[PATCH] D20849: Make MachineCopyPropagation preserve CFG

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added reviewers: MatzeB, qcolombet.
arsenm added a subscriber: llvm-commits.

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

http://reviews.llvm.org/D20849

Files:
  lib/CodeGen/MachineCopyPropagation.cpp

Index: lib/CodeGen/MachineCopyPropagation.cpp
===================================================================
--- lib/CodeGen/MachineCopyPropagation.cpp
+++ lib/CodeGen/MachineCopyPropagation.cpp
@@ -47,6 +47,11 @@
       initializeMachineCopyPropagationPass(*PassRegistry::getPassRegistry());
     }
 
+    void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.setPreservesCFG();
+      MachineFunctionPass::getAnalysisUsage(AU);
+    }
+
     bool runOnMachineFunction(MachineFunction &MF) override;
 
     MachineFunctionProperties getRequiredProperties() const override {


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