From 48de2a917dca79cf70d087b08949813a1859c2d8 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Thu, 2 Jun 2016 00:04:26 +0000
Subject: [PATCH] Make MachineCopyPropagation preserve CFG

This doesn't touch it as far as I can tell.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271445 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineCopyPropagation.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/CodeGen/MachineCopyPropagation.cpp b/lib/CodeGen/MachineCopyPropagation.cpp
index 7f2e7784026..8fdf39d54bd 100644
--- a/lib/CodeGen/MachineCopyPropagation.cpp
+++ b/lib/CodeGen/MachineCopyPropagation.cpp
@@ -47,6 +47,11 @@ namespace {
       initializeMachineCopyPropagationPass(*PassRegistry::getPassRegistry());
     }
 
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.setPreservesCFG();
+      MachineFunctionPass::getAnalysisUsage(AU);
+    }
+
     bool runOnMachineFunction(MachineFunction &MF) override;
 
     MachineFunctionProperties getRequiredProperties() const override {