[PATCH] D63963: [Codegen][SelectionDAG] X u% C == 0 fold: non-splat vector improvements

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp:4468
+  // Is there a value for which the Predicate does *NOT* match? What is it?
+  if (SDValue *SplatValue = llvm::find_if_not(Values, Predicate)) {
+    // Does Values consist only of SplatValue's and values matching Predicate?
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RKSimon wrote:
> I haven't used find_if_not before - so this is guaranteed to return nullptr for no match?
Whoops, neither llvm wrappers nor the STL versions return nullptr here, this should be checking for `!= Values.end()`
Thanks!


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  https://reviews.llvm.org/D63963/new/

https://reviews.llvm.org/D63963