vendor/llvm/llvm-trunk-r242221

1 files changed, 3 insertions, 2 deletions

diff --git a/include/llvm/CodeGen/LiveRegMatrix.h b/include/llvm/CodeGen/LiveRegMatrix.h
index 878b4d9836f21..e169058ca5634 100644
--- a/include/llvm/CodeGen/LiveRegMatrix.h
+++ b/include/llvm/CodeGen/LiveRegMatrix.h
@@ -32,13 +32,11 @@ namespace llvm {
 
 class LiveInterval;
 class LiveIntervalAnalysis;
-class MachineRegisterInfo;
 class TargetRegisterInfo;
 class VirtRegMap;
 
 class LiveRegMatrix : public MachineFunctionPass {
   const TargetRegisterInfo *TRI;
-  MachineRegisterInfo *MRI;
   LiveIntervals *LIS;
   VirtRegMap *VRM;
 
@@ -114,6 +112,9 @@ public:
   /// the assignment and updates VirtRegMap accordingly.
   void unassign(LiveInterval &VirtReg);
 
+  /// Returns true if the given \p PhysReg has any live intervals assigned.
+  bool isPhysRegUsed(unsigned PhysReg) const;
+
   //===--------------------------------------------------------------------===//
   // Low-level interface.
   //===--------------------------------------------------------------------===//