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* [Bug other/19815] Documentation change - GCC Internals MODES_TIEABLE_P
[not found] <bug-19815-4@http.gcc.gnu.org/bugzilla/>
@ 2012-01-11 12:47 ` rguenth at gcc dot gnu.org
0 siblings, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-01-11 12:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19815
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2012-01-11
Ever Confirmed|0 |1
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-11 12:46:52 UTC ---
Is this still an issue?
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug other/19815] Documentation change - GCC Internals MODES_TIEABLE_P
[not found] <bug-19815-7648@http.gcc.gnu.org/bugzilla/>
@ 2009-08-19 11:57 ` abnikant dot singh at atmel dot com
0 siblings, 0 replies; 3+ messages in thread
From: abnikant dot singh at atmel dot com @ 2009-08-19 11:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from abnikant dot singh at atmel dot com 2009-08-19 11:57 -------
"If HARD_REGNO_MODE_OK (r, mode1) and HARD_REGNO_MODE_OK (r, mode2) are always
the same for any r, then MODES_TIEABLE_P (mode1, mode2) should be nonzero. If
they differ for any r, you should define this macro to return zero unless some
other mechanism ensures the accessibility of the value in a narrower mode."
In case of avr:
if (mode1 != mode2) then HARD_REGNO_MODE_OK (r, mode1) != HARD_REGNO_MODE_OK
(r, mode2) and hence MODES_TIEABLE_P (mode1, mode2) should be 0. [ But this is
true only if we do not have other mechanism to access the value in narrower
mode ]
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19815
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug other/19815] Documentation change - GCC Internals MODES_TIEABLE_P
2005-02-08 15:03 [Bug other/19815] New: " andrewhutchinson at cox dot net
@ 2005-02-10 21:48 ` ericw at evcohs dot com
0 siblings, 0 replies; 3+ messages in thread
From: ericw at evcohs dot com @ 2005-02-10 21:48 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |ericw at evcohs dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19815
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2012-01-11 12:47 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-19815-4@http.gcc.gnu.org/bugzilla/>
2012-01-11 12:47 ` [Bug other/19815] Documentation change - GCC Internals MODES_TIEABLE_P rguenth at gcc dot gnu.org
[not found] <bug-19815-7648@http.gcc.gnu.org/bugzilla/>
2009-08-19 11:57 ` abnikant dot singh at atmel dot com
2005-02-08 15:03 [Bug other/19815] New: " andrewhutchinson at cox dot net
2005-02-10 21:48 ` [Bug other/19815] " ericw at evcohs dot com
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