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zero vector usagee (Was: Re: RFA: gcc.dg/simd-1.c fix for x86)
- From: Joern Rennecke <joern dot rennecke at superh dot com>
- To: Daniel Egger <degger at fhm dot edu>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, gcc at gcc dot gnu dot org
- Date: Mon, 08 Jul 2002 11:41:03 +0100
- Subject: zero vector usagee (Was: Re: RFA: gcc.dg/simd-1.c fix for x86)
- Organization: SuperH UK Ltd.
- References: <3D287F6F.E25C9323@superh.com> <firstname.lastname@example.org>
Daniel Egger wrote:
> Might this be the cause of the problem I'm seeing? If so I'd be grateful
> to know so I can bootstrap gcc again and test with your patch whether it
> solves the issues.
I've used gen_rtx_CONST_VECTOR in some cases where it might generate a
zero. We need to decide if using the zero vector is just optional,
if it's the responsibly of gen_rtx_CONST_VECTOR to use it - in which case
it has to be made a proper function - or if it's the responsibility of
the caller to use it - in which case we need a wrapper function to make
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