Various tweaks related to apint codegen.  No functionality
change for non-funky-sized integers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52151 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 81cdf46..fe752de 100644
--- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -250,7 +250,7 @@
   NumRegistersForVT[MVT::isVoid] = 0;
 
   // Find the largest integer register class.
-  unsigned LargestIntReg = MVT::i128;
+  unsigned LargestIntReg = MVT::LAST_INTEGER_VALUETYPE;
   for (; RegClassForVT[LargestIntReg] == 0; --LargestIntReg)
     assert(LargestIntReg != MVT::i1 && "No integer registers defined!");