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Posted to commits@tvm.apache.org by GitBox <gi...@apache.org> on 2022/06/21 04:38:43 UTC

[GitHub] [tvm] junrushao1994 commented on pull request #11795: [CodeGen][LLVM] Lower if_then_else() with select

junrushao1994 commented on PR #11795:
URL: https://github.com/apache/tvm/pull/11795#issuecomment-1161258565

   Quick question: in TIR, `T.Select` means both branches are executed no matter which value the conditional is evaluated to - which brings benefits that make it vectorizable in certain cases. However, if the conditional is a safeguard to avoid access out of buffer boundary, replacing it with `T.Select` will lead the program to crash. Therefore, I would love to learn if our implementation here in LLVM codegen will lead to the same effect? Thanks a lot!


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