[K/N] ForLoopsLowering: Use get without bounds check in ArrayIterationHandler

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/Ir.kt

@@ -332,6 +332,10 @@ abstract class Symbols<out T : CommonBackendContext>(val context: T, irBuiltIns:
 
     open val unsafeCoerceIntrinsic: IrSimpleFunctionSymbol? = null
 
+    open val getWithoutBCName: Name? = null
+
+    open val setWithoutBCName: Name? = null
+
     companion object {
         fun isLateinitIsInitializedPropertyGetter(symbol: IrFunctionSymbol): Boolean =
             symbol is IrSimpleFunctionSymbol && symbol.owner.let { function ->

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/loops/handlers/IndexedGetIterationHandlers.kt

@@ -24,6 +24,7 @@ import org.jetbrains.kotlin.ir.util.getPropertyGetter
 import org.jetbrains.kotlin.ir.util.getSimpleFunction
 import org.jetbrains.kotlin.ir.util.isPrimitiveArray
 import org.jetbrains.kotlin.name.FqName
+import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.util.OperatorNameConventions
 
 /** Builds a [HeaderInfo] for iteration over iterables using the `get / []` operator and an index. */
@@ -79,9 +80,12 @@ internal class ArrayIterationHandler(context: CommonBackendContext) : IndexedGet
     override val IrType.sizePropertyGetter
         get() = getClass()!!.getPropertyGetter("size")!!.owner
 
+    private val getFunctionName: Name
+        get() = context.ir.symbols.getWithoutBCName ?: OperatorNameConventions.GET
+
     override val IrType.getFunction
         get() = getClass()!!.functions.single {
-            it.name == OperatorNameConventions.GET &&
+            it.name == getFunctionName &&
                     it.valueParameters.size == 1 &&
                     it.valueParameters[0].type.isInt()
         }

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt

@@ -575,6 +575,10 @@ internal class KonanSymbols(
     val topLevelSuite    = getKonanTestClass("TopLevelSuite")
     val testFunctionKind = getKonanTestClass("TestFunctionKind")
 
+    override val getWithoutBCName: Name? = KonanNameConventions.getWithoutBC
+
+    override val setWithoutBCName: Name? = KonanNameConventions.setWithoutBC
+
     private val testFunctionKindCache = TestProcessor.FunctionKind.values().associate {
         val symbol = if (it.runtimeKindString.isEmpty())
             null