[llvm-dev] Clang 5.0 support for armv8 64 bit with neon and auto vectorization

[Saleem Abdulrasool via llvm-dev]

On Fri, Feb 3, 2017 at 12:03 PM, Renato Golin <renato.golin at linaro.org>
wrote:

> Adding some people that know about libcxx and/or windows on arm.
>

Note that if you are trying to use Windows on ARM port, I've not tested C++
support with MS ABI, onlly the itanium ABI has been tested (there are known
limitations for the C++ MS ABI on Windows ARM).  Furthermore, we do not
currently have the ability to generate .pdata/.xdata which means that
unwinding does not work nor would exceptions (unless you use SjLj
exceptions, but that means that interop with the native libraries is not
possible).

I've not done the port for Windows ARM64 yet either (due to lack of such a
device).


> Cheers,
> Renato
>
> On 3 Feb 2017 18:15, "Haider Zeeshan (CC/ESM1) via llvm-dev" <
> llvm-dev at lists.llvm.org> wrote:
>
>> One more thing, setting up clang 5,0 on windows, I have issues compiling
>> libcxx project.
>>
>> Is it supported to be built with Visual studio or MinGW make files?
>>
>> Mit freundlichen Grüßen / Best regards
>>
>> Zeeshan Haider
>> CC/ESM1
>>
>> Tel. +49(711)811-47379
>>
>>
>>
>> -----Original Message-----
>> From: Tim Northover [mailto:t.p.northover at gmail.com]
>> Sent: Freitag, 3. Februar 2017 18:05
>> To: Haider Zeeshan (CC/ESM1) <Zeeshan.Haider at de.bosch.com>
>> Cc: llvm-dev at lists.llvm.org
>> Subject: Re: [llvm-dev] Clang 5.0 support for armv8 64 bit with neon and
>> auto vectorization
>>
>> Hi Haider,
>>
>> On 3 February 2017 at 07:13, Haider Zeeshan (CC/ESM1) <
>> Zeeshan.Haider at de.bosch.com> wrote:
>> > Being that said, can I be sure that for 64 bit arm architectures (e.g.
>> arm cortex A57) the  neon feature and auto-vectorization is supported as
>> default by clang 5.0?
>>
>> Yes, unless something has gone horribly wrong they will be. The obvious
>> quick test would be to compile something trivial like
>>
>> void foo(float *arr) {
>>   for (int i = 0; i < 128; ++i)
>>     arr[i] += 1;
>> }
>>
>> and look at the output.
>>
>> Tim.
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>


-- 
Saleem Abdulrasool
compnerd (at) compnerd (dot) org
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