Fix a build warning of unhandled enum in switch

Summary: LLVM adds a new value FMRB_DoesNotReadMemory in the enumeration.

Reviewers: andrew.w.kaylor, chrisj, zinob, grosser, jdoerfert

Subscribers: Meinersbur, pollydev

Differential Revision: http://reviews.llvm.org/D22109

llvm-svn: 275085

polly/lib/Analysis/ScopBuilder.cpp

@@ -311,6 +311,8 @@ bool ScopBuilder::buildAccessCallInst(MemAccInst Inst, Loop *L) {
     llvm_unreachable("Unknown mod ref behaviour cannot be represented.");
   case llvm::FMRB_DoesNotAccessMemory:
     return true;
+  case llvm::FMRB_DoesNotReadMemory:
+    return false;
   case llvm::FMRB_OnlyReadsMemory:
     GlobalReads.push_back(CI);
     return true;

polly/lib/Analysis/ScopDetection.cpp

@@ -536,6 +536,8 @@ bool ScopDetection::isValidCallInst(CallInst &CI,
 
       Context.AST.add(&CI);
       return true;
+    case FMRB_DoesNotReadMemory:
+      return false;
     }
   }