gt;> lopeziba...@gmail.com; Jan Hubicka ; Jakub Jelinek
>> ; gcc@gcc.gnu.org
>> Subject: Re: option -mprfchw on 2 different Opteron cpus
>>
>> On Mon, May 2, 2016 at 5:55 AM, Kumar, Venkataramanan
>> wrote:
>> >> If I compile on a k8 Opteron 248 with -m
: Re: option -mprfchw on 2 different Opteron cpus
>
> On Mon, May 2, 2016 at 5:55 AM, Kumar, Venkataramanan
> wrote:
> >> If I compile on a k8 Opteron 248 with -march=native, I do not see
> >> -mprfchw listed in the options in -fverbose-asm. In the assembly, I see
>
On Mon, May 2, 2016 at 5:55 AM, Kumar, Venkataramanan
wrote:
>> If I compile on a k8 Opteron 248 with -march=native, I do not see -mprfchw
>> listed in the options in -fverbose-asm. In the assembly, I see this:
>>
>> prefetcht0 (%rax) # ivtmp.1160
>> prefetcht0 304(%rcx) #
>> pre
Hi,
> -Original Message-
> From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of
> NightStrike
> Sent: Monday, May 2, 2016 1:55 AM
> To: gcc@gcc.gnu.org
> Cc: Jan Hubicka ; Jakub Jelinek
> Subject: option -mprfchw on 2 different Opteron cpus
>
Reposting from here:
https://gcc.gnu.org/ml/gcc-help/2016-05/msg3.html
Not sure if this applies:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54210
If I compile on a k8 Opteron 248 with -march=native, I do not see
-mprfchw listed in the options in -fverbose-asm. In the assembly, I
see this:
