Add ABI tests for classes extending Number and CharSequence

compiler/testData/codegen/bytecodeListing/specialBridges/charSequence.kt

@@ -0,0 +1,9 @@
+abstract class AbstractCharSequence : CharSequence
+
+class MyCharSequence : CharSequence {
+    override val length: Int get() = 0
+
+    override fun get(index: Int): Char = throw Exception()
+
+    override fun subSequence(startIndex: Int, endIndex: Int): CharSequence = this
+}

compiler/testData/codegen/bytecodeListing/specialBridges/charSequence.txt

@@ -0,0 +1,20 @@
+@kotlin.Metadata
+public abstract class AbstractCharSequence {
+    // source: 'charSequence.kt'
+    public method <init>(): void
+    public bridge final method charAt(p0: int): char
+    public abstract method get(p0: int): char
+    public abstract method getLength(): int
+    public bridge final method length(): int
+}
+
+@kotlin.Metadata
+public final class MyCharSequence {
+    // source: 'charSequence.kt'
+    public method <init>(): void
+    public bridge final method charAt(p0: int): char
+    public method get(p0: int): char
+    public method getLength(): int
+    public bridge final method length(): int
+    public @org.jetbrains.annotations.NotNull method subSequence(p0: int, p1: int): java.lang.CharSequence
+}

compiler/testData/codegen/bytecodeListing/specialBridges/number.kt

@@ -0,0 +1,14 @@
+// IGNORE_BACKEND: JVM_IR
+// ^ see KT-42578
+
+abstract class AbstractNumber : Number()
+
+class MyNumber : Number() {
+    override fun toByte(): Byte = 0
+    override fun toChar(): Char = 0.toChar()
+    override fun toDouble(): Double = 0.0
+    override fun toFloat(): Float = 0.0f
+    override fun toInt(): Int = 0
+    override fun toLong(): Long = 0
+    override fun toShort(): Short = 0
+}

compiler/testData/codegen/bytecodeListing/specialBridges/number.txt

@@ -0,0 +1,30 @@
+@kotlin.Metadata
+public abstract class AbstractNumber {
+    // source: 'number.kt'
+    public method <init>(): void
+    public bridge final method byteValue(): byte
+    public bridge final method doubleValue(): double
+    public bridge final method floatValue(): float
+    public bridge final method intValue(): int
+    public bridge final method longValue(): long
+    public bridge final method shortValue(): short
+}
+
+@kotlin.Metadata
+public final class MyNumber {
+    // source: 'number.kt'
+    public method <init>(): void
+    public bridge final method byteValue(): byte
+    public bridge final method doubleValue(): double
+    public bridge final method floatValue(): float
+    public bridge final method intValue(): int
+    public bridge final method longValue(): long
+    public bridge final method shortValue(): short
+    public method toByte(): byte
+    public method toChar(): char
+    public method toDouble(): double
+    public method toFloat(): float
+    public method toInt(): int
+    public method toLong(): long
+    public method toShort(): short
+}