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Re: PING: PING: patch: ICE in legitimize_pic_address for x86_64 mingw target
- From: Jan Hubicka <jh at suse dot cz>
- To: Kai Tietz <Kai dot Tietz at onevision dot com>
- Cc: Jan Hubicka <hubicka at ucw dot cz>, gcc-patches at gcc dot gnu dot org
- Date: Wed, 1 Aug 2007 12:00:24 +0200
- Subject: Re: PING: PING: patch: ICE in legitimize_pic_address for x86_64 mingw target
- References: <20070731213647.GA28848@atrey.karlin.mff.cuni.cz> <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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