Use uint16_t to store register overlaps to reduce static data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152001 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
index b275c63..34ee1f3 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
@@ -447,7 +447,7 @@
       Added = true;
     }
   }
-  for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias)
+  for (const uint16_t *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias)
     if (LiveRegDefs[*Alias] && LiveRegDefs[*Alias] != SU) {
       if (RegAdded.insert(*Alias)) {
         LRegs.push_back(*Alias);
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index 09babe1..1017d36 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -1175,7 +1175,7 @@
                                SmallSet<unsigned, 4> &RegAdded,
                                SmallVector<unsigned, 4> &LRegs,
                                const TargetRegisterInfo *TRI) {
-  for (const unsigned *AliasI = TRI->getOverlaps(Reg); *AliasI; ++AliasI) {
+  for (const uint16_t *AliasI = TRI->getOverlaps(Reg); *AliasI; ++AliasI) {
 
     // Check if Ref is live.
     if (!LiveRegDefs[*AliasI]) continue;