Matt Arsenault 49a533a485 AMDGPU: Stop introducing v_accvgpr_write_b32 for reg-to-reg copy (#129059) ...

This was trying to hack around the intermediate VGPR requirement
to copy to AGPRs on gfx908. We should still use a copy for all
reg-to-reg cases. This should matter less these days, as we
reserve a VGPR to handle it when required (and no end to end tests
need updating).

This was also an obstacle to handling this fold for input registers
which are larger than 32-bits.

2025-03-03 16:22:47 +07:00

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