Change all self assignments X=X to (void)X, so that we can turn on a
new gcc warning that complains on self-assignments and
self-initializations.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122458 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/AddrModeMatcher.cpp b/lib/Transforms/Utils/AddrModeMatcher.cpp
index b1cef96..be7bed1 100644
--- a/lib/Transforms/Utils/AddrModeMatcher.cpp
+++ b/lib/Transforms/Utils/AddrModeMatcher.cpp
@@ -568,7 +568,7 @@
                                   MemoryInst, Result);
     Matcher.IgnoreProfitability = true;
     bool Success = Matcher.MatchAddr(Address, 0);
-    Success = Success; assert(Success && "Couldn't select *anything*?");
+    (void)Success; assert(Success && "Couldn't select *anything*?");
 
     // If the match didn't cover I, then it won't be shared by it.
     if (std::find(MatchedAddrModeInsts.begin(), MatchedAddrModeInsts.end(),