Use counter loop in intrinsic array constructors

#KT-19149 Fixed Target versions 1.1.5

compiler/backend/src/org/jetbrains/kotlin/codegen/intrinsics/IntrinsicArrayConstructors.kt

@@ -40,7 +40,7 @@ private inline fun <reified T> arrayOf(vararg elements: T): Array<T> = elements
 
 private inline fun <reified T> Array(size: Int, init: (Int) -> T): Array<T> {
     val result = arrayOfNulls<T>(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result as Array<T>
@@ -48,7 +48,7 @@ private inline fun <reified T> Array(size: Int, init: (Int) -> T): Array<T> {
 
 private inline fun DoubleArray(size: Int, init: (Int) -> Double): DoubleArray {
     val result = DoubleArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -56,7 +56,7 @@ private inline fun DoubleArray(size: Int, init: (Int) -> Double): DoubleArray {
 
 private inline fun FloatArray(size: Int, init: (Int) -> Float): FloatArray {
     val result = FloatArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -64,7 +64,7 @@ private inline fun FloatArray(size: Int, init: (Int) -> Float): FloatArray {
 
 private inline fun LongArray(size: Int, init: (Int) -> Long): LongArray {
     val result = LongArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -72,7 +72,7 @@ private inline fun LongArray(size: Int, init: (Int) -> Long): LongArray {
 
 private inline fun IntArray(size: Int, init: (Int) -> Int): IntArray {
     val result = IntArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -80,7 +80,7 @@ private inline fun IntArray(size: Int, init: (Int) -> Int): IntArray {
 
 private inline fun CharArray(size: Int, init: (Int) -> Char): CharArray {
     val result = CharArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -88,7 +88,7 @@ private inline fun CharArray(size: Int, init: (Int) -> Char): CharArray {
 
 private inline fun ShortArray(size: Int, init: (Int) -> Short): ShortArray {
     val result = ShortArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -96,7 +96,7 @@ private inline fun ShortArray(size: Int, init: (Int) -> Short): ShortArray {
 
 private inline fun ByteArray(size: Int, init: (Int) -> Byte): ByteArray {
     val result = ByteArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result
@@ -104,7 +104,7 @@ private inline fun ByteArray(size: Int, init: (Int) -> Byte): ByteArray {
 
 private inline fun BooleanArray(size: Int, init: (Int) -> Boolean): BooleanArray {
     val result = BooleanArray(size)
-    for (i in 0..size - 1) {
+    for (i in result.indices) {
         result[i] = init(i)
     }
     return result

compiler/testData/codegen/bytecodeText/forLoop/intrinsicArrayConstructorsUseCounterLoop.kt

@@ -0,0 +1,29 @@
+fun Int.toTrue() = true
+
+fun testBooleanArray(n: Int) =
+        BooleanArray(n) { it.toTrue() }
+
+fun testByteArray(n: Int) =
+        ByteArray(n) { it.toByte() }
+
+fun testShortArray(n: Int) =
+        ShortArray(n) { it.toShort() }
+
+fun testIntArray(n: Int) =
+        IntArray(n) { it }
+
+fun testLongArray(n: Int) =
+        LongArray(n) { it.toLong() }
+
+fun testFloatArray(n: Int) =
+        FloatArray(n) { it.toFloat() }
+
+fun testDoubleArray(n: Int) =
+        DoubleArray(n) { it.toDouble() }
+
+fun testObjectArray(n: Int) =
+        Array(n) { it as Any }
+
+// 0 IF_ICMPGT
+// 0 IF_CMPEQ
+// 8 IF_ICMPGE

compiler/tests/org/jetbrains/kotlin/codegen/BytecodeTextTestGenerated.java

@@ -1256,6 +1256,12 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             doTest(fileName);
         }
 
+        @TestMetadata("intrinsicArrayConstructorsUseCounterLoop.kt")
+        public void testIntrinsicArrayConstructorsUseCounterLoop() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/forLoop/intrinsicArrayConstructorsUseCounterLoop.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("loopVarInterval.kt")
         public void testLoopVarInterval() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/forLoop/loopVarInterval.kt");