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From: "jakub at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/42782] [4.5 Regression] VTA missed location: parameter via stack
Date: Mon, 18 Jan 2010 10:58:00 -0000	[thread overview]
Message-ID: <20100118105750.21758.qmail@sourceware.org> (raw)
In-Reply-To: <bug-42782-12292@http.gcc.gnu.org/bugzilla/>



------- Comment #3 from jakub at gcc dot gnu dot org  2010-01-18 10:57 -------
The problem is that dataflow_set_preserve_mem_locs and/or
dataflow_set_remove_mem_locs removes all MEMs (with the exception of those
referring to decl with 0 MEM_OFFSET in the first function) upon encountering a
CALL.  For parameters (ARG_POINTER_REGNUM based, or even
HARD_FRAME_POINTER_REGNUM based ones I believe) we don't need to remove them,
as long as the decl isn't addressable and thus the call shouldn't have modified
them.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42782


  parent reply	other threads:[~2010-01-18 10:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-17 21:33 [Bug debug/42782] New: " jan dot kratochvil at redhat dot com
2010-01-17 23:23 ` [Bug debug/42782] " jan dot kratochvil at redhat dot com
2010-01-18 10:14 ` [Bug debug/42782] [4.5 Regression] " jakub at gcc dot gnu dot org
2010-01-18 10:58 ` jakub at gcc dot gnu dot org [this message]
2010-01-19  8:44 ` aoliva at gcc dot gnu dot org
2010-01-20 22:57 ` jakub at gcc dot gnu dot org
2010-01-22 17:03 ` jakub at gcc dot gnu dot org

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