On 27 September 2018 at 17:59, Richard Henderson wrote:
> On 9/27/18 5:53 AM, Peter Maydell wrote:
>> Maybe I can do something to persuade the compiler that the
>> pointer really is 4 aligned...
>
> Hopefully __builtin_assume_aligned(ptr, 4) is supported by that version of
> clang?
Yes; I sent
On 9/27/18 5:53 AM, Peter Maydell wrote:
> Maybe I can do something to persuade the compiler that the
> pointer really is 4 aligned...
Hopefully __builtin_assume_aligned(ptr, 4) is supported by that version of
clang?
r~
On 27 September 2018 at 13:22, Peter Maydell wrote:
> On 18 July 2018 at 16:12, Paolo Bonzini wrote:
>> On 18/07/2018 16:56, Philippe Mathieu-Daudé wrote:
>>> Using clang-7 (Debian) on x86_64 to build v3.0.0-rc1.
>>>
>>> Not a regression, it was probably always there:
>>>
>>> $ ./configure
On 18 July 2018 at 16:12, Paolo Bonzini wrote:
> On 18/07/2018 16:56, Philippe Mathieu-Daudé wrote:
>> Using clang-7 (Debian) on x86_64 to build v3.0.0-rc1.
>>
>> Not a regression, it was probably always there:
>>
>> $ ./configure --cc=clang-7 && make hw/display/qxl.o
>> hw/display/qxl.c:1884:19:
On 07/18/2018 12:12 PM, Paolo Bonzini wrote:
> On 18/07/2018 16:56, Philippe Mathieu-Daudé wrote:
>> Using clang-7 (Debian) on x86_64 to build v3.0.0-rc1.
>>
>> Not a regression, it was probably always there:
>>
>> $ ./configure --cc=clang-7 && make hw/display/qxl.o
>> hw/display/qxl.c:1884:19:
On 18/07/2018 16:56, Philippe Mathieu-Daudé wrote:
> Using clang-7 (Debian) on x86_64 to build v3.0.0-rc1.
>
> Not a regression, it was probably always there:
>
> $ ./configure --cc=clang-7 && make hw/display/qxl.o
> hw/display/qxl.c:1884:19: error: misaligned or large atomic operation
> may
Using clang-7 (Debian) on x86_64 to build v3.0.0-rc1.
Not a regression, it was probably always there:
$ ./configure --cc=clang-7 && make hw/display/qxl.o
hw/display/qxl.c:1884:19: error: misaligned or large atomic operation
may incur significant performance penalty [-Werror,-Watomic-alignment]
