From ac074207c79c412fb4424ef746455da968fc12db Mon Sep 17 00:00:00 2001
From: Elena Lepilkina <Elena.Lepilkina@jetbrains.com>
Date: Tue, 8 Jun 2021 15:39:12 +0300
Subject: [PATCH] [K/N] ForLoopsLowering: Use get without bounds check in
 ArrayIterationHandler

---
 .../src/org/jetbrains/kotlin/backend/common/ir/Ir.kt        | 4 ++++
 .../lower/loops/handlers/IndexedGetIterationHandlers.kt     | 6 +++++-
 .../src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt         | 4 ++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/Ir.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/Ir.kt
index 3a84025eb40..d2d5b42a30b 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/ir/Ir.kt
+++ b/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 ->
diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/loops/handlers/IndexedGetIterationHandlers.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/loops/handlers/IndexedGetIterationHandlers.kt
index 69c50a682cf..fc6082cf631 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/loops/handlers/IndexedGetIterationHandlers.kt
+++ b/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()
         }
diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt
index b4147a5ea97..2da05476d42 100644
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/Ir.kt
+++ b/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