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Re: [patch] genrecog.c: Simplify comparisons against small constants in insn-recog.c.

From: Dale Johannesen <dalej at apple dot com>
To: Richard Henderson <rth at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org, Dale Johannesen <dalej at apple dot com>, Kazu Hirata <kazu at cs dot umass dot edu>, Roger Sayle <roger at eyesopen dot com>
Date: Fri, 30 Jan 2004 14:53:15 -0800
Subject: Re: [patch] genrecog.c: Simplify comparisons against small constants in insn-recog.c.
References: <20040130011912.GA11790@redhat.com> <Pine.LNX.4.44.0401300611150.32111-100000@www.eyesopen.com> <20040130224424.GC17578@redhat.com>

On Jan 30, 2004, at 2:44 PM, Richard Henderson wrote:

It would also be nice if we could somehow mark the const_int_rtx array
as const or unchanging once initialized?

I can't think of any way.

No. People ask us for this all the time, and there's no way to do it. It used to work to declare it non-const in the file where it's initialized, and const everywhere else (including the header file), but that was always nonstandard and stopped working around gcc 3.0. A missing feature in the languages.

References:
- Re: [patch] genrecog.c: Simplify comparisons against small constants in insn-recog.c.
  - From: Richard Henderson
- Re: [patch] genrecog.c: Simplify comparisons against small constantsin insn-recog.c.
  - From: Roger Sayle
- Re: [patch] genrecog.c: Simplify comparisons against small constants in insn-recog.c.
  - From: Richard Henderson

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