add a new pass to instrument loads and stores for run-time bounds checking

move EmitGEPOffset from InstCombine to Transforms/Utils/Local.h

(a draft of this) patch reviewed by Andrew, thanks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157261 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/Scalar.h

@@ -325,6 +325,14 @@ Pass *createLowerAtomicPass();
 //
 Pass *createCorrelatedValuePropagationPass();
 
+//===----------------------------------------------------------------------===//
+//
+// BoundsChecking - This pass instruments the code to perform run-time bounds
+// checking on loads, stores, and other memory intrinsics.
+// Penalty is the maximum run-time that is acceptable for the user.
+//
+FunctionPass *createBoundsCheckingPass(unsigned Penalty = 5);
+
 //===----------------------------------------------------------------------===//
 //
 // ObjCARCAPElim - ObjC ARC autorelease pool elimination.