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nir/instr_set: hash tex sources commutatively

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I'm not sure if two otherwise equal texture instructions ever have sources
in different orders, but they should be considered equal.

ministat of nir_opt_cse:
    N           Min           Max        Median           Avg        Stddev
x   9      6.586801      6.718673      6.682875     6.6621411   0.047817119
+   9      6.519098      6.609235      6.552997     6.5605604   0.028879587
Difference at 95.0% confidence
	-0.101581 +/- 0.0394755
	-1.52475% +/- 0.585928%
	(Student's t, pooled s = 0.0395)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Tatsuyuki Ishi <ishitatsuyuki@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30145>
This commit is contained in:
Rhys Perry
2024-07-01 17:01:08 +01:00
committed by Marge Bot
parent b7ceb9d327
commit 3aa29c47b9
1 changed files with 2 additions and 4 deletions
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src/compiler/nir/nir_instr_set.c
+2 -4
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@@ -240,10 +240,8 @@ hash_tex(uint32_t hash, const nir_tex_instr *instr)
memcpy(v + 20, &backend_flags, 4);
hash = XXH32(v, sizeof(v), hash);
for (unsigned i = 0; i < instr->num_srcs; i++) {
hash = HASH(hash, instr->src[i].src_type);
hash = hash_src(hash, &instr->src[i].src);
}
for (unsigned i = 0; i < instr->num_srcs; i++)
hash *= hash_src(0, &instr->src[i].src);
return hash;
}