[PATCH] D72467: [WIP] Remove "mask" operand from shufflevector.

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added inline comments.


================
Comment at: llvm/lib/Analysis/InstructionSimplify.cpp:4413
                                         unsigned MaxRecurse) {
-  if (isa<UndefValue>(Mask))
+  if (all_of(Mask, [](int Elem) { return Elem == -1; }))
     return UndefValue::get(RetTy);
----------------
maybe introduce new helper function to check if mask is "undef"?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72467/new/

https://reviews.llvm.org/D72467