[PATCH] D9376: llvm.noalias - handling of dead intrinsics

[Hal Finkel via llvm-commits]

hfinkel added inline comments.

================
Comment at: lib/Analysis/InstructionSimplify.cpp:3951-3952
@@ +3950,4 @@
+  // forwarding the undef).
+  if (IID == Intrinsic::noalias && isa<UndefValue>(*ArgBegin))
+    return *ArgBegin;
+
----------------
majnemer wrote:
> Hmm.  What about NULL in address space 0?
Good point. We can drop them then too (nothing aliases with as-0 null). I'll update.


http://reviews.llvm.org/D9376