Generate compareTo() properly

Take into account:
1) resolved call to compareTo (instead of always calling Comparable's method)
2) types of both caller and callee, when primitive, to avoid wrong casting
(instead of always using caller's type)

 #KT-3078 Fixed

compiler/testData/codegen/operatorConventions/compareTo/comparable.kt

@@ -0,0 +1,16 @@
+trait A : Comparable<A>
+
+class B(val x: Int) : A {
+    override fun compareTo(other: A) = x.compareTo((other as B).x)
+}
+
+fun checkLess(x: A, y: A) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(B(0), B(1))

compiler/testData/codegen/operatorConventions/compareTo/doubleInt.kt

@@ -0,0 +1,10 @@
+fun checkLess(x: Double, y: Int) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(0.5, 1)

compiler/testData/codegen/operatorConventions/compareTo/doubleLong.kt

@@ -0,0 +1,10 @@
+fun checkLess(x: Double, y: Long) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(0.5, 1.toLong())

compiler/testData/codegen/operatorConventions/compareTo/extensionArray.kt

@@ -0,0 +1,16 @@
+fun checkLess(x: Array<Int>, y: Array<Int>) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun Array<Int>.compareTo(other: Array<Int>) = size - other.size
+
+fun box(): String {
+    val a = Array<Int>(0, {0})
+    val b = Array<Int>(1, {0})
+    return checkLess(a, b)
+}

compiler/testData/codegen/operatorConventions/compareTo/extensionObject.kt

@@ -0,0 +1,14 @@
+class A(val x: Int)
+
+fun A.compareTo(other: A) = x.compareTo(other.x)
+
+fun checkLess(x: A, y: A) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(A(0), A(1))

compiler/testData/codegen/operatorConventions/compareTo/intDouble.kt

@@ -0,0 +1,10 @@
+fun checkLess(x: Int, y: Double) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(0, 0.5)

compiler/testData/codegen/operatorConventions/compareTo/intLong.kt

@@ -0,0 +1,10 @@
+fun checkLess(x: Int, y: Long) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(0, 123456789123.toLong())

compiler/testData/codegen/operatorConventions/compareTo/longDouble.kt

@@ -0,0 +1,10 @@
+fun checkLess(x: Long, y: Double) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(0.toLong(), 0.5)

compiler/testData/codegen/operatorConventions/compareTo/longInt.kt

@@ -0,0 +1,10 @@
+fun checkLess(x: Long, y: Int) = when {
+    x >= y    -> "Fail $x >= $y"
+    !(x < y)  -> "Fail !($x < $y)"
+    !(x <= y) -> "Fail !($x <= $y)"
+    x > y     -> "Fail $x > $y"
+    x.compareTo(y) >= 0 -> "Fail $x.compareTo($y) >= 0"
+    else -> "OK"
+}
+
+fun box() = checkLess(-123456789123.toLong(), 0)

compiler/testData/codegen/regressions/kt3078.kt

@@ -0,0 +1,7 @@
+fun box(): String {
+    if (1 >= 1.9) return "Fail #1"
+    if (1.compareTo(1.1) >= 0) return "Fail #2"
+    if (1.9 <= 1) return "Fail #3"
+    if (1.1.compareTo(1) <= 0) return "Fail #4"
+    return "OK"
+}