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Re: conditional LABEL_EXPR

From: Ian Lance Taylor <iant at google dot com>
To: Philip Herron <redbrain at gcc dot gnu dot org>
Cc: GCC <gcc-help at gcc dot gnu dot org>
Date: Tue, 9 Oct 2012 07:01:12 -0700
Subject: Re: conditional LABEL_EXPR
References: <CAEvRbepCgMu_z5PU4VgbykvfzxUQ5-=W4OyUt-yxHmznaCaB0A@mail.gmail.com>

On Tue, Oct 9, 2012 at 4:47 AM, Philip Herron <redbrain@gcc.gnu.org> wrote:
>
>   tree label_decl = create_artificial_label (UNKNOWN_LOCATION);

>
> I can't see a good example on how to make an if statement hard to dig
> through front-end specifics. I wonder does this mean for every
> LABEL_EXPR it was DECL_CONTEXT(label) = current_fndecl?

When you call create_artificial_label, it will set DECL_CONTEXT of the
new label to point to current_function_decl.  So the simplest way to
get the right thing is to ensure that current_function_decl is correct
whenever you call create_artificial_label.

Ian

Follow-Ups:
- Re: conditional LABEL_EXPR
  - From: Philip Herron

References:
- conditional LABEL_EXPR
  - From: Philip Herron

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