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Re: How to deal with unrecognizable RTL code
- From: Dave Korn <dave dot korn dot cygwin at googlemail dot com>
- To: "daniel.tian" <daniel dot tian at mavrixtech dot com dot cn>
- Cc: 'Paolo Bonzini' <bonzini at gnu dot org>, gcc at gcc dot gnu dot org, 'Peng Zheng' <peng dot zheng at mavrixtech dot com>
- Date: Wed, 24 Jun 2009 10:48:03 +0100
- Subject: Re: How to deal with unrecognizable RTL code
- References: <20090624085400.DBE5250C9E1A@mail.mavrixtech.com.cn>
daniel.tian wrote:
>>> 2) what pass is producing those subregs?
> This is really puzzled me. I just wrote the PROMOTE_MODE like MIPS.
> Any advice?
Turn on the RTL dump files and see where the subregs first appear? My guess
would be reload, but let's find out.
cheers,
DaveK