[Bug tree-optimization/66768] __seg_fs and __seg_gs: issue when adding address space support

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66768

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |amker.cheng at gmail dot com,
                   |                            |rguenth at gcc dot gnu.org
          Component|c                           |tree-optimization

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can very well imagine that IVOPTs fails to preserve address-spaces here. 
Eventually it is also RTL expansion that in the end makes the issue surface.

Not sure which existing targest with address-space support would share enough
properties with the proposed patch to expose the same issue.