On Wed, 2020-04-22 at 07:59 -0500, Segher Boessenkool wrote:
> Hi!
>
> On Tue, Apr 21, 2020 at 04:53:53PM -0500, Aaron Sawdey via Gcc-
> patches wrote:
> > For future architecture with prefix instructions, always use
> > plq/pstq
> > rather than lq/stq for atomic load of quadword. Then we never
Hi!
On Tue, Apr 21, 2020 at 04:53:53PM -0500, Aaron Sawdey via Gcc-patches wrote:
> For future architecture with prefix instructions, always use plq/pstq
> rather than lq/stq for atomic load of quadword. Then we never have to
> do the doubleword swap on little endian. Before this fix, -mno-pcrel
For future architecture with prefix instructions, always use plq/pstq
rather than lq/stq for atomic load of quadword. Then we never have to
do the doubleword swap on little endian. Before this fix, -mno-pcrel
would generate lq with the doubleword swap (which was ok) and -mpcrel
would generate plq,
