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Re: Register Allocation Question.
- From: Joern Rennecke <joernr at arc dot com>
- To: "Balaji V. Iyer" <bviyer at ncsu dot edu>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 29 Oct 2008 21:25:42 +0000
- Subject: Re: Register Allocation Question.
> Let's say I have an RTL X with destination register R1, But if I
> want to schedule this RTL to Class2. What can I do? I see that GCC
> doesn't change the register number if it already holds a hard-register.
Use constraints. They are described in md.texi.