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Re: [google] Backport r171347 from trunk to google/gcc-4_6 (issue5396043)
- From: Richard Earnshaw <rearnsha at arm dot com>
- To: Doug Kwan <dougkwan at google dot com>
- Cc: "reply at codereview dot appspotmail dot com" <reply at codereview dot appspotmail dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 16 Nov 2011 16:41:42 +0000
- Subject: Re: [google] Backport r171347 from trunk to google/gcc-4_6 (issue5396043)
- References: <20111116085109.E1D5E20CE9@atree.mtv.corp.google.com>
On 16/11/11 08:51, Doug Kwan wrote:
> This patch backports the upstream fix in r171347 for a problem caused by
> change in volatile bitfield access. This is tested by building the
> x86 toolchain with tests and checking that volatile bitfield access worked
> on ARM. This is a backport for 4.6 only.
>
> 2011-11-16 Doug Kwan <dougkwan@google.com>
>
> Backport r171347 from trunk.
>
> 2011-03-23 Julian Brown <julian@codesourcery.com>
>
> * expr.c (expand_expr_real_1): Only use BLKmode for volatile
> accesses which are not naturally aligned.
>
So Joey Ye posted the following patch, which I think is needed to fix a
regression that that patch introduces.
http://gcc.gnu.org/ml/gcc-patches/2011-11/msg01390.html
However, it's not been reviewed yet :-(
R.