Wrap MVT::ValueType in a struct to get type safety

and better control the abstraction.  Rename the type
to MVT.  To update out-of-tree patches, the main
thing to do is to rename MVT::ValueType to MVT, and
rewrite expressions like MVT::getSizeInBits(VT) in
the form VT.getSizeInBits().  Use VT.getSimpleVT()
to extract a MVT::SimpleValueType for use in switch
statements (you will get an assert failure if VT is
an extended value type - these shouldn't exist after
type legalization).
This results in a small speedup of codegen and no
new testsuite failures (x86-64 linux).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52044 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index 70365e2..d60d2b0 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -191,7 +191,7 @@ void ScheduleDAG::BuildSchedUnits() {
         assert(OpSU && "Node has no SUnit!");
         if (OpSU == SU) continue;           // In the same group.
 
-        MVT::ValueType OpVT = N->getOperand(i).getValueType();
+        MVT OpVT = N->getOperand(i).getValueType();
         assert(OpVT != MVT::Flag && "Flagged nodes should be in same sunit!");
         bool isChain = OpVT == MVT::Other;
 
@@ -433,7 +433,7 @@ void ScheduleDAG::EmitCopyFromReg(SDNode *Node, unsigned ResNo,
         SDOperand Op = Use->getOperand(i);
         if (Op.Val != Node || Op.ResNo != ResNo)
           continue;
-        MVT::ValueType VT = Node->getValueType(Op.ResNo);
+        MVT VT = Node->getValueType(Op.ResNo);
         if (VT != MVT::Other && VT != MVT::Flag)
           Match = false;
       }
@@ -677,7 +677,7 @@ static const TargetRegisterClass *getSubRegisterRegClass(
 static const TargetRegisterClass *getSuperregRegisterClass(
         const TargetRegisterClass *TRC,
         unsigned SubIdx,
-        MVT::ValueType VT) {
+        MVT VT) {
   // Pick the register class of the superegister for this type
   for (TargetRegisterInfo::regclass_iterator I = TRC->superregclasses_begin(),
          E = TRC->superregclasses_end(); I != E; ++I)