Revert commit r207302 since build failures

have been reported.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207303 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Utils/SimplifyInstructions.cpp

@@ -76,15 +76,7 @@ namespace {
                 ++NumSimplified;
                 Changed = true;
               }
-            bool res = RecursivelyDeleteTriviallyDeadInstructions(I, TLI);
-            if (res)  {
-              // RecursivelyDeleteTriviallyDeadInstruction can remove
-              // more than one instruction, so simply incrementing the
-              // iterator does not work. When instructions get deleted
-              // re-iterate instead.
-              BI = BB->begin(); BE = BB->end();
-              Changed |= res;
-            }
+            Changed |= RecursivelyDeleteTriviallyDeadInstructions(I, TLI);
           }
 
         // Place the list of instructions to simplify on the next loop iteration