1 files changed, 20 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index 4d40ba8..70c77b0 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -1343,3 +1343,23 @@ void llvm::combineMetadata(Instruction *K, const Instruction *J, ArrayRef<unsign
     }
   }
 }
+
+unsigned llvm::replaceDominatedUsesWith(Value *From, Value *To,
+                                        DominatorTree &DT,
+                                        const BasicBlockEdge &Root) {
+  assert(From->getType() == To->getType());
+  
+  unsigned Count = 0;
+  for (Value::use_iterator UI = From->use_begin(), UE = From->use_end();
+       UI != UE; ) {
+    Use &U = *UI++;
+    if (DT.dominates(Root, U)) {
+      U.set(To);
+      DEBUG(dbgs() << "Replace dominated use of '"
+            << From->getName() << "' as "
+            << *To << " in " << *U << "\n");
+      ++Count;
+    }
+  }
+  return Count;
+}