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Date: Thu, 07 Jul 2011 16:19:00 -0000
From: Paolo Bonzini <bonzini@gnu.org>
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To: Kai Tietz <ktietz70@googlemail.com>
CC: GCC Patches <gcc-patches@gcc.gnu.org>,  Richard Guenther <richard.guenther@gmail.com>
Subject: Re: [patch tree-optimization]: [3 of 3]: Boolify compares & more
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On 07/07/2011 06:07 PM, Kai Tietz wrote:
> +  /* We redo folding here one time for allowing to inspect more
> +     complex reductions.  */
> +  substitute_and_fold (op_with_constant_singleton_value_range,
> +		       vrp_fold_stmt, false);
> +  /* We need to mark this second pass to avoid re-entering of same
> +     edges for switch statments.  */
> +  in_second_pass = true;
>     substitute_and_fold (op_with_constant_singleton_value_range,
>   		       vrp_fold_stmt, false);
> +  in_second_pass = false;

This needs a much better explanation.

Paolo