Avoid primitive boxing for 'boxed == primitive' if possible

This makes sense for non-floating-point primitive type
(boolean, char, byte, short, int, long):
floating-point types use specialized versions of 'areEqual'.

compiler/tests/org/jetbrains/kotlin/codegen/BytecodeTextTestGenerated.java

@@ -294,6 +294,12 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
         doTest(fileName);
     }
 
+    @TestMetadata("noBoxingForBoxedEqPrimitive.kt")
+    public void testNoBoxingForBoxedEqPrimitive() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/noBoxingForBoxedEqPrimitive.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("noFlagAnnotations.kt")
     public void testNoFlagAnnotations() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/noFlagAnnotations.kt");