1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocPBQP.cpp b/lib/CodeGen/RegAllocPBQP.cpp
index 73479d7..a36eeff 100644
--- a/lib/CodeGen/RegAllocPBQP.cpp
+++ b/lib/CodeGen/RegAllocPBQP.cpp
@@ -667,6 +667,11 @@ bool RegAllocPBQP::runOnMachineFunction(MachineFunction &MF) {
   // Run rewriter
   vrm->rewrite(lis->getSlotIndexes());
 
+  // All machine operands and other references to virtual registers have been
+  // replaced. Remove the virtual registers.
+  vrm->clearAllVirt();
+  mri->clearVirtRegs();
+
   return true;
 }