Stop using deprecated interface.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20679 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/IA64/IA64ISelPattern.cpp b/lib/Target/IA64/IA64ISelPattern.cpp
index b6c0fca..bbe1aba 100644
--- a/lib/Target/IA64/IA64ISelPattern.cpp
+++ b/lib/Target/IA64/IA64ISelPattern.cpp
@@ -162,7 +162,7 @@
   unsigned used_FPArgs=0; // how many FP args have been used so far?
   
   int count = 0;
-  for (Function::aiterator I = F.abegin(), E = F.aend(); I != E; ++I)
+  for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I)
     {
       SDOperand newroot, argt;
       if(count < 8) { // need to fix this logic? maybe.