[llvm-dev] Not to consolidate two structs with the same data types (but different names) in configure/make tool chain

[Craig Topper via llvm-dev]

LTO has to merge the modules from different translation units. Those
modules very likely have duplicate types in them so LTO merges them to
avoid wasting memory on duplicates.

~Craig


On Wed, Feb 6, 2019 at 6:55 PM Peng Yu via llvm-dev <llvm-dev at lists.llvm.org>
wrote:

> > https://llvm.org/docs/LangRef.html#structure-types
>
> I don't follow the above link. Could you help explain what it means?
>
> > Fundamentally, llvm is not designed to preserve details about front end
> language features.
>
> If directly compile .c to .ll can preserve the original struct
> information even they are essentially the same, why flto can not? It
> seems to me that there must be a way to preserve such info if flto is
> used.
>
> --
> Regards,
> Peng
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