How this works? First we check which immediates are used as vectors,
i.e., have any reads that are using 2 or more channels. Such immdeiates
will be places in a free slots (but only the specific channels that are
used in the vector). This way we don't have to worry about swizzling
restrictions. The remaining scalar immediates will be checked for
duplicates and placed in free slots, including any empty slots in
previously places vector immediates (any swizzle is valid for scalars).
RV410:
total instructions in shared programs: 98883 -> 98905 (0.02%)
instructions in affected programs: 15414 -> 15436 (0.14%)
helped: 100
HURT: 102
total presub in shared programs: 2235 -> 2235 (0.00%)
presub in affected programs: 608 -> 608 (0.00%)
helped: 51
HURT: 72
total omod in shared programs: 419 -> 418 (-0.24%)
omod in affected programs: 15 -> 14 (-6.67%)
helped: 3
HURT: 3
total temps in shared programs: 15698 -> 15692 (-0.04%)
temps in affected programs: 952 -> 946 (-0.63%)
helped: 46
HURT: 37
total consts in shared programs: 84458 -> 83856 (-0.71%)
consts in affected programs: 14648 -> 14046 (-4.11%)
helped: 499
HURT: 0
total cycles in shared programs: 156476 -> 156493 (0.01%)
cycles in affected programs: 22532 -> 22549 (0.08%)
helped: 100
HURT: 102
LOST: shaders/ck2/157.shader_test FS
GAINED: shaders/ck2/160.shader_test FS
GAINED: shaders/tesseract/395.shader_test FS
RV530:
total instructions in shared programs: 119543 -> 119612 (0.06%)
instructions in affected programs: 27435 -> 27504 (0.25%)
helped: 118
HURT: 183
total presub in shared programs: 7257 -> 7111 (-2.01%)
presub in affected programs: 1856 -> 1710 (-7.87%)
helped: 121
HURT: 48
total omod in shared programs: 426 -> 427 (0.23%)
omod in affected programs: 5 -> 6 (20.00%)
helped: 1
HURT: 2
total temps in shared programs: 16784 -> 16779 (-0.03%)
temps in affected programs: 392 -> 387 (-1.28%)
helped: 29
HURT: 17
total consts in shared programs: 93198 -> 92667 (-0.57%)
consts in affected programs: 14577 -> 14046 (-3.64%)
helped: 451
HURT: 0
total cycles in shared programs: 186649 -> 186590 (-0.03%)
cycles in affected programs: 26306 -> 26247 (-0.22%)
helped: 125
HURT: 111
Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com>
Reviewed-by: Filip Gawin <filip.gawin@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28630>
Pavel Ondračka
0c96b03fcf