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Re: Question about the internal compiler error in verify_local_live_at_start
- From: Daniel Jacobowitz <drow at false dot org>
- To: Eric Fisher <joefoxreal at gmail dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Mon, 16 Jan 2006 12:33:25 -0500
- Subject: Re: Question about the internal compiler error in verify_local_live_at_start
- References: <d6afecde0601121834l2fe08eafw@mail.gmail.com>
On Fri, Jan 13, 2006 at 10:34:27AM +0800, Eric Fisher wrote:
> Hello,
> When I run the test suite for my port of gcc, there are some failures
> caused by the optimization flag such as -O2/-O3, and the messages are
> like,
>
> 930120-1.c: In function `f':
> 930120-1.c:138: internal compiler error: in verify_local_live_at_start, at flow.
> c:546
>
> It seems that because of the regsets doesn't match after reload. But
> can you give me any clues? I think it's hard to check the bugs.
This error usually means that something has gone wrong two or three
passes before, but not been detected until now - e.g. a needed
definition being deleted.
--
Daniel Jacobowitz
CodeSourcery