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Re: What to do when constraint doesn't match

From: Jim Wilson <wilson at specifix dot com>
To: Mohamed Shafi <shafitvm at gmail dot com>
Cc: gcc at gcc dot gnu dot org
Date: Thu, 15 Mar 2007 12:25:21 -0700
Subject: Re: What to do when constraint doesn't match
References: <ba0bd44d0703142159w1785f3bawdbaf814aaa8e2c06@mail.gmail.com>

Mohamed Shafi wrote:

I have a define_expand with the pattern name mov<mode> and a
define_insn mov<mode>_store
I also have a pattern for register move from 'a' to 'b', call it
mov<mode>a2b.

You have to have a single mov<mode> pattern that accepts all valid constraint combinations. You can't use two separate patterns like this. -- Jim Wilson, GNU Tools Support, http://www.specifix.com

References:
- What to do when constraint doesn't match
  - From: Mohamed Shafi

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