tree a647e5321aab42d57c48dc5bf5eef8d8fbe4321d
parent 1aada43632919ee71ad1c0b26d179b2f29be0ab9
author Manupa Karunaratne <manupa.karunaratne@amd.com> 1732128170 +0000
committer GitHub <noreply@github.com> 1732128170 +0000
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[LLVMGPUVectorDistribute] Fix vector step distribute (#19227)

Currently, the 'thread_stride' of NestedLayoutAttr is misinterpreted as
the access stride of multi-dimensional vector.

However, it turns out it correspond to tid -> vtid mapping and the
undistributed vector is packed as :
subgroup x batch x outer x thread x element
where vtid is used to index 'thread' dimension.

Therefore, this commit removes the usage of 'thread_stride's and
'subgroups_stride' when calculating the base constant offset and rather
obtain them from packed undistributed vector shape.

Signed-off-by: Manupa Karunaratne <manupa.karunaratne@amd.com>