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clang warns about the -mhard-float command line arguments
on architectures that do not support this:
clang: error: argument unused during compilation: '-mhard-float' [-Werror,-Wunused-command-line-argument]
Move this into the gcc-specific arguments.
Fixes: e77165bf7b02 ("drm/amd/display: Add DCN3 blocks to Makefile")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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From Ard:
"Simply disabling -mgeneral-regs-only left and right is risky, given that
the standard AArch64 ABI permits the use of FP/SIMD registers anywhere,
and GCC is known to use SIMD registers for spilling, and may invent
other uses of the FP/SIMD register file that have nothing to do with the
floating point code in question. Note that putting kernel_neon_begin()
and kernel_neon_end() around the code that does use FP is not sufficient
here, the problem is in all the other code that may be emitted with
references to SIMD registers in it.
So the only way to do this properly is to put all floating point code in
a separate compilation unit, and only compile that unit with
-mgeneral-regs-only."
Disable support until the code can be properly refactored to support this
properly on aarch64.
Acked-by: Will Deacon <will@kernel.org>
Reported-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add proper FP_START/END handling and adjust Makefiles per
previous asics.
v2: fix up harder.
v3: fix clkmgr Makefile for dcn30
v4: fix old gcc handling is only required for x86
Build-tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com> (v1)
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> (v1)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Properly handle clang and older versions of gcc.
Fixes: e77165bf7b02a3 ("drm/amd/display: Add DCN3 blocks to Makefile")
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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