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Re: sh symbol_ref_flags usage

From: Richard Henderson <rth at redhat dot com>
To: Alexandre Oliva <aoliva at redhat dot com>
Cc: Richard Henderson <rth at twiddle dot net>, gcc-patches at gcc dot gnu dot org
Date: Thu, 17 Apr 2003 14:07:17 -0700
Subject: Re: sh symbol_ref_flags usage
References: <20030417102651.GA18986@twiddle.net> <or1y007t60.fsf@free.redhat.lsd.ic.unicamp.br>

On Thu, Apr 17, 2003 at 05:41:59PM -0300, Alexandre Oliva wrote:
>       emit_move_insn (reg3, gen_datalabel_ref (gen_rtx_LABEL_REF
> 					       (DImode, operands[3])));
>       emit_insn (gen_casesi_load_media (reg4, reg3, reg2, operands[3]));
> 
> It is essential that the label is referenced with DATALABEL in the
> first case, and without in the second.

This concerns a label_ref, not a symbol_ref.  Note that I've changed
nothing wrt how symbol_ref gets handled in that function:

-  XSTR (sym, 0) = concat (SH_DATALABEL_ENCODING, XSTR (sym, 0), NULL);

i.e. previously we modified the symbol_ref in place, so indeed all
references to that symbol will act the same way.

r~

References:
- sh symbol_ref_flags usage
  - From: Richard Henderson
- Re: sh symbol_ref_flags usage
  - From: Alexandre Oliva

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