FIR: set function factory (before it's used in SAM lowering).

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmIrCodegenFactory.kt

@@ -27,6 +27,7 @@ import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
 import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
+import org.jetbrains.kotlin.ir.descriptors.IrFunctionFactory
 import org.jetbrains.kotlin.ir.descriptors.WrappedDeclarationDescriptor
 import org.jetbrains.kotlin.ir.util.DeclarationStubGenerator
 import org.jetbrains.kotlin.ir.util.ExternalDependenciesGenerator
@@ -49,6 +50,7 @@ class JvmIrCodegenFactory(private val phaseConfig: PhaseConfig) : CodegenFactory
         sourceManager: PsiSourceManager,
         createCodegen: (IrClass, JvmBackendContext, IrFunction?) -> ClassCodegen?,
     ) {
+        irModuleFragment.irBuiltins.functionFactory = IrFunctionFactory(irModuleFragment.irBuiltins, symbolTable)
         val extensions = JvmGeneratorExtensions()
         val irProviders = generateTypicalIrProviderList(
             irModuleFragment.descriptor, irModuleFragment.irBuiltins, symbolTable, extensions = extensions

compiler/testData/codegen/box/funInterface/equality/lambdaRuntimeConversion.kt

@@ -1,5 +1,4 @@
 // IGNORE_BACKEND: JS, JS_IR, NATIVE
-// IGNORE_BACKEND_FIR: JVM_IR
 // FILE: test.kt
 
 fun checkEqual(x: Any, y: Any) {

compiler/testData/codegen/box/funInterface/multimodule.kt

@@ -1,6 +1,4 @@
 // !LANGUAGE: +NewInference +FunctionalInterfaceConversion +SamConversionPerArgument +SamConversionForKotlinFunctions
-
-// IGNORE_BACKEND_FIR: JVM_IR
 // SKIP_DCE_DRIVEN
 
 // MODULE: m1

compiler/testData/codegen/box/funInterface/nullableSam.kt

@@ -1,5 +1,4 @@
 // !LANGUAGE: +NewInference +FunctionalInterfaceConversion +SamConversionPerArgument +SamConversionForKotlinFunctions
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 // SKIP_DCE_DRIVEN
 

compiler/testData/codegen/box/sam/equality/lambdaRuntimeConversion.kt

@@ -1,5 +1,4 @@
 // TARGET_BACKEND: JVM
-// IGNORE_BACKEND_FIR: JVM_IR
 // FILE: test.kt
 
 fun checkNotEqual(x: Any, y: Any) {

compiler/testData/codegen/box/sam/nullableSam.kt

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