Chars are not promoted to Int on comparisons

compiler/testData/codegen/box/binaryOp/kt11163_properIeee754comparisons.kt

@@ -0,0 +1,13 @@
+// !LANGUAGE: +ProperIeee754Comparisons
+operator fun Int.compareTo(c: Char) = 0
+
+fun foo(x: Int, y: Char): String {
+    if (x < y) {
+        throw Error()
+    }
+    return "${y}K"
+}
+
+fun box(): String {
+    return foo(42, 'O')
+}

compiler/testData/codegen/box/binaryOp/kt23030_properIeee754comparisons.kt

@@ -0,0 +1,15 @@
+// !LANGUAGE: +ProperIeee754Comparisons
+class C {
+    operator fun Int.compareTo(c: Char) = 0
+
+    fun foo(x: Int, y: Char): String {
+        if (x < y) {
+            throw Error()
+        }
+        return "${y}K"
+    }
+}
+
+fun box(): String {
+    return C().foo(42, 'O')
+}