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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>
52 lines
1.9 KiB
Makefile
52 lines
1.9 KiB
Makefile
#
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# Copyright 2017 Advanced Micro Devices, Inc.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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# OTHER DEALINGS IN THE SOFTWARE.
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#
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#
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# Makefile for the 'calcs' sub-component of DAL.
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# It calculates Bandwidth and Watermarks values for HW programming
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#
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ifneq ($(call cc-option, -mpreferred-stack-boundary=4),)
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cc_stack_align := -mpreferred-stack-boundary=4
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else ifneq ($(call cc-option, -mstack-alignment=16),)
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cc_stack_align := -mstack-alignment=16
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endif
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calcs_ccflags := -mhard-float -msse $(cc_stack_align)
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ifdef CONFIG_CC_IS_CLANG
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calcs_ccflags += -msse2
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endif
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CFLAGS_dcn_calcs.o := $(calcs_ccflags)
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CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)
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CFLAGS_dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare
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BW_CALCS = dce_calcs.o bw_fixed.o custom_float.o
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ifdef CONFIG_DRM_AMD_DC_DCN1_0
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BW_CALCS += dcn_calcs.o dcn_calc_math.o dcn_calc_auto.o
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endif
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AMD_DAL_BW_CALCS = $(addprefix $(AMDDALPATH)/dc/calcs/,$(BW_CALCS))
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AMD_DISPLAY_FILES += $(AMD_DAL_BW_CALCS)
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