================
@@ -322,6 +322,24 @@ class GVNPass : public OptionalPassInfoMixin<GVNPass> {
// List of critical edges to be split between iterations.
SmallVector<std::pair<Instruction *, unsigned>, 4> ToSplit;
+ // A pair of instructions with the same value number to be hoisted and
merged,
+ // together with their respective hoist barriers. A pair of insructions can
be
+ // hoisted iff both their barriers (if not null) are hoisted as well. The
+ // `WeakVH` is used to track when the barrier instruction itself is hoisted.
+ struct HoistPair {
+ Instruction *ThenI = nullptr;
+ Instruction *ThenB = nullptr;
+ Instruction *ElseI = nullptr;
+ WeakVH ElseB = nullptr;
----------------
aengelke wrote:
Is it possible to avoid value handles?
https://github.com/llvm/llvm-project/pull/210337
_______________________________________________
llvm-branch-commits mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
