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Re: issues trying to add ColdFire v4e FPU support to gcc-20020107
- From: Richard Henderson <rth at redhat dot com>
- To: Peter Barada <pbarada at mail dot wm dot sps dot mot dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Mon, 21 Jan 2002 10:58:14 -0800
- Subject: Re: issues trying to add ColdFire v4e FPU support to gcc-20020107
- References: <200201162108.g0GL8Jc09870@hyper.wm.sps.mot.com>
On Wed, Jan 16, 2002 at 04:08:19PM -0500, Peter Barada wrote:
> 1) How does gcc decide that (REG+REG) is valid for the movdf instuction?
GO_IF_LEGITIMATE_ADDRESS. Really. If it isn't working, you've
messed up somewhere.
> 2) Is it considered valid for the compiler to generate RTL that the
> patterns constraints reject in the rtl generation pass and hope
> that GO_IF_LEGITIMATE_ADDRESS and LEGITIMIZE_ADDRESS will fix?
No.
r~