Question on tree-ssa-loop-im.c:for_each_index

[Zdenek Dvorak]

Hello,

>     > Depends what the type is.  If it's an array type, then there's no
>     > simple equivalent expression.
> 
>     using CONSTRUCTOR node?
> 
> What I mean by "simple" is something that's easy to derive.  Suppose I have
> a record with numerous fields of various sizes and I unchecked convert a
> constant to it.  Yes, I could write code to convert that into a CONSTRUCTOR
> by figuring out what value should be assigned to each field, but that's a
> pretty large block of code for a pretty marginal case.

however, avoiding possibly a large amount of bugs in code that does not
expect this corner case.  I would certainly consider it much cleaner
solution than adding hacks to for_each_index and possibly other places
that do not expect something as weird.

That being said, I think your patch is safe and will not break any of
the uses of for_each_index.

Zdenek