1 files changed, 7 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/include/llvm/Analysis/ScalarEvolution.h b/contrib/llvm-project/llvm/include/llvm/Analysis/ScalarEvolution.h
index af3ad822e0b0..0880f9c65aa4 100644
--- a/contrib/llvm-project/llvm/include/llvm/Analysis/ScalarEvolution.h
+++ b/contrib/llvm-project/llvm/include/llvm/Analysis/ScalarEvolution.h
@@ -1314,6 +1314,13 @@ public:
   void getPoisonGeneratingValues(SmallPtrSetImpl<const Value *> &Result,
                                  const SCEV *S);
 
+  /// Check whether it is poison-safe to represent the expression S using the
+  /// instruction I. If such a replacement is performed, the poison flags of
+  /// instructions in DropPoisonGeneratingInsts must be dropped.
+  bool canReuseInstruction(
+      const SCEV *S, Instruction *I,
+      SmallVectorImpl<Instruction *> &DropPoisonGeneratingInsts);
+
   class FoldID {
     const SCEV *Op = nullptr;
     const Type *Ty = nullptr;