Matt Arsenault 01c9a14ccf AMDGPU: Define v_mfma_f32_{16x16x128|32x32x64}_f8f6f4 instructions (#116723) ...

These use a new VOP3PX encoding for the v_mfma_scale_* instructions,
which bundles the pre-scale v_mfma_ld_scale_b32. None of the modifiers
are supported yet (op_sel, neg or clamp).

I'm not sure the intrinsic should really expose op_sel (or any of the
others). If I'm reading the documentation correctly, we should be able
to just have the raw scale operands and auto-match op_sel to byte
extract patterns.

The op_sel syntax also seems extra horrible in this usage, especially with the
usual assumed op_sel_hi=-1 behavior.

2024-11-21 08:51:58 -08:00

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