About LTO merging symbol tables

[Diego Novillo]

On Thu, Sep 16, 2010 at 18:06, Hongtao <yu171@purdue.edu> wrote:
>  Hi All,
>
> Does the lto module merge all the global symbol tables maintained by
> each function together? I mean, for example, if in two function bodies
> there are two global variable (suppose its name is aaa) references . Are
> the VAR_DECL nodes of variable aaa in the two function bodies is the
> same node?

If they can be merged under the One Definition Rule, then yes.
Otherwise, an error is emitted.  It uses the same rules used by the
linker.


Diego.