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Rob Clark authored
The encoding of constant, relative, and relative-const src registers is a bit more complex than originally thought, which gives an extra bit to encode const reg # at expense of taking a bit from relative offset. In most cases a3xx seems to actually use a scheme whereby it can encode an extra bit for const register. You have three possible encodings in thirteen bits: register: (11 bits for N.c) 00........... rN.c relative: (10 bits for N) 010.......... r<a0.x + N> 011.......... c<a0.x + N> const: (12 bits for N.c) 1............ cN.c Which means we can deal w/ more consts than previously thought. Signed-off-by: Rob Clark <robclark@freedesktop.org>
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