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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/113762] New: TYPE_ADDR_SPACE requirements on
 tcc_reference trees not documented/checked
Date: Mon, 05 Feb 2024 10:02:43 +0000
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X-Bugzilla-Version: 14.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113762

            Bug ID: 113762
           Summary: TYPE_ADDR_SPACE requirements on tcc_reference trees
                    not documented/checked
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---

There's not much documentation on what part of a tcc_reference chain
(handled_component_p + base) needs to reflect the TYPE_ADDR_SPACE in effect.
RTL expansion looks at the base of the chain but for example
build_fold_addr_expr_loc simply looks at the outermost object.

There's also no IL checking in place to verify consistency within such a ch=
ain.

And test coverage isn't too great for address-spaces in general.=