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[FIX][TIR] Fix fixed-point multiply legalization - #20341

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sepcnt wants to merge 2 commits into
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sepcnt:q-multiply-shift-legalize
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sepcnt wants to merge 2 commits into
apache:mainfrom
sepcnt:q-multiply-shift-legalize

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@sepcnt

@sepcnt sepcnt commented Sep 15, 2026

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Handle runtime operands, zero-exponent scaling, and integer per-axis flags. Restrict the fast path to Q31.

Fixes #20340.
Fixes tile-ai/tilelang#3014.
Fixes tile-ai/tilelang#3003.
Fixes tile-ai/tilelang#3006.

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