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Re: Register Allocation Bug?

From: Ian Lance Taylor <iant at google dot com>
To: Kasper Bonne <kbonne at gmail dot com>
Cc: Andrew Haley <aph at redhat dot com>, gcc at gcc dot gnu dot org
Date: Wed, 25 Mar 2009 07:09:36 -0700
Subject: Re: Register Allocation Bug?
References: <df33e35e0903250432w33d101e1j46c346446d302a46@mail.gmail.com> <49CA1886.4070503@redhat.com> <df33e35e0903250648g2e4bbb39u97de91d2ef905385@mail.gmail.com>

Kasper Bonne <kbonne@gmail.com> writes:

> In my example the compiler should be able to figure out that the
> register is not available for output (because it is used as input in
> the following line), so if this behavior is not a bug, it should
> be. IMO.

This thread should really be on gcc-help@gcc.gnu.org, not
gcc@gcc.gnu.org.  Please take any followups to gcc-help.

The string in an asm statement is just that: a string.  The compiler
does not analyze or parse it in any way, other than to process %
substitutions.

Ian

References:
- Register Allocation Bug?
  - From: Kasper Bonne
- Re: Register Allocation Bug?
  - From: Andrew Haley
- Re: Register Allocation Bug?
  - From: Kasper Bonne

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