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Hello community,

This PR links to #10064. 5 ops (scatter, scatter_add, scatter_nd, unravel_index, adv_index) accept unsigned integers as indices. Somehow unravel_index with uint indices may raise

Check failed: y != 0 (0 vs. 0) 

in function

ICHECK_NE(y, 0);
.

I tried to figure out why shape[v] can be 0 in

cur_val = indexdiv(indices_divs.back(), shape[v]);
,
but I failed to understand.

Thank reviewers for your help and your time speeding in CR.

cc @AndrewZhaoLuo

@AndrewZhaoLuo
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AndrewZhaoLuo commented Jan 28, 2022

Debugging I've worked the issue to likely src/tir/transforms/narrow_datatype.cc, my guess analysis here does not take into account uint types

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#10102 <-- fix here. There is another error now with unravel index now though. You can try digging more, or you can drop unravel_index for later PR (which I recommend)

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LGTM mostly, just lmk the plan to deal with unravel_index

@yuanfz98
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yuanfz98 commented Jan 29, 2022

LGTM mostly, just lmk the plan to deal with unravel_index

Thanks for your help! I prefer to drop unravel_index and open a PR later.

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LGTM

@AndrewZhaoLuo AndrewZhaoLuo merged commit 1f9c76b into apache:main Jan 30, 2022
ylc pushed a commit to ylc/tvm that referenced this pull request Feb 16, 2022
* tests passed

* reformat

* add uint test for unravel_index
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2 participants