Vendor import of stripped llvm trunk r375505, the last commit before thevendor/llvm/llvm-trunk-r375505vendor/llvm

upstream Subversion repository was made read-only, and the LLVM project
migrated to GitHub:

https://llvm.org/svn/llvm-project/llvm/trunk@375505

1 files changed, 10 insertions, 6 deletions

diff --git a/include/llvm/Analysis/LegacyDivergenceAnalysis.h b/include/llvm/Analysis/LegacyDivergenceAnalysis.h
index 0a338b816640..e33b8f4129f3 100644
--- a/include/llvm/Analysis/LegacyDivergenceAnalysis.h
+++ b/include/llvm/Analysis/LegacyDivergenceAnalysis.h
@@ -39,17 +39,18 @@ public:
   void print(raw_ostream &OS, const Module *) const override;
 
   // Returns true if V is divergent at its definition.
-  //
-  // Even if this function returns false, V may still be divergent when used
-  // in a different basic block.
   bool isDivergent(const Value *V) const;
 
+  // Returns true if U is divergent. Uses of a uniform value can be divergent.
+  bool isDivergentUse(const Use *U) const;
+
   // Returns true if V is uniform/non-divergent.
-  //
-  // Even if this function returns true, V may still be divergent when used
-  // in a different basic block.
   bool isUniform(const Value *V) const { return !isDivergent(V); }
 
+  // Returns true if U is uniform/non-divergent. Uses of a uniform value can be
+  // divergent.
+  bool isUniformUse(const Use *U) const { return !isDivergentUse(U); }
+
   // Keep the analysis results uptodate by removing an erased value.
   void removeValue(const Value *V) { DivergentValues.erase(V); }
 
@@ -62,6 +63,9 @@ private:
 
   // Stores all divergent values.
   DenseSet<const Value *> DivergentValues;
+
+  // Stores divergent uses of possibly uniform values.
+  DenseSet<const Use *> DivergentUses;
 };
 } // End llvm namespace