diff --git a/src/arch/sparc/intregfile.cc b/src/arch/sparc/intregfile.cc
index 26637ddad..c111172a9 100644
--- a/src/arch/sparc/intregfile.cc
+++ b/src/arch/sparc/intregfile.cc
@@ -51,14 +51,6 @@ string SparcISA::getIntRegName(RegIndex index)
     return intRegName[index];
 }
 
-int IntRegFile::flattenIndex(int reg)
-{
-    int flatIndex = offset[reg >> FrameOffsetBits]
-        | (reg & FrameOffsetMask);
-    DPRINTF(RegisterWindows, "Flattened index %d into %d.\n", reg, flatIndex);
-    return flatIndex;
-}
-
 void IntRegFile::clear()
 {
     int x;
diff --git a/src/arch/sparc/intregfile.hh b/src/arch/sparc/intregfile.hh
index ce9bcadb6..9a086f08a 100644
--- a/src/arch/sparc/intregfile.hh
+++ b/src/arch/sparc/intregfile.hh
@@ -87,8 +87,6 @@ namespace SparcISA
 
       public:
 
-        int flattenIndex(int reg);
-
         void clear();
 
         IntRegFile();