[PATCH 4/6] drm/amd/display: fix dcn21 Makefile for clang

[Arnd Bergmann]

On Wed, Oct 2, 2019 at 4:17 PM Alex Deucher <alexdeucher at gmail.com> wrote:
>
> I'm getting an error with gcc with this patch:
>   CC [M]  drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.o
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c: In
> function ‘calculate_wm_set_for_vlevel’:
> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.c:964:22:
> error: SSE register return with SSE disabled

I checked again with gcc-8, but do not see that error message.

> > -CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse -mpreferred-stack-boundary=4
> > +CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse $(cc_stack_align)

Nothing should really change with regards to the -msse flag here, only
the stack alignment flag changed. Maybe there was some other change
in your Makefile that conflicts with my my patch?

       Arnd