JVM IR: Avoid boxing in generic floating point equality (KT-48635)

compiler/testData/codegen/box/dataClasses/equalityChecksPrimitiveUnboxed.kt

@@ -0,0 +1,42 @@
+// The purpose of this test is to ensure that we don't generate any primitive boxing in the implementation
+// of a data class. See KT-48635.
+
+data class VBoolean(val value: Boolean)
+
+data class VByte(val value: Byte)
+
+data class VChar(val value: Char)
+
+data class VShort(val value: Short)
+
+data class VInt(val value: Int)
+
+data class VLong(val value: Long)
+
+data class VFloat(val value: Float)
+
+data class VDouble(val value: Double)
+
+fun box(): String {
+    if (VBoolean(true) == VBoolean(false)) return "Fail 0"
+    if (VByte(0) == VByte(1)) return "Fail 1"
+    if (VChar('a') == VChar('b')) return "Fail 2"
+    if (VShort(0) == VShort(1)) return "Fail 3"
+    if (VInt(0) == VInt(1)) return "Fail 4"
+    if (VLong(0L) == VLong(1L)) return "Fail 5"
+    if (VFloat(0f) == VFloat(1f)) return "Fail 6"
+    if (VDouble(0.0) == VDouble(1.0)) return "Fail 7"
+    return "OK"
+}
+
+// CHECK_BYTECODE_TEXT
+// 0 java/lang/Boolean.valueOf
+// 0 java/lang/Byte.valueOf
+// 0 java/lang/Character.valueOf
+// 0 java/lang/Short.valueOf
+// 0 java/lang/Integer.valueOf
+// 0 java/lang/Long.valueOf
+// 0 java/lang/Float.valueOf
+// 0 java/lang/Double.valueOf
+// 1 java/lang/Float.compare
+// 1 java/lang/Double.compare