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From: "colanderman at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/55360] [TileGX] Passing structure by value on stack needlessly writes to and reads from memory
Date: Mon, 19 Nov 2012 18:48:00 -0000	[thread overview]
Message-ID: <bug-55360-4-oq7zLKC2JY@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-55360-4@http.gcc.gnu.org/bugzilla/>


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55360

--- Comment #2 from Chris King <colanderman at gmail dot com> 2012-11-19 18:47:39 UTC ---
Possibly, though I doubt it.  PR 28831 has more to do with eliding copies of
the struct in its entirety; the problem I'm having centers around accessing
individual elements.  If PR 28831 were the cause, I would expect both my test
cases (with and without bit-fields) to behave identically, however they do not.

It's possible that fixing PR 28831 may hide this bug in my particular use case
(by avoiding the stack allocation in the first place), but I believe the
difference in handling of normal fields vs. bit fields to be a distinct bug.


  parent reply	other threads:[~2012-11-19 18:48 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-16 20:54 [Bug rtl-optimization/55360] New: " colanderman at gmail dot com
2012-11-16 23:46 ` [Bug rtl-optimization/55360] " hjl.tools at gmail dot com
2012-11-19 18:48 ` colanderman at gmail dot com [this message]
2022-11-09 15:59 ` pinskia at gcc dot gnu.org

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