gimplify_parameters

[Richard Kenner]

    When we gimplify the type's size, via evaluating the SAVE_EXPR
    or whatever, we clobber the old contents of the TYPE_MAX_VALUE.
    I'd call that a problem, wouldn't you?

No.  The entire design of the gimplifying of types is based on this sharing.
If you only gimplify the variable parts of types once and always gimplify
inner types before the types they reference and always gimplify types
before decls of those types, all works out just fine with the sharing.
And that's exactly the order we've arranged to do things.