From b24e29e8a8ca0ce246634ddc1b7978ddb53cba17 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Tue, 21 Jun 2016 23:01:17 +0000
Subject: [PATCH] Make DeadMachineInstructionElim preserve CFG

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273330 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/DeadMachineInstructionElim.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/CodeGen/DeadMachineInstructionElim.cpp b/lib/CodeGen/DeadMachineInstructionElim.cpp
index ae58b5bb0e7..0b8dc7a86ad 100644
--- a/lib/CodeGen/DeadMachineInstructionElim.cpp
+++ b/lib/CodeGen/DeadMachineInstructionElim.cpp
@@ -42,6 +42,11 @@ namespace {
      initializeDeadMachineInstructionElimPass(*PassRegistry::getPassRegistry());
     }
 
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.setPreservesCFG();
+      MachineFunctionPass::getAnalysisUsage(AU);
+    }
+
   private:
     bool isDead(const MachineInstr *MI) const;
   };
-- 
2.50.1