[PATCH] D106053: [CodeGen] Remove pending AssertZext AssertSext in promoting FP_TO_INT

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Sat Jul 17 12:44:47 PDT 2021


RKSimon added a comment.

Its been a a long week and with that and timezone differences I have been really struggling to keep up with the pace and direction of this patch - are you saying that we can't depend on value tracking in the DAG for manipulation of vector elements? If D106222 <https://reviews.llvm.org/D106222> make this whole thing go away then so be it, but all its doing is asking if a blend with zero shuffle is necessary or if that element is already known to be zero - we do a lot of other similar combines for shuffles (packs relying on zero/sign upper bits etc.) and otherwise.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D106053/new/

https://reviews.llvm.org/D106053



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