public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c/105713] New: [gimplefe] need a way to specify TREE_ADDRESSABLE
@ 2022-05-24 8:08 rguenth at gcc dot gnu.org
2022-05-24 8:08 ` [Bug c/105713] " rguenth at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-24 8:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105713
Bug ID: 105713
Summary: [gimplefe] need a way to specify TREE_ADDRESSABLE
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
For PR105711 a RTL expansion GIMPLE testcase would have been nice:
typedef char v2qi __attribute__((vector_size(2)));
void __GIMPLE (ssa,startwith("optimized"))
foo (__complex__ char c)
{
__BB(2):
__MEM <v2qi, 8> (&c) = _Literal (v2qi) { _Literal (char) 0, _Literal (char) 0
};
return;
}
but here 'c' ends up TREE_ADDRESSABLE while with the original setup it is not.
That's because the C FE parsing marks 'c' addressable when parsing &c. The
GIMPLE FE should fix this up on the optimistic side somehow and allow
specifying TREE_ADDRESSABLE at the declaration.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/105713] [gimplefe] need a way to specify TREE_ADDRESSABLE
2022-05-24 8:08 [Bug c/105713] New: [gimplefe] need a way to specify TREE_ADDRESSABLE rguenth at gcc dot gnu.org
@ 2022-05-24 8:08 ` rguenth at gcc dot gnu.org
2023-05-17 23:23 ` pinskia at gcc dot gnu.org
2023-05-18 5:59 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-05-24 8:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105713
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Blocks| |101057
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101057
[Bug 101057] [gimplefe] GIMPLE frontend issues
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/105713] [gimplefe] need a way to specify TREE_ADDRESSABLE
2022-05-24 8:08 [Bug c/105713] New: [gimplefe] need a way to specify TREE_ADDRESSABLE rguenth at gcc dot gnu.org
2022-05-24 8:08 ` [Bug c/105713] " rguenth at gcc dot gnu.org
@ 2023-05-17 23:23 ` pinskia at gcc dot gnu.org
2023-05-18 5:59 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-05-17 23:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105713
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2023-05-17
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/105713] [gimplefe] need a way to specify TREE_ADDRESSABLE
2022-05-24 8:08 [Bug c/105713] New: [gimplefe] need a way to specify TREE_ADDRESSABLE rguenth at gcc dot gnu.org
2022-05-24 8:08 ` [Bug c/105713] " rguenth at gcc dot gnu.org
2023-05-17 23:23 ` pinskia at gcc dot gnu.org
@ 2023-05-18 5:59 ` rguenth at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-05-18 5:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105713
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Similarly DECL_NOT_GIMPLE_REG_P. "easiest" to do with attributes on the
declaration I guess. GIMPLE FE specific attributes should be not recognized
without -fgimple and should be prefixed g_addressable, g_not_gimple_reg_p?
Optimistic clearing is going to be difficult, we'd need to have a lot of
attributes that way. There's a narrow subset of cases we "ignore"
& for addressability and __MEM parsing is separate so eventually we
can introduce a flag into the C frontend to not set TREE_ADDRESSABLE when
in some "context".
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-05-18 5:59 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-24 8:08 [Bug c/105713] New: [gimplefe] need a way to specify TREE_ADDRESSABLE rguenth at gcc dot gnu.org
2022-05-24 8:08 ` [Bug c/105713] " rguenth at gcc dot gnu.org
2023-05-17 23:23 ` pinskia at gcc dot gnu.org
2023-05-18 5:59 ` rguenth at gcc dot gnu.org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).