Use java.lang.Long.divideUnsigned/remainderUnsigned in Java 1.8+

#KT-24876

compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongDivide_jvm16.kt

@@ -0,0 +1,16 @@
+// JVM_TARGET: 1.6
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM_IR
+
+val ua = 1234UL
+val ub = 5678UL
+val u = ua * ub
+
+fun box(): String {
+    val div = u / ua
+    if (div != ub) throw AssertionError("$div")
+
+    return "OK"
+}
+
+// 1 INVOKESTATIC kotlin/UnsignedKt.ulongDivide

compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongDivide_jvm18.kt

@@ -0,0 +1,17 @@
+// JVM_TARGET: 1.8
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM_IR
+
+val ua = 1234UL
+val ub = 5678UL
+val u = ua * ub
+
+fun box(): String {
+    val div = u / ua
+    if (div != ub) throw AssertionError("$div")
+
+    return "OK"
+}
+
+// 0 kotlin/UnsignedKt.ulongDivide
+// 1 INVOKESTATIC java/lang/Long.divideUnsigned \(JJ\)J

compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongRemainder_jvm16.kt

@@ -0,0 +1,17 @@
+// JVM_TARGET: 1.6
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM_IR
+
+val ua = 1234UL
+val ub = 5678UL
+val uc = 3456UL
+val u = ua * ub + uc
+
+fun box(): String {
+    val rem = u % ub
+    if (rem != uc) throw AssertionError("$rem")
+
+    return "OK"
+}
+
+// 1 kotlin/UnsignedKt.ulongRemainder

compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongRemainder_jvm18.kt

@@ -0,0 +1,18 @@
+// JVM_TARGET: 1.8
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM_IR
+
+val ua = 1234UL
+val ub = 5678UL
+val uc = 3456UL
+val u = ua * ub + uc
+
+fun box(): String {
+    val rem = u % ub
+    if (rem != uc) throw AssertionError("$rem")
+
+    return "OK"
+}
+
+// 0 kotlin/UnsignedKt.ulongRemainder
+// 1 INVOKESTATIC java/lang/Long.remainderUnsigned \(JJ\)J