FIR CFA: remove some redundant node stacks

Honestly the amount of mutable state in the builder makes me somewhat
uneasy.

compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/dfa/Stack.kt

@@ -5,10 +5,6 @@
 
 package org.jetbrains.kotlin.fir.resolve.dfa
 
-import org.jetbrains.kotlin.fir.FirElement
-import org.jetbrains.kotlin.fir.declarations.FirDeclaration
-import org.jetbrains.kotlin.fir.resolve.dfa.cfg.CFGNode
-import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
 import org.jetbrains.kotlin.fir.util.asReversedFrozen
 
 abstract class Stack<T> {
@@ -47,61 +43,3 @@ private class StackImpl<T>(vararg values: T) : Stack<T>() {
 
     override fun all(): List<T> = stack.asReversedFrozen()
 }
-
-class NodeStorage<T : FirElement, N : CFGNode<T>> : Stack<N>(){
-    private val stack: Stack<N> = StackImpl()
-    private val map: MutableMap<T, N> = mutableMapOf()
-
-    override val size: Int get() = stack.size
-
-    override fun top(): N = stack.top()
-
-    override fun pop(): N = stack.pop().also {
-        map.remove(it.fir)
-    }
-
-    override fun push(value: N) {
-        stack.push(value)
-        map[value.fir] = value
-    }
-
-    operator fun get(key: T): N? {
-        return map[key]
-    }
-
-    override fun reset() {
-        stack.reset()
-        map.clear()
-    }
-
-    override fun all(): List<N> = stack.all()
-}
-
-class SymbolBasedNodeStorage<T, N : CFGNode<T>> : Stack<N>() where T : FirElement {
-    private val stack: Stack<N> = StackImpl()
-    private val map: MutableMap<FirBasedSymbol<*>, N> = mutableMapOf()
-
-    override val size: Int get() = stack.size
-
-    override fun top(): N = stack.top()
-
-    override fun pop(): N = stack.pop().also {
-        map.remove((it.fir as FirDeclaration).symbol)
-    }
-
-    override fun push(value: N) {
-        stack.push(value)
-        map[(value.fir as FirDeclaration).symbol] = value
-    }
-
-    operator fun get(key: FirBasedSymbol<*>): N? {
-        return map[key]
-    }
-
-    override fun reset() {
-        stack.reset()
-        map.clear()
-    }
-
-    override fun all(): List<N> = stack.all()
-}

compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/dfa/cfg/CFGNode.kt

@@ -746,7 +746,7 @@ object FirStub : FirExpression() {
     override fun replaceTypeRef(newTypeRef: FirTypeRef) { assert(newTypeRef.isNothing) }
 }
 
-class FakeExpressionEnterNode(owner: ControlFlowGraph, level: Int) : CFGNode<FirStub>(owner, level) {
+class FakeExpressionEnterNode(owner: ControlFlowGraph, level: Int) : CFGNode<FirStub>(owner, level), GraphEnterNodeMarker, GraphExitNodeMarker {
     init { isDead = true }
 
     override val fir: FirStub = FirStub

compiler/fir/semantics/src/org/jetbrains/kotlin/fir/resolve/dfa/cfg/ControlFlowGraph.kt

@@ -37,6 +37,7 @@ class ControlFlowGraph(val declaration: FirDeclaration?, val name: String, val k
         Class,
         Function,
         AnonymousFunction,
+        AnonymousFunctionCalledInPlace,
         PropertyInitializer,
         FieldInitializer,
         FakeCall,