[PATCH] D101357: [CodeGen][AArch64][SVE] Fold [rdffr, ptest] => rdffrs; bugfix for optimizePTestInstr

Paul Walker via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed May 12 04:52:32 PDT 2021


paulwalker-arm added inline comments.


================
Comment at: llvm/lib/Target/AArch64/AArch64InstrInfo.cpp:1389-1392
   // If the predicate is in a different block (possibly because its been
   // hoisted out), then assume the flags are set in between statements.
   if (Pred->getParent() != PTest->getParent())
     return false;
----------------
I believe this case is handled within areCFlagsAccessedBetweenInstrs, making this redundant code that can be removed?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D101357/new/

https://reviews.llvm.org/D101357



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