Subzero: Randomize register assignment.

src/IceRNG.h

Index: src/IceRNG.h
diff --git a/src/IceRNG.h b/src/IceRNG.h
index 423aee00e233110a5aeb783ffcda8ba07661781a..4372b70fab66c24ba28801a7c98d1526e1f25ac8 100644
--- a/src/IceRNG.h
+++ b/src/IceRNG.h
@@ -28,6 +28,19 @@ private:
   uint64_t State;
 };
 
+// This class adds additional random number generator utilities. The
+// reason for the wrapper class is that we want to keep the
+// RandomNumberGenerator interface identical to LLVM's.
+class RandomNumberGeneratorWrapper {

[Jim Stichnoth, 2014/08/14 01:10:29]

Here and above, add the usual boilerplate disabling default copy ctor etc.

[wala, 2014/08/15 03:37:23]

Done.

+public:
+  uint64_t next(uint64_t Max) { return RNG.next(Max); }
+  uint64_t operator()(uint64_t Max) { return RNG.next(Max); }
+  bool getTrueWithProbability(float Probability);
+  RandomNumberGeneratorWrapper(RandomNumberGenerator &RNG) : RNG(RNG) {}
+private:
+  RandomNumberGenerator &RNG;
+};
+
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICERNG_H