[SelectionDAG] Remove ifs on getTypeAction being TypeWidenVector from some of the...

We should only be in the handler if the tyep action is TypeWidenVector. There's no reason to try to do anything else.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@321635 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index ce1c01b..af99572 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -3374,11 +3374,9 @@ SDValue DAGTypeLegalizer::WidenVecOp_EXTEND(SDNode *N) {
   EVT VT = N->getValueType(0);
 
   SDValue InOp = N->getOperand(0);
-  // If some legalization strategy other than widening is used on the operand,
-  // we can't safely assume that just extending the low lanes is the correct
-  // transformation.
-  if (getTypeAction(InOp.getValueType()) != TargetLowering::TypeWidenVector)
-    return WidenVecOp_Convert(N);
+  assert(getTypeAction(InOp.getValueType()) ==
+             TargetLowering::TypeWidenVector &&
+         "Unexpected type action");
   InOp = GetWidenedVector(InOp);
   assert(VT.getVectorNumElements() <
              InOp.getValueType().getVectorNumElements() &&
@@ -3448,8 +3446,10 @@ SDValue DAGTypeLegalizer::WidenVecOp_Convert(SDNode *N) {
   SDLoc dl(N);
   unsigned NumElts = VT.getVectorNumElements();
   SDValue InOp = N->getOperand(0);
-  if (getTypeAction(InOp.getValueType()) == TargetLowering::TypeWidenVector)
-    InOp = GetWidenedVector(InOp);
+  assert(getTypeAction(InOp.getValueType()) ==
+             TargetLowering::TypeWidenVector &&
+         "Unexpected type action");
+  InOp = GetWidenedVector(InOp);
   EVT InVT = InOp.getValueType();
   EVT InEltVT = InVT.getVectorElementType();
 
@@ -3506,8 +3506,10 @@ 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()) == TargetLowering::TypeWidenVector)
-      InOp = GetWidenedVector(InOp);
+    assert(getTypeAction(InOp.getValueType()) ==
+               TargetLowering::TypeWidenVector &&
+           "Unexpected type action");
+    InOp = GetWidenedVector(InOp);
     for (unsigned j=0; j < NumInElts; ++j)
       Ops[Idx++] = DAG.getNode(
           ISD::EXTRACT_VECTOR_ELT, dl, EltVT, InOp,