vendor/llvm/llvm-release_70-r348011

2 files changed, 7 insertions, 4 deletions

diff --git a/include/llvm/Transforms/Utils/SSAUpdater.h b/include/llvm/Transforms/Utils/SSAUpdater.h
index 4a79116629902..d02607acbbb57 100644
--- a/include/llvm/Transforms/Utils/SSAUpdater.h
+++ b/include/llvm/Transforms/Utils/SSAUpdater.h
@@ -76,6 +76,10 @@ public:
   /// block.
   bool HasValueForBlock(BasicBlock *BB) const;
 
+  /// Return the value for the specified block if the SSAUpdater has one,
+  /// otherwise return nullptr.
+  Value *FindValueForBlock(BasicBlock *BB) const;
+
   /// Construct SSA form, materializing a value that is live at the end
   /// of the specified block.
   Value *GetValueAtEndOfBlock(BasicBlock *BB);
diff --git a/include/llvm/Transforms/Utils/SSAUpdaterImpl.h b/include/llvm/Transforms/Utils/SSAUpdaterImpl.h
index b7649ba883344..cab0f3e715757 100644
--- a/include/llvm/Transforms/Utils/SSAUpdaterImpl.h
+++ b/include/llvm/Transforms/Utils/SSAUpdaterImpl.h
@@ -357,10 +357,9 @@ public:
       BBInfo *Info = *I;
 
       if (Info->DefBB != Info) {
-        // Record the available value at join nodes to speed up subsequent
-        // uses of this SSAUpdater for the same value.
-        if (Info->NumPreds > 1)
-          (*AvailableVals)[Info->BB] = Info->DefBB->AvailableVal;
+        // Record the available value to speed up subsequent uses of this
+        // SSAUpdater for the same value.
+        (*AvailableVals)[Info->BB] = Info->DefBB->AvailableVal;
         continue;
       }