[GitHub] [incubator-tvm] kparzysz-quic commented on pull request #6066: [TIR][Transform] HoistIfThenElse added

[GitBox <gi...@apache.org>]

kparzysz-quic commented on pull request #6066:
URL: https://github.com/apache/incubator-tvm/pull/6066#issuecomment-663767437


   This is a limited case of "loop unswitching".  Please consider a more general solution, where
   ```
   for (i = 0..N) {
     // statement A
     if (invariant-condition) {
       // statement B
     } else {
       // statement C
     }
     // statement D
   }
   ```
   is transformed into
   ```
   if (invariant-condition) {
     for (i = 0..N) {
       // statement A
       // statement B
       // statement D
     }
   } else {
     for (i = 0..N) {
       // statement A
       // statement C
       // statement D
     }
   }
   ```
   
   Using the same logic you could unswitch attribute statements, if needed.


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