Fix a spelling error


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33556 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.h b/lib/Target/PowerPC/PPCISelLowering.h
index 47fd07d..f7e5b65 100644
--- a/lib/Target/PowerPC/PPCISelLowering.h
+++ b/lib/Target/PowerPC/PPCISelLowering.h
@@ -23,7 +23,7 @@
 namespace llvm {
   namespace PPCISD {
     enum NodeType {
-      // Start the numbering where the builting ops and target ops leave off.
+      // Start the numbering where the builtin ops and target ops leave off.
       FIRST_NUMBER = ISD::BUILTIN_OP_END+PPC::INSTRUCTION_LIST_END,
 
       /// FSEL - Traditional three-operand fsel node.