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Re: [PATCH] Fix PR optimization/10876

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: Richard Henderson <rth at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Fri, 23 May 2003 23:46:32 +0200
Subject: Re: [PATCH] Fix PR optimization/10876
References: <200305201952.05594.ebotcazou@libertysurf.fr> <20030523194400.GE2824@redhat.com>

> > Now, on Sparc, the addsi3 expander may emit a MINUS under certain
> > circumstances, which confuses calculate_giv_inc().
>
> This is incorrect.  We should *never* generate
>
> 	(minus (reg) (const_int))

Does the "never" pertain to:
(1) the whole compiler,
(2) the SPARC port,
(3) the addsi3 pattern in general,
(4) the addsi3 pattern of the SPARC port,
(5) increment insns associated to an induction variable ?

-- 
Eric Botcazou

References:
- [PATCH] Fix PR optimization/10876
  - From: Eric Botcazou
- Re: [PATCH] Fix PR optimization/10876
  - From: Richard Henderson

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