Compiler

Consider the following:

function testFnTypedesc() {
    function () returns @a1 {desc: "In a typedesc"} string fn;
}

The above is syntactically valid. But we currently just ignore the annotations attached to the return type of a function type descriptor. i.e., it's not considered in BLangFunctionTypeNode.

We should add cmdlinetest for -XX:[+/-]UseCompressedOops. See the recent issue eclipse-openj9/openj9#13561

Similar to existing cmdlinetests that we have https://github.com/eclipse-openj9/openj9/blob/master/test/functional/cmdLineTests/xxargtest/XXArgumentTesting.xml

As per the title.
By the way, thanks for the work you're doing on jphp, and sorry for so many issues, I'm really interested in the project, and would love to use it for lotsa cool magic upcoming stuff <3

There should be the option to customize the error or warning behavior of the compiler.