Fix for custom InstComb in llvm7

Change-Id: If3f1148de1dd6c6854ebc673311c40ba2fdd1b7a

Author: lwesiers

IGC/Compiler/Optimizer/IGCInstCombiner/7.0/InstructionCombining.cpp

@@ -3340,8 +3340,8 @@ namespace IGC {
         AU.addRequired<AssumptionCacheTracker>();
         AU.addRequired<TargetLibraryInfoWrapperPass>();
         AU.addRequired<DominatorTreeWrapperPass>();
+        AU.addRequired<OptimizationRemarkEmitterWrapperPass>();
         AU.addPreserved<DominatorTreeWrapperPass>();
-        AU.addPreserved<OptimizationRemarkEmitterWrapperPass>();
         AU.addPreserved<AAResultsWrapperPass>();
         AU.addPreserved<BasicAAWrapperPass>();
         AU.addPreserved<GlobalsAAWrapperPass>();