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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67756] [6 Regression] ICE compiling Linux Kernel fs/namei.c on ARM
Date: Thu, 01 Oct 2015 18:41:00 -0000	[thread overview]
Message-ID: <bug-67756-4-CUlc8cW0Fb@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-67756-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67756

--- Comment #15 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Vladimir Makarov from comment #14)
> (In reply to Bernd Edlinger from comment #5)
> 
> > 
> > My patch from yesterday makes no difference here, but what's funny is,
> > that the set register was originally r138 but now the dump says
> > "set (reg/v:SI 1 r1 [orig:112 ...".
> 
> LRA creates a pseudo for matching reload operands and on the subsequent
> sub-pass assign a hard register to it.  When we create the pseudo it can be
> originated only from one pseudo p138 or p112 (matching pseudo operands). 
> Therefore we have such result.
> 
> It could be fixed but I don't see the efforts needed to spend on this is
> worth to fix this.  This discrepancy exists only between the insn and the
> corresponding output reload.

I agree, that was a bit surprising deja-vu when I looked closely at the dump,
but this alias should not really hurt in deed.


  parent reply	other threads:[~2015-10-01 18:41 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-29  7:16 [Bug target/67756] New: " bernd.edlinger at hotmail dot de
2015-09-29  7:19 ` [Bug target/67756] " bernd.edlinger at hotmail dot de
2015-09-29  8:31 ` [Bug target/67756] [6 Regression] " rguenth at gcc dot gnu.org
2015-09-29  9:56 ` ktkachov at gcc dot gnu.org
2015-09-29  9:57 ` ktkachov at gcc dot gnu.org
2015-10-01  7:42 ` bernd.edlinger at hotmail dot de
2015-10-01 10:22 ` bernd.edlinger at hotmail dot de
2015-10-01 10:24 ` ktkachov at gcc dot gnu.org
2015-10-01 10:29 ` bernd.edlinger at hotmail dot de
2015-10-01 10:34 ` trippels at gcc dot gnu.org
2015-10-01 10:35 ` ktkachov at gcc dot gnu.org
2015-10-01 11:25 ` ktkachov at gcc dot gnu.org
2015-10-01 12:51 ` bernd.edlinger at hotmail dot de
2015-10-01 15:27 ` vmakarov at gcc dot gnu.org
2015-10-01 15:41 ` vmakarov at gcc dot gnu.org
2015-10-01 18:41 ` bernd.edlinger at hotmail dot de [this message]
2015-10-02 10:23 ` [Bug rtl-optimization/67756] " bernd.edlinger at hotmail dot de
2015-10-02 14:40 ` vmakarov at gcc dot gnu.org
2015-10-02 15:05 ` vmakarov at gcc dot gnu.org
2015-10-02 20:27 ` bernd.edlinger at hotmail dot de
2015-10-03  6:30 ` bernd.edlinger at hotmail dot de

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