[SelectionDAG] Remove some dead code from vector scalaring

Summary:
Currently ScalarizeVecRes_SETCC checks for the result type being a vector and jumps to ScalarizeVecRes_VSETCC. But if we're scalarizing a vector result, aren't we guaranteed to be looking at a vector type?

This patch deletes the current ScalarizeVecRes_SETCC and renames  ScalarizeVecRes_VSETCC to ScalarizeVecRes_SETCC.

Reviewers: RKSimon, arsenm, eladcohen, zvi

Reviewed By: RKSimon

Subscribers: wdng, llvm-commits

Differential Revision: https://reviews.llvm.org/D40452

llvm-svn: 318982

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
index 6cfd77f..a388e0d 100644 (file)
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -380,21 +380,6 @@ SDValue DAGTypeLegalizer::ScalarizeVecRes_SELECT_CC(SDNode *N) {
                      N->getOperand(4));
 }
 
-SDValue DAGTypeLegalizer::ScalarizeVecRes_SETCC(SDNode *N) {
-  assert(N->getValueType(0).isVector() ==
-         N->getOperand(0).getValueType().isVector() &&
-         "Scalar/Vector type mismatch");
-
-  if (N->getValueType(0).isVector()) return ScalarizeVecRes_VSETCC(N);
-
-  SDValue LHS = GetScalarizedVector(N->getOperand(0));
-  SDValue RHS = GetScalarizedVector(N->getOperand(1));
-  SDLoc DL(N);
-
-  // Turn it into a scalar SETCC.
-  return DAG.getNode(ISD::SETCC, DL, MVT::i1, LHS, RHS, N->getOperand(2));
-}
-
 SDValue DAGTypeLegalizer::ScalarizeVecRes_UNDEF(SDNode *N) {
   return DAG.getUNDEF(N->getValueType(0).getVectorElementType());
 }
@@ -408,7 +393,7 @@ SDValue DAGTypeLegalizer::ScalarizeVecRes_VECTOR_SHUFFLE(SDNode *N) {
   return GetScalarizedVector(N->getOperand(Op));
 }
 
-SDValue DAGTypeLegalizer::ScalarizeVecRes_VSETCC(SDNode *N) {
+SDValue DAGTypeLegalizer::ScalarizeVecRes_SETCC(SDNode *N) {
   assert(N->getValueType(0).isVector() &&
          N->getOperand(0).getValueType().isVector() &&
          "Operand types must be vectors");