This preserves critical edge breaking.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43911 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index b8d38dc229ef4b6e15fb145824988c2ae258df3b..defd6ce6fbe7a55c016bfb34655623ed4832bc04 100644 (file)
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -70,6 +70,7 @@ void TwoAddressInstructionPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<LiveVariables>();
   AU.addPreserved<LiveVariables>();
   AU.addPreservedID(PHIEliminationID);
+  AU.addPreservedID(BreakCriticalMachineEdgesID);
   MachineFunctionPass::getAnalysisUsage(AU);
 }