Suppress K2 specific warnings in the codebase

^KT-62472

compiler/frontend/cfg/src/org/jetbrains/kotlin/cfg/variable/VariableControlFlowInfo.kt

@@ -21,6 +21,7 @@ interface VariableInitReadOnlyControlFlowInfo :
     fun checkDefiniteInitializationInWhen(merge: VariableInitReadOnlyControlFlowInfo): Boolean
 }
 
+@Suppress("DELEGATED_MEMBER_HIDES_SUPERTYPE_OVERRIDE") // K2 warning suppression, TODO: KT-62472
 class VariableInitControlFlowInfo(map: ImmutableMap<VariableDescriptor, VariableControlFlowState> = ImmutableHashMap.empty()) :
     VariableUsageControlFlowInfo<VariableInitControlFlowInfo, VariableControlFlowState>(map),
     VariableInitReadOnlyControlFlowInfo {
@@ -42,6 +43,7 @@ class VariableInitControlFlowInfo(map: ImmutableMap<VariableDescriptor, Variable
     }
 }
 
+@Suppress("DELEGATED_MEMBER_HIDES_SUPERTYPE_OVERRIDE") // K2 warning suppression, TODO: KT-62472
 class UsageVariableControlFlowInfo(map: ImmutableMap<VariableDescriptor, VariableUseState> = ImmutableHashMap.empty()) :
     VariableUsageControlFlowInfo<UsageVariableControlFlowInfo, VariableUseState>(map),
     VariableUsageReadOnlyControlInfo {
@@ -128,4 +130,4 @@ enum class VariableUseState(private val priority: Int) {
         @JvmStatic
         fun isUsed(variableUseState: VariableUseState?): Boolean = variableUseState != null && variableUseState != UNUSED
     }
-}
+}

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/DiagnosticReporterByTrackingStrategy.kt

@@ -825,6 +825,7 @@ class DiagnosticReporterByTrackingStrategy(
             KtPsiUtil.deparenthesize(it) ?: it
         }
         if (expression != null) {
+            @Suppress("USELESS_IS_CHECK") // K2 warning suppression, TODO: KT-62472
             if (expression.isNull() && expression is KtConstantExpression) {
                 val factory = when (diagnostic) {
                     is ArgumentNullabilityErrorDiagnostic -> NULL_FOR_NONNULL_TYPE

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/KotlinToResolvedCallTransformer.kt

@@ -107,6 +107,7 @@ class KotlinToResolvedCallTransformer(
             }
 
             is CompletedCallResolutionResult, is ErrorCallResolutionResult -> {
+                @Suppress("USELESS_CAST") // K2 warning suppression, TODO: KT-62472
                 val candidate = (baseResolvedCall as SingleCallResolutionResult).resultCallAtom
 
                 val resultSubstitutor =

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ActualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker.kt

@@ -29,7 +29,9 @@ object ActualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker :
         val (actual, expect) = matchActualWithNonFinalExpect(declaration, descriptor, context) ?: return
 
         // The explicit casts won't be necessary when we start compiling kotlin with K2. K1 doesn't build CFG properly
+        @Suppress("USELESS_CAST") // K2 warning suppression, TODO: KT-62472
         declaration as KtClassLikeDeclaration
+        @Suppress("USELESS_CAST") // K2 warning suppression, TODO: KT-62472
         descriptor as ClassifierDescriptorWithTypeParameters
 
         checkSupertypes(expect, actual, context, declaration, descriptor)
@@ -105,7 +107,9 @@ internal fun matchActualWithNonFinalExpect(
     // Common supertype of KtTypeAlias and KtClassOrObject is KtClassLikeDeclaration.
     // Common supertype of TypeAliasDescriptor and ClassDescriptor is ClassifierDescriptorWithTypeParameters.
     // The explicit casts won't be necessary when we start compiling kotlin with K2.
+    @Suppress("USELESS_CAST") // K2 warning suppression, TODO: KT-62472
     declaration as KtClassLikeDeclaration
+    @Suppress("USELESS_CAST") // K2 warning suppression, TODO: KT-62472
     descriptor as ClassifierDescriptorWithTypeParameters
 
     if (!descriptor.isActual) return null

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ExpectActualClassifiersAreInBetaChecker.kt

@@ -27,7 +27,9 @@ object ExpectActualClassifiersAreInBetaChecker : DeclarationChecker {
         // Common supertype of KtTypeAlias and KtClassOrObject is KtClassLikeDeclaration.
         // Common supertype of TypeAliasDescriptor and ClassDescriptor is ClassifierDescriptorWithTypeParameters.
         // The explicit casts won't be necessary when we start compiling kotlin with K2.
+        @Suppress("USELESS_IS_CHECK") // K2 warning suppression, TODO: KT-62472
         check(declaration is KtClassLikeDeclaration)
+        @Suppress("USELESS_IS_CHECK") // K2 warning suppression, TODO: KT-62472
         check(descriptor is ClassifierDescriptorWithTypeParameters)
 
         if (descriptor.isExpect || descriptor.isActual) {