RegisterPressure: constify getRegSetPressureAtPos()

llvm-svn: 247616

1 files changed, 3 insertions, 1 deletions

diff --git a/llvm/include/llvm/CodeGen/RegisterPressure.h b/llvm/include/llvm/CodeGen/RegisterPressure.h
index 9d8843d1d74..c64087c5965 100644
--- a/llvm/include/llvm/CodeGen/RegisterPressure.h
+++ b/llvm/include/llvm/CodeGen/RegisterPressure.h
@@ -333,7 +333,9 @@ public:
 
   /// Get the register set pressure at the current position, which may be less
   /// than the pressure across the traversed region.
-  std::vector<unsigned> &getRegSetPressureAtPos() { return CurrSetPressure; }
+  const std::vector<unsigned> &getRegSetPressureAtPos() const {
+    return CurrSetPressure;
+  }
 
   void discoverLiveOut(unsigned Reg);
   void discoverLiveIn(unsigned Reg);