drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines
arch/x86/Makefile disables SSE and SSE2 for the whole kernel. The AMDGPU drivers modified in this patch re-enable SSE but not SSE2. Turn on SSE2 to support emitting double precision floating point instructions rather than calls to non-existent (usually available from gcc_s or compiler_rt) floating point helper routines. Link: https://gcc.gnu.org/onlinedocs/gccint/Soft-float-library-routines.html Link: https://github.com/ClangBuiltLinux/linux/issues/327 Cc: stable@vger.kernel.org # 4.19 Reported-by: S, Shirish <Shirish.S@amd.com> Reported-by: Matthias Kaehlcke <mka@google.com> Suggested-by: James Y Knight <jyknight@google.com> Suggested-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Matthias Kaehlcke <mka@chromium.org> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
parent
5eeb3f62a5
commit
1011745073
|
@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
|
|||
cc_stack_align := -mstack-alignment=16
|
||||
endif
|
||||
|
||||
calcs_ccflags := -mhard-float -msse $(cc_stack_align)
|
||||
calcs_ccflags := -mhard-float -msse -msse2 $(cc_stack_align)
|
||||
|
||||
CFLAGS_dcn_calcs.o := $(calcs_ccflags)
|
||||
CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)
|
||||
|
|
|
@ -30,7 +30,7 @@ else ifneq ($(call cc-option, -mstack-alignment=16),)
|
|||
cc_stack_align := -mstack-alignment=16
|
||||
endif
|
||||
|
||||
dml_ccflags := -mhard-float -msse $(cc_stack_align)
|
||||
dml_ccflags := -mhard-float -msse -msse2 $(cc_stack_align)
|
||||
|
||||
CFLAGS_display_mode_lib.o := $(dml_ccflags)
|
||||
CFLAGS_display_pipe_clocks.o := $(dml_ccflags)
|
||||
|
|
Loading…
Reference in New Issue