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agx: fuse iadd+large shift into imad

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total instructions in shared programs: 2750352 -> 2750211 (<.01%)
instructions in affected programs: 86944 -> 86803 (-0.16%)
helped: 32
HURT: 18
Instructions are helped.

total alu in shared programs: 2273810 -> 2273669 (<.01%)
alu in affected programs: 76720 -> 76579 (-0.18%)
helped: 32
HURT: 18
Alu are helped.

total fscib in shared programs: 2272127 -> 2271986 (<.01%)
fscib in affected programs: 76720 -> 76579 (-0.18%)
helped: 32
HURT: 18
Fscib are helped.

total bytes in shared programs: 21476424 -> 21475184 (<.01%)
bytes in affected programs: 649884 -> 648644 (-0.19%)
helped: 33
HURT: 18
Bytes are helped.

total regs in shared programs: 865114 -> 865090 (<.01%)
regs in affected programs: 525 -> 501 (-4.57%)
helped: 3
HURT: 0

total uniforms in shared programs: 2120792 -> 2120848 (<.01%)
uniforms in affected programs: 414 -> 470 (13.53%)
helped: 0
HURT: 8
Uniforms are HURT.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32081>
This commit is contained in:
Alyssa Rosenzweig
2024-11-04 13:59:36 -04:00
committed by Marge Bot
parent c9e42073a1
commit f737470736
1 changed files with 6 additions and 0 deletions
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src/asahi/compiler/agx_nir_algebraic.py
+6
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@@ -189,6 +189,12 @@ for s in range(1, 5):
(('ishl', a, s), iaddshl(0, a, s)),
]
# If the above rules failed, we have a large constant shift on the IC unit.
# Might as well fuse an add to form an imad, if we're on the IC anyway.
fuse_imad += [
(('iadd', a, ('ishl(is_used_once)', b, '#c')), imad(b, ('ishl', 1, c), a)),
]
# Discard lowering generates this pattern, clean it up
ixor_bcsel = [
(('ixor', ('bcsel', a, '#b', '#c'), '#d'),