Fix shift_[left/right] for small shift values - #2824

Merged

danhoeflinger merged 23 commits into

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dev/dhoeflin/autoperf/shift_reverse

Sep 21, 2026

Commits on Sep 4, 2026

Rotate instead of walking in place for a narrow hetero shift

danhoeflinger
and
claude
committed
161d1fc
Widen the shift rotate's parallelism bound to width/64
danhoeflinger
committed
870b25c
[shift] Restrict the rotate path and correct its comments
danhoeflinger
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48bc2e3
gate for non positive or total shifts
danhoeflinger
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288dd57
simplifying threshold logic for kernels
danhoeflinger
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c7bc747
update thresholds with empirical data
danhoeflinger
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f8fef3e
[shift] Adapt the ranges shift guard to main's parameter rename
danhoeflinger
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d21b093
[shift] Keep the rotate gate safe in a release build
danhoeflinger
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16b7494
[shift] Derive the test's rotate cases from the two-clause gate
danhoeflinger
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ffe6626
cleanup, simplify
danhoeflinger
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e0b7ffd
remove unused function
danhoeflinger
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41de574

Commits on Sep 8, 2026

improve comments
danhoeflinger
committed
8fa6dd4
non power of 2 test

danhoeflinger
and
Copilot
authored
9fdb2a6

Commits on Sep 17, 2026

[shift] Label the rotate gate's two empirical constants

danhoeflinger
and
claude
committed
0e63734
[shift] Express the rotate gate's width bound as bytes in flight per EU

danhoeflinger
and
claude
committed
3c5bcf5
improve comments, naming
danhoeflinger
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783def8
address feedback
danhoeflinger
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309863e
remove redundant end case checks
danhoeflinger
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df0b5fd
address more feedback
danhoeflinger
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eb7176a
fix clang formatting
danhoeflinger
committed
3cb3259

Commits on Sep 18, 2026

address feedback
danhoeflinger
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b38d36b
restore comment
danhoeflinger
committed
be43112
reverting extra whitespace
danhoeflinger
committed
6190d9b