mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-23 14:02:06 -04:00
0f0727d971
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 for Clang. This was originally landed in: commit1011745073("drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines") but reverted in: commit193392ed9f("Revert "drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines"") due to bugreports from GCC builds. Add guards to only do so for Clang. Link: https://bugs.freedesktop.org/show_bug.cgi?id=109487 Link: https://github.com/ClangBuiltLinux/linux/issues/327 Suggested-by: Sedat Dilek <sedat.dilek@gmail.com> Suggested-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
26 lines
647 B
Makefile
26 lines
647 B
Makefile
#
|
|
# Makefile for the 'dsc' sub-component of DAL.
|
|
|
|
ifneq ($(call cc-option, -mpreferred-stack-boundary=4),)
|
|
cc_stack_align := -mpreferred-stack-boundary=4
|
|
else ifneq ($(call cc-option, -mstack-alignment=16),)
|
|
cc_stack_align := -mstack-alignment=16
|
|
endif
|
|
|
|
dsc_ccflags := -mhard-float -msse $(cc_stack_align)
|
|
|
|
ifdef CONFIG_CC_IS_CLANG
|
|
dsc_ccflags += -msse2
|
|
endif
|
|
|
|
CFLAGS_rc_calc.o := $(dsc_ccflags)
|
|
CFLAGS_rc_calc_dpi.o := $(dsc_ccflags)
|
|
CFLAGS_codec_main_amd.o := $(dsc_ccflags)
|
|
CFLAGS_dc_dsc.o := $(dsc_ccflags)
|
|
|
|
DSC = dc_dsc.o rc_calc.o rc_calc_dpi.o
|
|
|
|
AMD_DAL_DSC = $(addprefix $(AMDDALPATH)/dc/dsc/,$(DSC))
|
|
|
|
AMD_DISPLAY_FILES += $(AMD_DAL_DSC)
|