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pan/mdg: Use more accurate ld/st reg estimates

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And assert that we got them right.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11123>
This commit is contained in:
Alyssa Rosenzweig 2021-06-09 13:17:04 -04:00 • committed by Marge Bot
parent 68846ba4a8
commit edbdf4f4e7
1 changed files with 13 additions and 5 deletions
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18
src/panfrost/midgard/midgard_schedule.c
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@ -530,13 +530,21 @@ mir_pipeline_count(midgard_instruction *ins)
/* Skip empty source */
if (ins->src[i] == ~0) continue;
unsigned bytemask = mir_bytemask_of_read_components_index(ins, i);
unsigned max = util_logbase2(bytemask) + 1;
bytecount += max;
if (i == 0) {
/* First source is a vector, worst-case the mask */
unsigned bytemask = mir_bytemask_of_read_components_index(ins, i);
unsigned max = util_logbase2(bytemask) + 1;
bytecount += max;
} else {
/* Sources 1 on are scalars */
bytecount += 4;
}
}
return DIV_ROUND_UP(bytecount, 16);
unsigned dwords = DIV_ROUND_UP(bytecount, 16);
assert(dwords <= 2);
return dwords;
}
/* Matches FADD x, x with modifiers compatible. Since x + x = x * 2, for