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86947062e9
So we can pull other values from devinfo struct. Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37805>
43 lines
794 B
Lua
43 lines
794 B
Lua
--[[
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Execute the example from the Dot Product 4 Accumulate
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instruction as seen in the PRM.
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mov (1) r1.0:d 0x0102037F:d
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// (char4)(0x1,0x2,0x3,0x7F)
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mov (1) r2.0:d 50:d
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dp4a (1) r3.0:d r2:d r1:d r1:d
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// r3.0 = 50 + (0x1*0x1 + 0x2*0x2 + 0x3*0x3 + 0x7F*0x7F)
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// = 50 + (1 + 4 + 9 + 16129)
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// = 16193
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--]]
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if devinfo.ver < 12 then
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error("DP4A instruction requires Gfx12+")
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end
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function DP4A(a, b, c)
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local r = c
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for i = 1, 4 do
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r = r + a[i] * b[i]
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end
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return r
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end
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local r = execute {
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src = [[
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@id g9
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@mov g1 0x0102037F
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@mov g2 50
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dp4a(8) g3<1>UD g2<8,8,1>UD g1<8,8,1>UD g1<8,8,1>UD { align1 @1 1Q };
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@write g9 g3
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@eot
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]],
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}
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print("expected", DP4A({1,2,3,0x7F}, {1,2,3,0x7F}, 50))
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print("calculated", r[0])
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