Fixed spelling.

llvm-svn: 8687
diff --git a/llvm/lib/Target/Sparc/SparcRegClassInfo.cpp b/llvm/lib/Target/Sparc/SparcRegClassInfo.cpp
index babc6fb..8f51264 100644
--- a/llvm/lib/Target/Sparc/SparcRegClassInfo.cpp
+++ b/llvm/lib/Target/Sparc/SparcRegClassInfo.cpp
@@ -76,7 +76,7 @@
   }
 
   if (ColorFound) {
-    LR->setColor(c);                  // first color found in preffered order
+    LR->setColor(c);                  // first color found in preferred order
     if (DEBUG_RA) std::cerr << "\n  Colored after first search with col " << c;
   }