linux_dsm_epyc7002/drivers/gpu/drm/amd/display
Nick Desaulniers 0f0727d971 drm/amd/display: readd -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 for Clang.

This was originally landed in:
commit 1011745073 ("drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines")
but reverted in:
commit 193392ed9f ("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>
2019-07-30 23:18:33 -05:00
..
amdgpu_dm drm/amd/display: add dcc programming for dual plane 2019-07-18 14:27:26 -05:00
dc drm/amd/display: readd -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines 2019-07-30 23:18:33 -05:00
include drm/amd/display: handle active dongle port type is DP++ or DP case 2019-07-18 14:27:27 -05:00
modules drm/amd/display: Optimize gamma calculations 2019-07-18 14:27:25 -05:00
Kconfig drm/amd/display: Add drm_audio_component support to amdgpu_dm 2019-07-11 14:37:24 -05:00
Makefile drm/amd/display: move clk_mgr files to right place 2019-05-31 10:39:31 -05:00
TODO drm/amd/display: Convert remaining loggers off dc_logger 2018-07-13 14:48:42 -05:00