X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FAllocationOrder.h;h=aed461a7ed028d2e62c4a5458d4fcaf5f2c48901;hb=1db3d0820f8057dd03ade1585bfa5f2bf53cfe33;hp=a5293f60a07729147446d0eed1691dcf7d98d7f5;hpb=f7999fe1cb2c2bdb0a4080efabb4743719ce45ca;p=oota-llvm.git

diff --git a/lib/CodeGen/AllocationOrder.h b/lib/CodeGen/AllocationOrder.h
index a5293f60a07..aed461a7ed0 100644
--- a/lib/CodeGen/AllocationOrder.h
+++ b/lib/CodeGen/AllocationOrder.h
@@ -39,6 +39,9 @@ public:
                   const VirtRegMap &VRM,
                   const RegisterClassInfo &RegClassInfo);
 
+  /// Get the allocation order without reordered hints.
+  ArrayRef<MCPhysReg> getOrder() const { return Order; }
+
   /// Return the next physical register in the allocation order, or 0.
   /// It is safe to call next() again after it returned 0, it will keep
   /// returning 0 until rewind() is called.
@@ -53,6 +56,18 @@ public:
     return 0;
   }
 
+  /// As next(), but allow duplicates to be returned, and stop before the
+  /// Limit'th register in the RegisterClassInfo allocation order.
+  ///
+  /// This can produce more than Limit registers if there are hints.
+  unsigned nextWithDups(unsigned Limit) {
+    if (Pos < 0)
+      return Hints.end()[Pos++];
+    if (Pos < int(Limit))
+      return Order[Pos++];
+    return 0;
+  }
+
   /// Start over from the beginning.
   void rewind() { Pos = -int(Hints.size()); }