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Re: [ARM] Fix CLZ_DEFINED_VALUE_AT_ZERO for vector modes
- From: "Yangfei (Felix)" <felix dot yang at huawei dot com>
- To: "ramrad01 at arm dot com" <ramrad01 at arm dot com>, Michael Collison <michael dot collison at linaro dot org>
- Cc: Tejas Belagod <tejas dot belagod at arm dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 12 Nov 2014 03:50:25 +0000
- Subject: Re: [ARM] Fix CLZ_DEFINED_VALUE_AT_ZERO for vector modes
- Authentication-results: sourceware.org; auth=none
- References: <543633BD dot 9030004 at linaro dot org> <54363F8A dot 8020501 at arm dot com> <54482653 dot 5060805 at linaro dot org> <CAJA7tRa-9qCBW-b1ZvDPQR2VtXask12Bp7-XrSQ8EToTUVO9Ew at mail dot gmail dot com>
> On Wed, Oct 22, 2014 at 10:49 PM, Michael Collison <michael.collison@linaro.org>
> wrote:
> >
> > Patch that removes extraneous comment attached.
> >
> > The CLZ_DEFINED_VALUE_AT_ZERO macro is hard coded to return 32. For
> > the vector intrinsic vclz this is incorrect and should return the
> > value
>
> vclz_{s,u}8 ...
>
> > eight. The CTZ_DEFINED_VALUE_AT_ZERO has the same issue.
>
> The patch is ok . Sorry about the delay in reviewing this.
>
> Ramana
>
Hello,
Can anybody backport this patch for the 4.8/4.9 branch? They have the same issue too. Thanks.