1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index ba50f4e..03abff3 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -208,6 +208,11 @@ namespace llvm {
     /// @brief returns the register allocation preference.
     unsigned getRegAllocPref(unsigned virtReg);
 
+    /// @brief returns true if VirtReg is assigned to its preferred physreg.
+    bool hasPreferredPhys(unsigned VirtReg) {
+      return getPhys(VirtReg) == getRegAllocPref(VirtReg);
+    }
+
     /// @brief records virtReg is a split live interval from SReg.
     void setIsSplitFromReg(unsigned virtReg, unsigned SReg) {
       Virt2SplitMap[virtReg] = SReg;