Subzero: Auto-awesome iterators.

Use C++11 'auto' where practical to make iteration more concise.
Use C++11 range-based for loops where possible.

BUG= none
R=jfb@chromium.org, kschimpf@google.com

Review URL: https://codereview.chromium.org/619893002
diff --git a/src/IceIntrinsics.h b/src/IceIntrinsics.h
index bd0f118..7931539 100644
--- a/src/IceIntrinsics.h
+++ b/src/IceIntrinsics.h
@@ -157,7 +157,7 @@
 private:
   // TODO(jvoung): May want to switch to something like LLVM's StringMap.
   typedef std::map<IceString, FullIntrinsicInfo> IntrinsicMap;
-  IntrinsicMap map;
+  IntrinsicMap Map;
 
   Intrinsics(const Intrinsics &) LLVM_DELETED_FUNCTION;
   Intrinsics &operator=(const Intrinsics &) LLVM_DELETED_FUNCTION;