[llvm] r271445 - Make MachineCopyPropagation preserve CFG

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Wed Jun  1 19:04:26 2016
New Revision: 271445

URL: http://llvm.org/viewvc/llvm-project?rev=271445&view=rev
Log:
Make MachineCopyPropagation preserve CFG

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

Modified:
    llvm/trunk/lib/CodeGen/MachineCopyPropagation.cpp

Modified: llvm/trunk/lib/CodeGen/MachineCopyPropagation.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineCopyPropagation.cpp?rev=271445&r1=271444&r2=271445&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineCopyPropagation.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineCopyPropagation.cpp Wed Jun  1 19:04:26 2016
@@ -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 {