Migrate deprecations in core, compiler, idea, tests

Replacing deprecated Char.toInt() with Char.code and
Number.toChar() with Number.toInt().toChar(), where Number is not Int.

KT-23451

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

@@ -82,8 +82,8 @@ internal class CharProgressionType(symbols: Symbols<CommonBackendContext>) :
     ProgressionType(
         elementClass = symbols.char.owner,
         stepClass = symbols.int.owner,
-        minValueAsLong = Char.MIN_VALUE.toLong(),
-        maxValueAsLong = Char.MAX_VALUE.toLong(),
+        minValueAsLong = Char.MIN_VALUE.code.toLong(),
+        maxValueAsLong = Char.MAX_VALUE.code.toLong(),
         // Uses `getProgressionLastElement(Int, Int, Int): Int`
         getProgressionLastElementFunction = symbols.getProgressionLastElementByReturnType[symbols.int]
     ) {

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

@@ -76,7 +76,7 @@ internal val IrExpression.canHaveSideEffects: Boolean
 private fun Any?.toLong(): Long? =
     when (this) {
         is Number -> toLong()
-        is Char -> toLong()
+        is Char -> code.toLong()
         else -> null
     }
 

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/ConstLowering.kt

@@ -60,7 +60,7 @@ class ConstTransformer(private val context: JsIrBackendContext) : IrElementTrans
             }
             return when {
                 expression.kind is IrConstKind.Char ->
-                    lowerConst(charClassSymbol, IrConstImpl.Companion::int, IrConstKind.Char.valueOf(expression).toInt())
+                    lowerConst(charClassSymbol, IrConstImpl.Companion::int, IrConstKind.Char.valueOf(expression).code)
 
                 expression.kind is IrConstKind.Long ->
                     createLong(IrConstKind.Long.valueOf(expression))

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt

@@ -736,7 +736,7 @@ class ExpressionCodegen(
     private fun isDefaultValueForType(type: Type, value: Any?): Boolean =
         when (type) {
             Type.BOOLEAN_TYPE -> value is Boolean && !value
-            Type.CHAR_TYPE -> value is Char && value.toInt() == 0
+            Type.CHAR_TYPE -> value is Char && value.code == 0
             Type.BYTE_TYPE, Type.SHORT_TYPE, Type.INT_TYPE, Type.LONG_TYPE -> value is Number && value.toLong() == 0L
             // Must use `equals` for these two to differentiate between +0.0 and -0.0:
             Type.FLOAT_TYPE -> value is Number && value.toFloat().equals(0.0f)
@@ -836,7 +836,7 @@ class ExpressionCodegen(
                 mv.nop()
                 return BooleanConstant(this, value)
             }
-            is Char -> mv.iconst(value.toInt())
+            is Char -> mv.iconst(value.code)
             is Long -> mv.lconst(value)
             is Float -> mv.fconst(value)
             is Double -> mv.dconst(value)

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/BodyGenerator.kt

@@ -53,7 +53,7 @@ class BodyGenerator(val context: WasmFunctionCodegenContext) : IrElementVisitorV
             is IrConstKind.Short -> body.buildConstI32(kind.valueOf(expression).toInt())
             is IrConstKind.Int -> body.buildConstI32(kind.valueOf(expression))
             is IrConstKind.Long -> body.buildConstI64(kind.valueOf(expression))
-            is IrConstKind.Char -> body.buildConstI32(kind.valueOf(expression).toInt())
+            is IrConstKind.Char -> body.buildConstI32(kind.valueOf(expression).code)
             is IrConstKind.Float -> body.buildConstF32(kind.valueOf(expression))
             is IrConstKind.Double -> body.buildConstF64(kind.valueOf(expression))
             is IrConstKind.String -> {

compiler/ir/ir.interpreter/src/org/jetbrains/kotlin/ir/interpreter/builtins/IrBuiltInsMapGenerated.kt

@@ -21,7 +21,7 @@ import org.jetbrains.kotlin.ir.interpreter.state.*
 
 /** This file is generated by org.jetbrains.kotlin.backend.common.interpreter.builtins.GenerateBuiltInsMap.generateMap(). DO NOT MODIFY MANUALLY */
 
-@Suppress("DEPRECATION_ERROR")
+@Suppress("DEPRECATION", "DEPRECATION_ERROR")
 val unaryFunctions = mapOf<CompileTimeFunction, Function1<Any?, Any?>>(
     unaryOperation<Boolean>("hashCode", "Boolean") { a -> a.hashCode() },
     unaryOperation<Boolean>("not", "Boolean") { a -> a.not() },

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFileSerializer.kt

@@ -580,7 +580,7 @@ open class IrFileSerializer(
             IrConstKind.Null -> proto.`null` = true
             IrConstKind.Boolean -> proto.boolean = value.value as Boolean
             IrConstKind.Byte -> proto.byte = (value.value as Byte).toInt()
-            IrConstKind.Char -> proto.char = (value.value as Char).toInt()
+            IrConstKind.Char -> proto.char = (value.value as Char).code
             IrConstKind.Short -> proto.short = (value.value as Short).toInt()
             IrConstKind.Int -> proto.int = value.value as Int
             IrConstKind.Long -> proto.long = value.value as Long