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From: Jan Hubicka <jh@suse.cz>
To: Kai Tietz <Kai.Tietz@onevision.com>
Cc: Jan Hubicka <hubicka@ucw.cz>, gcc-patches@gcc.gnu.org
Subject: Re: PING: PING: patch: ICE in legitimize_pic_address for x86_64 mingw target
Date: Wed, 01 Aug 2007 10:00:00 -0000	[thread overview]
Message-ID: <20070801100024.GG20007@kam.mff.cuni.cz> (raw)
In-Reply-To: <OF5F052C5E.76BC7621-ONC125732A.0030FCD2-C125732A.0031C395@onevision.de>

> AFAIK there are no quaranteed constant values beside the gs/fs-segment 
> area in the 64-bit ABI of MS.
> So I think the case described by you won't occure, but may I missed 
> something.
> The MS ABI defines base relocations 64-bit wide. There is no 32-bit base 
> relocation for this target. They have to be PC-relative. But this target 
> defines PC-relative relocations with 8, 32, and 64 bit width. So I don't 
> expect problems there.

There is no 64bit pc relative addressing mode on x86-64. The code in
question is matching base+offset addressing mode that is limited to
32bit signed values. Thinking about it, the generic address legitimizing
code is going to work this out, so you probably don't need to care about
it. 

The patch is OK
Honza
> AA
> Cheers,
>  i.A. Kai Tietz
> 
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      reply	other threads:[~2007-08-01 10:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-30 11:19 Kai Tietz
2007-07-31 21:44 ` Jan Hubicka
2007-08-01  9:03   ` Kai Tietz
2007-08-01 10:00     ` Jan Hubicka [this message]

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