[PATCH] Dereferenceable, dereferenceable_or_null metadata for loads

[Sanjoy Das]

Minor comment inline for post-commit review.


================
Comment at: lib/Analysis/ValueTracking.cpp:2880
@@ +2879,3 @@
+      DerefBytes = CI->getLimitedValue();
+    }
+    if (!DerefBytes.getBoolValue()) {
----------------
In both the places, instead of doing

```
MDNode *MD = ...
if (MD)
```

you can do

```
if (MDNode *MD = ...)
```

http://reviews.llvm.org/D9365

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