIR] Implement new completion mode calculator

Note that `testDelegates` now fails due to KT-37638 and
    `testSimpleIn` fails due to problems with type parameters
    of inner classes

compiler/testData/codegen/box/elvis/genericElvisWithNullLHS.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
 

compiler/testData/codegen/box/regressions/kt33638.kt

@@ -1,7 +1,6 @@
 // !LANGUAGE: +NewInference
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class Holder(val list: List<String>?)
 

compiler/testData/diagnostics/tests/generics/innerClasses/simpleIn.fir.fail

@@ -0,0 +1,2 @@
+Failures detected in FirBodyResolveTransformerAdapter, file: /simpleIn.fir.kt
+Cause: java.lang.RuntimeException: While resolving call R|<local>/outer|.set#(R?C|/infer|<R|kotlin/Any|>(String()))

compiler/testData/diagnostics/tests/inference/regressions/kt32250.fir.kt

@@ -1,30 +0,0 @@
-// !LANGUAGE: +NewInference
-// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
-
-interface I {
-    fun foo()
-}
-
-data class Pair<X, Y>(val fst: X, val snd: Y)
-
-class A(f: Pair<Int, (I) -> Unit>? = null)
-
-class B(f: ((I) -> Unit)? = null)
-
-fun main() {
-    val cond = true
-    A(
-        if (cond) {
-            Pair(1, { baz -> baz.<!UNRESOLVED_REFERENCE!>foo<!>() })
-        } else {
-            null
-        }
-    )
-    <!INAPPLICABLE_CANDIDATE!>B<!>(
-        if (cond) {
-            { baz -> baz.<!UNRESOLVED_REFERENCE!>foo<!>() }
-        } else {
-            null
-        }
-    )
-}

compiler/testData/diagnostics/tests/inference/regressions/kt32250.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !LANGUAGE: +NewInference
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE
 

compiler/testData/diagnostics/testsWithStdLib/kt7585/delegate.fir.fail

@@ -0,0 +1,17 @@
+Failures detected in FirImplicitTypeBodyResolveTransformerAdapter, file: /My.kt
+Cause: java.lang.RuntimeException: While resolving call Q|Properties|.R?C|/Properties.calcVal|(<L> = calcVal@fun <implicit>.<anonymous>(): <implicit> {
+    lval y: <implicit> = x#.plus#(IntegerLiteral(1))
+    when () {
+        CMP(>, y#.compareTo#(IntegerLiteral(0))) ->  {
+            MyBase#.derivedWrapper#()
+        }
+        CMP(<, x#.compareTo#(IntegerLiteral(0))) ->  {
+            MyBase#.exoticWrapper#(x#)
+        }
+        else ->  {
+            throw java#.lang#.NullPointerException#(String())
+        }
+    }
+
+}
+)

compiler/testData/diagnostics/testsWithStdLib/kt7585/delegate.fir.kt

@@ -0,0 +1,76 @@
+// !WITH_NEW_INFERENCE
+// NI_EXPECTED_FILE
+// JAVAC_EXPECTED_FILE
+// FILE: Base.java
+
+public interface Base {}
+
+// FILE: Other.java
+
+public interface Other {}
+
+// FILE: Derived.java
+
+public final class Derived<T> implements Base, Other {}
+
+// FILE: Exotic.java
+
+public final class Exotic implements Base, Other {
+
+    int x;
+
+    Exotic(int x) {
+        this.x = x;
+    }
+}
+
+// FILE: Properties.java
+
+import kotlin.jvm.functions.Function0;
+
+class Val<T> {
+
+    Function0<T> initializer;
+
+    Val(Function0<T> initializer) {
+        this.initializer = initializer;
+    }
+
+    T getValue(Object instance, Object metadata) {
+        return initializer.invoke();
+    }
+}
+
+class Properties {
+    static <T> Val<T> calcVal(Function0<T> initializer) {
+        return new Val<T>(initializer);
+    }
+}
+
+// FILE: My.kt
+
+open class Wrapper<out T: Base>(val v: T)
+
+class DerivedWrapper(v: Derived<*>): Wrapper<Derived<*>>(v)
+
+class ExoticWrapper(v: Exotic): Wrapper<Exotic>(v)
+
+object MyBase {
+
+    fun derived() = Derived<String>()
+    fun exotic(x: Int) = Exotic(x)
+
+    fun derivedWrapper() = DerivedWrapper(derived())
+    fun exoticWrapper(x: Int) = ExoticWrapper(exotic(x))
+}
+
+class My(val x: Int) {
+    val wrapper/*: Wrapper<*>*/ by Properties.calcVal {
+        val y = x + 1
+        when {
+            y > 0 -> MyBase.derivedWrapper()
+            x < 0 -> MyBase.exoticWrapper(x)
+            else  -> throw java.lang.NullPointerException("")
+        }
+    }
+}

compiler/testData/diagnostics/testsWithStdLib/kt7585/delegate.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // !WITH_NEW_INFERENCE
 // NI_EXPECTED_FILE
 // JAVAC_EXPECTED_FILE

compiler/testData/ir/irText/expressions/whenUnusedExpression.fir.txt

@@ -3,7 +3,7 @@ FILE fqName:<root> fileName:/whenUnusedExpression.kt
     VALUE_PARAMETER name:b index:0 type:kotlin.Boolean
     VALUE_PARAMETER name:i index:1 type:kotlin.Int
     BLOCK_BODY
-      WHEN type=kotlin.Int? origin=IF
+      WHEN type=kotlin.Int origin=IF
         BRANCH
           if: GET_VAR 'b: kotlin.Boolean declared in <root>.test' type=kotlin.Boolean origin=null
           then: BLOCK type=kotlin.Int origin=WHEN