Refactor LegalizeTypes: Erase LegalizeAction and make the type legalizer use

the TargetLowering enum.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132418 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 71 insertions, 96 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
index 935aab0e59..882ad7e639 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -174,24 +174,24 @@ SDValue DAGTypeLegalizer::PromoteIntRes_BITCAST(SDNode *N) {
   default:
     assert(false && "Unknown type action!");
     break;
-  case Legal:
+  case TargetLowering::TypeLegal:
     break;
-  case PromoteInteger:
+  case TargetLowering::TypePromoteInteger:
     if (NOutVT.bitsEq(NInVT))
       // The input promotes to the same size.  Convert the promoted value.
       return DAG.getNode(ISD::BITCAST, dl, NOutVT, GetPromotedInteger(InOp));
     break;
-  case SoftenFloat:
+  case TargetLowering::TypeSoftenFloat:
     // Promote the integer operand by hand.
     return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT, GetSoftenedFloat(InOp));
-  case ExpandInteger:
-  case ExpandFloat:
+  case TargetLowering::TypeExpandInteger:
+  case TargetLowering::TypeExpandFloat:
     break;
-  case ScalarizeVector:
+  case TargetLowering::TypeScalarizeVector:
     // Convert the element to an integer and promote it by hand.
     return DAG.getNode(ISD::ANY_EXTEND, dl, NOutVT,
                        BitConvertToInteger(GetScalarizedVector(InOp)));
-  case SplitVector: {
+  case TargetLowering::TypeSplitVector: {
     // For example, i32 = BITCAST v2i16 on alpha.  Convert the split
     // pieces of the input into integers and reassemble in the final type.
     SDValue Lo, Hi;
@@ -208,7 +208,7 @@ SDValue DAGTypeLegalizer::PromoteIntRes_BITCAST(SDNode *N) {
                        JoinIntegers(Lo, Hi));
     return DAG.getNode(ISD::BITCAST, dl, NOutVT, InOp);
   }
-  case WidenVector:
+  case TargetLowering::TypeWidenVector:
     if (OutVT.bitsEq(NInVT))
       // The input is widened to the same size.  Convert to the widened value.
       return DAG.getNode(ISD::BITCAST, dl, OutVT, GetWidenedVector(InOp));
@@ -342,7 +342,8 @@ SDValue DAGTypeLegalizer::PromoteIntRes_INT_EXTEND(SDNode *N) {
   EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0));
   DebugLoc dl = N->getDebugLoc();
 
-  if (getTypeAction(N->getOperand(0).getValueType()) == PromoteInteger) {
+  if (getTypeAction(N->getOperand(0).getValueType())
+      == TargetLowering::TypePromoteInteger) {
     SDValue Res = GetPromotedInteger(N->getOperand(0));
     assert(Res.getValueType().bitsLE(NVT) && "Extension doesn't make sense!");
 
@@ -507,11 +508,11 @@ SDValue DAGTypeLegalizer::PromoteIntRes_TRUNCATE(SDNode *N) {
 
   switch (getTypeAction(N->getOperand(0).getValueType())) {
   default: llvm_unreachable("Unknown type action!");
-  case Legal:
-  case ExpandInteger:
+  case TargetLowering::TypeLegal:
+  case TargetLowering::TypeExpandInteger:
     Res = N->getOperand(0);
     break;
-  case PromoteInteger:
+  case TargetLowering::TypePromoteInteger:
     Res = GetPromotedInteger(N->getOperand(0));
     break;
   }
@@ -1513,7 +1514,8 @@ void DAGTypeLegalizer::ExpandIntRes_ANY_EXTEND(SDNode *N,
   } else {
     // For example, extension of an i48 to an i64.  The operand type necessarily
     // promotes to the result type, so will end up being expanded too.
-    assert(getTypeAction(Op.getValueType()) == PromoteInteger &&
+    assert(getTypeAction(Op.getValueType()) ==
+           TargetLowering::TypePromoteInteger &&
            "Only know how to promote this result!");
     SDValue Res = GetPromotedInteger(Op);
     assert(Res.getValueType() == N->getValueType(0) &&
@@ -2030,7 +2032,8 @@ void DAGTypeLegalizer::ExpandIntRes_SIGN_EXTEND(SDNode *N,
   } else {
     // For example, extension of an i48 to an i64.  The operand type necessarily
     // promotes to the result type, so will end up being expanded too.
-    assert(getTypeAction(Op.getValueType()) == PromoteInteger &&
+    assert(getTypeAction(Op.getValueType()) ==
+           TargetLowering::TypePromoteInteger &&
            "Only know how to promote this result!");
     SDValue Res = GetPromotedInteger(Op);
     assert(Res.getValueType() == N->getValueType(0) &&
@@ -2178,7 +2181,8 @@ void DAGTypeLegalizer::ExpandIntRes_ZERO_EXTEND(SDNode *N,
   } else {
     // For example, extension of an i48 to an i64.  The operand type necessarily
     // promotes to the result type, so will end up being expanded too.
-    assert(getTypeAction(Op.getValueType()) == PromoteInteger &&
+    assert(getTypeAction(Op.getValueType()) ==
+           TargetLowering::TypePromoteInteger &&
            "Only know how to promote this result!");
     SDValue Res = GetPromotedInteger(Op);
     assert(Res.getValueType() == N->getValueType(0) &&
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
index cedda7e707..ba658b0220 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
@@ -224,38 +224,38 @@ bool DAGTypeLegalizer::run() {
       switch (getTypeAction(ResultVT)) {
       default:
         assert(false && "Unknown action!");
-      case Legal:
+      case TargetLowering::TypeLegal:
         break;
       // The following calls must take care of *all* of the node's results,
       // not just the illegal result they were passed (this includes results
       // with a legal type).  Results can be remapped using ReplaceValueWith,
       // or their promoted/expanded/etc values registered in PromotedIntegers,
       // ExpandedIntegers etc.
-      case PromoteInteger:
+      case TargetLowering::TypePromoteInteger:
         PromoteIntegerResult(N, i);
         Changed = true;
         goto NodeDone;
-      case ExpandInteger:
+      case TargetLowering::TypeExpandInteger:
         ExpandIntegerResult(N, i);
         Changed = true;
         goto NodeDone;
-      case SoftenFloat:
+      case TargetLowering::TypeSoftenFloat:
         SoftenFloatResult(N, i);
         Changed = true;
         goto NodeDone;
-      case ExpandFloat:
+      case TargetLowering::TypeExpandFloat:
         ExpandFloatResult(N, i);
         Changed = true;
         goto NodeDone;
-      case ScalarizeVector:
+      case TargetLowering::TypeScalarizeVector:
         ScalarizeVectorResult(N, i);
         Changed = true;
         goto NodeDone;
-      case SplitVector:
+      case TargetLowering::TypeSplitVector:
         SplitVectorResult(N, i);
         Changed = true;
         goto NodeDone;
-      case WidenVector:
+      case TargetLowering::TypeWidenVector:
         WidenVectorResult(N, i);
         Changed = true;
         goto NodeDone;
@@ -277,36 +277,36 @@ ScanOperands:
       switch (getTypeAction(OpVT)) {
       default:
         assert(false && "Unknown action!");
-      case Legal:
+      case TargetLowering::TypeLegal:
         continue;
       // The following calls must either replace all of the node's results
       // using ReplaceValueWith, and return "false"; or update the node's
       // operands in place, and return "true".
-      case PromoteInteger:
+      case TargetLowering::TypePromoteInteger:
         NeedsReanalyzing = PromoteIntegerOperand(N, i);
         Changed = true;
         break;
-      case ExpandInteger:
+      case TargetLowering::TypeExpandInteger:
         NeedsReanalyzing = ExpandIntegerOperand(N, i);
         Changed = true;
         break;
-      case SoftenFloat:
+      case TargetLowering::TypeSoftenFloat:
         NeedsReanalyzing = SoftenFloatOperand(N, i);
         Changed = true;
         break;
-      case ExpandFloat:
+      case TargetLowering::TypeExpandFloat:
         NeedsReanalyzing = ExpandFloatOperand(N, i);
         Changed = true;
         break;
-      case ScalarizeVector:
+      case TargetLowering::TypeScalarizeVector:
         NeedsReanalyzing = ScalarizeVectorOperand(N, i);
         Changed = true;
         break;
-      case SplitVector:
+      case TargetLowering::TypeSplitVector:
         NeedsReanalyzing = SplitVectorOperand(N, i);
         Changed = true;
         break;
-      case WidenVector:
+      case TargetLowering::TypeWidenVector:
         NeedsReanalyzing = WidenVectorOperand(N, i);
         Changed = true;
         break;
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
index b2daf8519b..3713f94bea 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h
@@ -57,16 +57,6 @@ public:
     // 1+ - This is a node which has this many unprocessed operands.
   };
 private:
-  enum LegalizeAction {
-    Legal,           // The target natively supports this type.
-    PromoteInteger,  // Replace this integer type with a larger one.
-    ExpandInteger,   // Split this integer type into two of half the size.
-    SoftenFloat,     // Convert this float type to a same size integer type.
-    ExpandFloat,     // Split this float type into two of half the size.
-    ScalarizeVector, // Replace this one-element vector with its element type.
-    SplitVector,     // Split this vector type into two of half the size.
-    WidenVector      // This vector type should be widened into a larger vector.
-  };
 
   /// ValueTypeActions - This is a bitvector that contains two bits for each
   /// simple value type, where the two bits correspond to the LegalizeAction
@@ -74,27 +64,8 @@ private:
   TargetLowering::ValueTypeActionImpl ValueTypeActions;
 
   /// getTypeAction - Return how we should legalize values of this type.
-  LegalizeAction getTypeAction(EVT VT) const {
-    switch (TLI.getTypeAction(*DAG.getContext(), VT)) {
-    default:
-      assert(false && "Unknown legalize action!");
-    case TargetLowering::Legal:
-      return Legal;
-    case TargetLowering::TypePromoteInteger:
-      return PromoteInteger;
-    case TargetLowering::TypeExpandInteger:
-      return ExpandInteger;
-    case TargetLowering::TypeExpandFloat:
-      return ExpandFloat;
-    case TargetLowering::TypeSoftenFloat:
-        return SoftenFloat;
-    case TargetLowering::TypeWidenVector:
-      return WidenVector;
-    case TargetLowering::TypeScalarizeVector:
-      return ScalarizeVector;
-    case TargetLowering::TypeSplitVector:
-       return SplitVector;
-    }
+  TargetLowering::LegalizeTypeAction getTypeAction(EVT VT) const {
+    return TLI.getTypeAction(*DAG.getContext(), VT);
   }
 
   /// isTypeLegal - Return true if this type is legal on this target.
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
index a75ae87f3c..85ea6b6620 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp
@@ -43,36 +43,36 @@ void DAGTypeLegalizer::ExpandRes_BITCAST(SDNode *N, SDValue &Lo, SDValue &Hi) {
   switch (getTypeAction(InVT)) {
     default:
       assert(false && "Unknown type action!");
-    case Legal:
-    case PromoteInteger:
+    case TargetLowering::TypeLegal:
+    case TargetLowering::TypePromoteInteger:
       break;
-    case SoftenFloat:
+    case TargetLowering::TypeSoftenFloat:
       // Convert the integer operand instead.
       SplitInteger(GetSoftenedFloat(InOp), Lo, Hi);
       Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo);
       Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi);
       return;
-    case ExpandInteger:
-    case ExpandFloat:
+    case TargetLowering::TypeExpandInteger:
+    case TargetLowering::TypeExpandFloat:
       // Convert the expanded pieces of the input.
       GetExpandedOp(InOp, Lo, Hi);
       Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo);
       Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi);
       return;
-    case SplitVector:
+    case TargetLowering::TypeSplitVector:
       GetSplitVector(InOp, Lo, Hi);
       if (TLI.isBigEndian())
         std::swap(Lo, Hi);
       Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo);
       Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi);
       return;
-    case ScalarizeVector:
+    case TargetLowering::TypeScalarizeVector:
       // Convert the element instead.
       SplitInteger(BitConvertToInteger(GetScalarizedVector(InOp)), Lo, Hi);
       Lo = DAG.getNode(ISD::BITCAST, dl, NOutVT, Lo);
       Hi = DAG.getNode(ISD::BITCAST, dl, NOutVT, Hi);
       return;
-    case WidenVector: {
+    case TargetLowering::TypeWidenVector: {
       assert(!(InVT.getVectorNumElements() & 1) && "Unsupported BITCAST");
       InOp = GetWidenedVector(InOp);
       EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(),
diff --git a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 0b4dd357c3..e27017d776 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -526,13 +526,13 @@ void DAGTypeLegalizer::SplitVecRes_BITCAST(SDNode *N, SDValue &Lo,
   switch (getTypeAction(InVT)) {
   default:
     assert(false && "Unknown type action!");
-  case Legal:
-  case PromoteInteger:
-  case SoftenFloat:
-  case ScalarizeVector:
+  case TargetLowering::TypeLegal:
+  case TargetLowering::TypePromoteInteger:
+  case TargetLowering::TypeSoftenFloat:
+  case TargetLowering::TypeScalarizeVector:
     break;
-  case ExpandInteger:
-  case ExpandFloat:
+  case TargetLowering::TypeExpandInteger:
+  case TargetLowering::TypeExpandFloat:
     // A scalar to vector conversion, where the scalar needs expansion.
     // If the vector is being split in two then we can just convert the
     // expanded pieces.
@@ -545,7 +545,7 @@ void DAGTypeLegalizer::SplitVecRes_BITCAST(SDNode *N, SDValue &Lo,
       return;
     }
     break;
-  case SplitVector:
+  case TargetLowering::TypeSplitVector:
     // If the input is a vector that needs to be split, convert each split
     // piece of the input now.
     GetSplitVector(InOp, Lo, Hi);
@@ -774,7 +774,7 @@ void DAGTypeLegalizer::SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo,
   EVT InVT = N->getOperand(0).getValueType();
   switch (getTypeAction(InVT)) {
   default: llvm_unreachable("Unexpected type action!");
-  case Legal: {
+  case TargetLowering::TypeLegal: {
     EVT InNVT = EVT::getVectorVT(*DAG.getContext(), InVT.getVectorElementType(),
                                  LoVT.getVectorNumElements());
     Lo = DAG.getNode(ISD::EXTRACT_SUBVECTOR, dl, InNVT, N->getOperand(0),
@@ -783,10 +783,10 @@ void DAGTypeLegalizer::SplitVecRes_UnaryOp(SDNode *N, SDValue &Lo,
                      DAG.getIntPtrConstant(InNVT.getVectorNumElements()));
     break;
   }
-  case SplitVector:
+  case TargetLowering::TypeSplitVector:
     GetSplitVector(N->getOperand(0), Lo, Hi);
     break;
-  case WidenVector: {
+  case TargetLowering::TypeWidenVector: {
     // If the result needs to be split and the input needs to be widened,
     // the two types must have different lengths. Use the widened result
     // and extract from it to do the split.
@@ -1439,7 +1439,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_Convert(SDNode *N) {
   unsigned Opcode = N->getOpcode();
   unsigned InVTNumElts = InVT.getVectorNumElements();
 
-  if (getTypeAction(InVT) == WidenVector) {
+  if (getTypeAction(InVT) == TargetLowering::TypeWidenVector) {
     InOp = GetWidenedVector(N->getOperand(0));
     InVT = InOp.getValueType();
     InVTNumElts = InVT.getVectorNumElements();
@@ -1515,7 +1515,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_Shift(SDNode *N) {
   SDValue ShOp = N->getOperand(1);
 
   EVT ShVT = ShOp.getValueType();
-  if (getTypeAction(ShVT) == WidenVector) {
+  if (getTypeAction(ShVT) == TargetLowering::TypeWidenVector) {
     ShOp = GetWidenedVector(ShOp);
     ShVT = ShOp.getValueType();
   }
@@ -1557,9 +1557,9 @@ SDValue DAGTypeLegalizer::WidenVecRes_BITCAST(SDNode *N) {
   default:
     assert(false && "Unknown type action!");
     break;
-  case Legal:
+  case TargetLowering::TypeLegal:
     break;
-  case PromoteInteger:
+  case TargetLowering::TypePromoteInteger:
     // If the InOp is promoted to the same size, convert it.  Otherwise,
     // fall out of the switch and widen the promoted input.
     InOp = GetPromotedInteger(InOp);
@@ -1567,13 +1567,13 @@ SDValue DAGTypeLegalizer::WidenVecRes_BITCAST(SDNode *N) {
     if (WidenVT.bitsEq(InVT))
       return DAG.getNode(ISD::BITCAST, dl, WidenVT, InOp);
     break;
-  case SoftenFloat:
-  case ExpandInteger:
-  case ExpandFloat:
-  case ScalarizeVector:
-  case SplitVector:
+  case TargetLowering::TypeSoftenFloat:
+  case TargetLowering::TypeExpandInteger:
+  case TargetLowering::TypeExpandFloat:
+  case TargetLowering::TypeScalarizeVector:
+  case TargetLowering::TypeSplitVector:
     break;
-  case WidenVector:
+  case TargetLowering::TypeWidenVector:
     // If the InOp is widened to the same size, convert it.  Otherwise, fall
     // out of the switch and widen the widened input.
     InOp = GetWidenedVector(InOp);
@@ -1653,7 +1653,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_CONCAT_VECTORS(SDNode *N) {
   unsigned NumOperands = N->getNumOperands();
 
   bool InputWidened = false; // Indicates we need to widen the input.
-  if (getTypeAction(InVT) != WidenVector) {
+  if (getTypeAction(InVT) != TargetLowering::TypeWidenVector) {
     if (WidenVT.getVectorNumElements() % InVT.getVectorNumElements() == 0) {
       // Add undef vectors to widen to correct length.
       unsigned NumConcat = WidenVT.getVectorNumElements() /
@@ -1732,7 +1732,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_CONVERT_RNDSAT(SDNode *N) {
   ISD::CvtCode CvtCode = cast<CvtRndSatSDNode>(N)->getCvtCode();
 
   unsigned InVTNumElts = InVT.getVectorNumElements();
-  if (getTypeAction(InVT) == WidenVector) {
+  if (getTypeAction(InVT) == TargetLowering::TypeWidenVector) {
     InOp = GetWidenedVector(InOp);
     InVT = InOp.getValueType();
     InVTNumElts = InVT.getVectorNumElements();
@@ -1800,7 +1800,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_EXTRACT_SUBVECTOR(SDNode *N) {
   SDValue  Idx  = N->getOperand(1);
   DebugLoc dl = N->getDebugLoc();
 
-  if (getTypeAction(InOp.getValueType()) == WidenVector)
+  if (getTypeAction(InOp.getValueType()) == TargetLowering::TypeWidenVector)
     InOp = GetWidenedVector(InOp);
 
   EVT InVT = InOp.getValueType();
@@ -1882,7 +1882,7 @@ SDValue DAGTypeLegalizer::WidenVecRes_SELECT(SDNode *N) {
     EVT CondEltVT = CondVT.getVectorElementType();
     EVT CondWidenVT =  EVT::getVectorVT(*DAG.getContext(),
                                         CondEltVT, WidenNumElts);
-    if (getTypeAction(CondVT) == WidenVector)
+    if (getTypeAction(CondVT) == TargetLowering::TypeWidenVector)
       Cond1 = GetWidenedVector(Cond1);
 
     if (Cond1.getValueType() != CondWidenVT)
@@ -2026,7 +2026,7 @@ SDValue DAGTypeLegalizer::WidenVecOp_Convert(SDNode *N) {
   DebugLoc dl = N->getDebugLoc();
   unsigned NumElts = VT.getVectorNumElements();
   SDValue InOp = N->getOperand(0);
-  if (getTypeAction(InOp.getValueType()) == WidenVector)
+  if (getTypeAction(InOp.getValueType()) == TargetLowering::TypeWidenVector)
     InOp = GetWidenedVector(InOp);
   EVT InVT = InOp.getValueType();
   EVT InEltVT = InVT.getVectorElementType();
@@ -2081,7 +2081,7 @@ SDValue DAGTypeLegalizer::WidenVecOp_CONCAT_VECTORS(SDNode *N) {
   unsigned NumOperands = N->getNumOperands();
   for (unsigned i=0; i < NumOperands; ++i) {
     SDValue InOp = N->getOperand(i);
-    if (getTypeAction(InOp.getValueType()) == WidenVector)
+    if (getTypeAction(InOp.getValueType()) == TargetLowering::TypeWidenVector)
       InOp = GetWidenedVector(InOp);
     for (unsigned j=0; j < NumInElts; ++j)
       Ops[Idx++] = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, InOp,