Index: include/llvm/Support/BranchProbability.h
===================================================================
--- include/llvm/Support/BranchProbability.h
+++ include/llvm/Support/BranchProbability.h
@@ -129,27 +129,32 @@
 
   BranchProbability operator+(BranchProbability RHS) const {
     BranchProbability Prob(*this);
-    return Prob += RHS;
+    Prob += RHS;
+    return Prob;
   }
 
   BranchProbability operator-(BranchProbability RHS) const {
     BranchProbability Prob(*this);
-    return Prob -= RHS;
+    Prob -= RHS;
+    return Prob;
   }
 
   BranchProbability operator*(BranchProbability RHS) const {
     BranchProbability Prob(*this);
-    return Prob *= RHS;
+    Prob *= RHS;
+    return Prob;
   }
 
   BranchProbability operator*(uint32_t RHS) const {
     BranchProbability Prob(*this);
-    return Prob *= RHS;
+    Prob *= RHS;
+    return Prob;
   }
 
   BranchProbability operator/(uint32_t RHS) const {
     BranchProbability Prob(*this);
-    return Prob /= RHS;
+    Prob /= RHS;
+    return Prob;
   }
 
   bool operator==(BranchProbability RHS) const { return N == RHS.N; }
Index: lib/Target/AArch64/AArch64ISelLowering.cpp
===================================================================
--- lib/Target/AArch64/AArch64ISelLowering.cpp
+++ lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -7842,7 +7842,7 @@
   Cmp = DAG.getSExtOrTrunc(Cmp, dl, Op.getValueType());
 
   if (ShouldInvert)
-    return Cmp = DAG.getNOT(dl, Cmp, Cmp.getValueType());
+    Cmp = DAG.getNOT(dl, Cmp, Cmp.getValueType());
 
   return Cmp;
 }