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Re: [PATCH] Fix PR36244, another ICE with alias recomputing after vectorization

From: "Diego Novillo" <dnovillo at google dot com>
To: "Richard Guenther" <rguenther at suse dot de>
Cc: gcc-patches at gcc dot gnu dot org
Date: Thu, 15 May 2008 08:25:25 -0400
Subject: Re: [PATCH] Fix PR36244, another ICE with alias recomputing after vectorization
References: <Pine.LNX.4.64.0805151331380.21220@zhemvz.fhfr.qr> <482C28B6.8050709@google.com> <Pine.LNX.4.64.0805151414300.21220@zhemvz.fhfr.qr>

On Thu, May 15, 2008 at 08:21, Richard Guenther <rguenther@suse.de> wrote:

> 2008-05-15  Richard Guenther  <rguenther@suse.de>
>
>        PR middle-end/36244
>        * tree-ssa-alias.c (new_type_alias): Do not set TREE_READONLY.
>        * tree-flow-inline.h (unmodifiable_var_p): Memory tags never
>        represent unmodifiable vars.
>
>        * gcc.dg/torture/pr36244.c: New testcase.

OK.

So, the only places where readonly-ness would matter is when adding
operands on VDEF operators.  The operand scanner already weeds out
read-only symbols from alias sets.

Diego.

References:
- [PATCH] Fix PR36244, another ICE with alias recomputing after vectorization
  - From: Richard Guenther
- Re: [PATCH] Fix PR36244, another ICE with alias recomputing after vectorization
  - From: Diego Novillo
- Re: [PATCH] Fix PR36244, another ICE with alias recomputing after vectorization
  - From: Richard Guenther

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