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Re: md description for intruction that modifies multiple operands
- From: Eric Christopher <echristo at redhat dot com>
- To: fnf at intrinsity dot com
- Cc: Richard dot Earnshaw at arm dot com, gcc at gcc dot gnu dot org
- Date: 29 May 2003 10:57:06 -0700
- Subject: Re: md description for intruction that modifies multiple operands
- Organization:
- References: <20030529175318.8C0882F2980@beeville.vert.intrinsity.com>
> when what it needed to do was to shuffle the contents of m0 through m3
> out of the first block4 into a new set of registers, or the same set
> using a temporary and some register swaps.
>
Right. This is because gcc allocates in a linear order according to
REG_ALLOC_ORDER... I don't think you can depend on it allocating
particular numbers at all. :(
-eric
--
Eric Christopher <echristo@redhat.com>