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From: Dave Korn <dave.korn.cygwin@googlemail.com>
To: daniel tian <daniel.xntian@gmail.com>
Cc: gcc@gcc.gnu.org, Ian Lance Taylor <iant@google.com>,
	  yxun lan <dennis.yxun@gmail.com>
Subject: Re: internal compiler error: in reload_combine_note_use, at  	postreload.c:1093
Date: Wed, 13 May 2009 11:58:00 -0000	[thread overview]
Message-ID: <4A0AB284.3040202@gmail.com> (raw)
In-Reply-To: <121fadb80905130255h47064421we320de6c54dabed2@mail.gmail.com>

daniel tian wrote:
> I have ported gcc4.0.2  to 32bit RISC chip. But internal compiler
> error happened: in reload_combine_note_use, at postreload.c:1093 . I
> tracked the code with insight.  error occurred in "CASE REG", when the
> register number is larger than FIRST_PSEUDO_REGISTER. Does this mean
> the reload register allocation failed?  What I know is that there is
> no pseudo register used after reload completed (Is this right?).

  Yes, this is correct.

> Can anyone give me some advice?

  It is most likely one of the expanders or other patterns in your MD file is
unconditionally calling a function such as force_reg() without checking the
reload_completed / reload_in_progress flags.  If this pattern gets invoked
post-reload, that will allocate a pseudo and then fail later.

    cheers,
      DaveK


  reply	other threads:[~2009-05-13 11:32 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-13 11:29 daniel tian
2009-05-13 11:58 ` Dave Korn [this message]
2009-05-14 11:53   ` daniel tian
2009-05-14 22:18     ` Jean Christophe Beyler

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