Begin adding static dependence information to passes, which will allow us to
perform initialization without static constructors AND without explicit initialization
by the client.  For the moment, passes are required to initialize both their
(potential) dependencies and any passes they preserve.  I hope to be able to relax
the latter requirement in the future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116334 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp
index fce7a64..66f8e23 100644
--- a/lib/CodeGen/LiveVariables.cpp
+++ b/lib/CodeGen/LiveVariables.cpp
@@ -42,7 +42,10 @@
 using namespace llvm;
 
 char LiveVariables::ID = 0;
-INITIALIZE_PASS(LiveVariables, "livevars",
+INITIALIZE_PASS_BEGIN(LiveVariables, "livevars",
+                "Live Variable Analysis", false, false)
+INITIALIZE_PASS_DEPENDENCY(UnreachableMachineBlockElim)
+INITIALIZE_PASS_END(LiveVariables, "livevars",
                 "Live Variable Analysis", false, false)