[PATCH] [AArch64] Fix crash with empty/pseudo-only blocks in A53 erratum (835769) workaround

[Renato Golin]

Hi Bradley, Looks good to me, with the comment. Thanks!

================
Comment at: lib/Target/AArch64/AArch64A53Fix835769.cpp:161
@@ -151,1 +160,3 @@
+
+    // No non-pseudo in this block, try the previous block (if there is one).
   }
----------------
would be good if this comment (modified) would go before the while.

http://reviews.llvm.org/D5771