git: amdgpu: Improve makefile for sources that require double floats

[Aaron LI]

commit c12d11212d71eede1a0b2511dad60449b742f390
Author: Aaron LI <aly at aaronly.me>
Date:   Fri Apr 17 12:46:10 2026 +0800

    amdgpu: Improve makefile for sources that require double floats
    
    * Use a '.for' loop expression to reduce duplicate.
    * Remove the unported/unavailable sources: dcn20_resource.o,
      dcn21_resource.o
    * Remove the unneeded '-mpreferred-stack-boundary=4' compiler flag,
      which is the default on x86_64.  (Linux's amdgpu requires this because
      the kernel sets '-mpreferred-stack-boundary=3' as the global default.)
    * Add '-msse2' to enable SSE2 and thus better generate double precision
      FP instructions. [1][2]
    
    [1] drm/amd/display: readd -msse2 to prevent Clang from emitting
        libcalls to undefined SW FP routines
        https://github.com/torvalds/linux/commit/0f0727d971f6fdf8f1077180d495ddb9928f0c8b
    [2] drm/amdgpu: enable -msse2 for GCC 7.1+ users
        https://github.com/torvalds/linux/commit/e8a170ff9a3576730e43c0dbdd27b7cd3dc56848

Summary of changes:
 sys/dev/drm/amd/amdgpu/Makefile | 28 ++++++++--------------------
 1 file changed, 8 insertions(+), 20 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/c12d11212d71eede1a0b2511dad60449b742f390


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