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| author | Nick Desaulniers <[email protected]> | 2019-07-22 22:31:05 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2019-07-31 04:18:33 +0000 |
| commit | 0f0727d971f6fdf8f1077180d495ddb9928f0c8b (patch) | |
| tree | c8a1ce04004038ef7e4ff58a72b472923050f66b /drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | |
| parent | drm/amdkfd: Fix byte align on VegaM (diff) | |
| download | kernel-0f0727d971f6fdf8f1077180d495ddb9928f0c8b.tar.gz kernel-0f0727d971f6fdf8f1077180d495ddb9928f0c8b.zip | |
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 10117450735c ("drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines")
but reverted in:
commit 193392ed9f69 ("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 <[email protected]>
Suggested-by: Sami Tolvanen <[email protected]>
Signed-off-by: Nick Desaulniers <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c')
0 files changed, 0 insertions, 0 deletions