f001515c87
SGPR offset is not included in the bounds check
according to the ISA documentation of GFX6-7 and
indeed it can trigger VM faults on OOB access.
Note that ACO already doesn't use the SGPR offset
on GFX6-7 for buffer loads and stores. This commit
just does the same for buffer atomics.
This commit mitigates a ton of VM faults that are exposed by:
24e75fea4b
Fossil DB stats on Hawaii (GFX7):
Totals from 148 (0.24% of 61818) affected shaders:
Instrs: 324004 -> 327352 (+1.03%)
CodeSize: 1556468 -> 1514100 (-2.72%); split: -2.74%, +0.02%
Latency: 1271480 -> 1276894 (+0.43%)
InvThroughput: 396850 -> 397740 (+0.22%)
VClause: 6861 -> 6858 (-0.04%)
Copies: 34083 -> 37430 (+9.82%)
PreVGPRs: 5705 -> 5706 (+0.02%)
VALU: 147529 -> 150898 (+2.28%)
SALU: 98194 -> 98172 (-0.02%)
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38958>
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