Gopal V created HIVE-11457:
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Summary: Vectorization: Improve SIMD JIT in GenVectorCode
StringExpr instrinsics
Key: HIVE-11457
URL: https://issues.apache.org/jira/browse/HIVE-11457
Project: Hive
Issue Type: Improvement
Components: Vectorization
Affects Versions: 2.0.0
Reporter: Gopal V
Assignee: Gopal V
Fix For: 2.0.0
With HIVE-11406, the Vectorization codegen generates a new and specialized
fast-path for equality (and non equality), which removed the ordering and
comparison constraints in the old codepath.
The equality operation can be much more pipeline and cache line efficient by
keeping on comparing even when an inequality has been detected.
Optimize the single loop into a pair of loops, to allow the Vectorization
codegen to use tighter loops that the JIT superword optimization can understand.
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