[rfc] nopl should not be output on -mtune=i686

[H.J. Lu]

On Tue, Feb 8, 2011 at 11:01 AM, Jan Kratochvil
<jan.kratochvil@redhat.com> wrote:
> On Tue, 08 Feb 2011 18:23:35 +0100, H.J. Lu wrote:
>> On Tue, Feb 8, 2011 at 9:10 AM, Jan Kratochvil
>> <jan.kratochvil@redhat.com> wrote:
>> > Current binutils HEAD:
>> > -march | -mtune  | nopl used?  | after the attached patch: nopl used?
>> >  -    |   -     |    no       | no
>> >  i686  | -/i686  |    no       | no
>> >  -    |   i686  |   yes = BUG | no
>> >  core2 | -/core2 |   yes       | yes
>> >  -    |   core2 |   yes = BUG | no
>> >
>> > => Currently suppressing -march now produces more advanced code output, this
>> >   does not seem correct to me.
>>
>> By default, x86 assembler assumes that the target processor accepts
>> any instructions.  You can restrict ISA sets by -march and .arch directive.
>
> Aha, in such case the system build should use some specific -march anyway and
> not just to disable `nopl'.
>
> Andreas Schwab has reopened now this one, it should be NOTABUG:
> http://sourceware.org/bugzilla/show_bug.cgi?id=6957
>

I will see what I can do.


-- 
H.J.