Re: [PATCH] Revert "drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines"

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On 2019-01-29 11:57 a.m., Alex Deucher wrote:
> This reverts commit 10117450735c7a7c0858095fb46a860e7037cb9a.
> 
> Causes a crash.
> 
> Bug: https://bugs.freedesktop.org/show_bug.cgi?id=109487
> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx # 4.19

Thanks for finding and reverting.

Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>

Harry

> ---
>  drivers/gpu/drm/amd/display/dc/calcs/Makefile | 2 +-
>  drivers/gpu/drm/amd/display/dc/dml/Makefile   | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
> index dc85a3c088af..95f332ee3e7e 100644
> --- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
> @@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
>  	cc_stack_align := -mstack-alignment=16
>  endif
>  
> -calcs_ccflags := -mhard-float -msse -msse2 $(cc_stack_align)
> +calcs_ccflags := -mhard-float -msse $(cc_stack_align)
>  
>  CFLAGS_dcn_calcs.o := $(calcs_ccflags)
>  CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> index 33c7d7588712..d97ca6528f9d 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> @@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
>  	cc_stack_align := -mstack-alignment=16
>  endif
>  
> -dml_ccflags := -mhard-float -msse -msse2 $(cc_stack_align)
> +dml_ccflags := -mhard-float -msse $(cc_stack_align)
>  
>  CFLAGS_display_mode_lib.o := $(dml_ccflags)
>  CFLAGS_display_pipe_clocks.o := $(dml_ccflags)
> 




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