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Re: ia32 inter-unit move fixes, part 1

From: Chris Lattner <clattner at apple dot com>
To: Richard Henderson <rth at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Tue, 6 Feb 2007 11:12:48 -0800
Subject: Re: ia32 inter-unit move fixes, part 1
References: <20070206183308.GA15476@redhat.com>

In this patch, I rename the existing Y constraint to Y2, so that
I can add a Yi constraint for use when inter-unit moves are
allowed.  In the balance of the patch, I adjust the md files
to match.  No uses of Yi are yet included, only renaming from
the old name.  For the insn patterns that require SSE2 in the
predicate, I rename to 'x', rather than use the conditional 'Y2',
which should be reserved for when SSE2 might not be available.

Does this break inline asm that uses the Y constraint?

-Chris

Follow-Ups:
- Re: ia32 inter-unit move fixes, part 1
  - From: Jan Hubicka

References:
- ia32 inter-unit move fixes, part 1
  - From: Richard Henderson

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