The comment above is correct, but the code to calculate the mask was broken.
No Foz-db changes outside of noise.
Fixes:
0e6581b87dc ("nir/algebraic: Reassociate shift-by-constant of shift-by-constant")
Signed-off-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15990>
# bits of the second source. These replacements must correctly handle the
# case where (b % bitsize) + (c % bitsize) >= bitsize.
for s in [8, 16, 32, 64]:
- mask = (1 << s) - 1
+ mask = s - 1
ishl = "ishl@{}".format(s)
ishr = "ishr@{}".format(s)