[DAGCombiner] simplify code; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350844 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 3d5c30ef8929a10b27ee830d20199241b98c781f..75f8652ff17bfc09945edf963fdc790e91c594c3 100644 (file)
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -16913,9 +16913,9 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode* N) {
   //    Vi if possible
   // Only operand 0 is checked as 'concat' assumes all inputs of the same
   // type.
-  if (V->getOpcode() == ISD::CONCAT_VECTORS &&
+  if (V.getOpcode() == ISD::CONCAT_VECTORS &&
       isa<ConstantSDNode>(N->getOperand(1)) &&
-      V->getOperand(0).getValueType() == NVT) {
+      V.getOperand(0).getValueType() == NVT) {
     unsigned Idx = N->getConstantOperandVal(1);
     unsigned NumElems = NVT.getVectorNumElements();
     assert((Idx % NumElems) == 0 &&
@@ -16926,9 +16926,9 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode* N) {
   V = peekThroughBitcasts(V);
 
   // If the input is a build vector. Try to make a smaller build vector.
-  if (V->getOpcode() == ISD::BUILD_VECTOR) {
+  if (V.getOpcode() == ISD::BUILD_VECTOR) {
     if (auto *Idx = dyn_cast<ConstantSDNode>(N->getOperand(1))) {
-      EVT InVT = V->getValueType(0);
+      EVT InVT = V.getValueType();
       unsigned ExtractSize = NVT.getSizeInBits();
       unsigned EltSize = InVT.getScalarSizeInBits();
       // Only do this if we won't split any elements.
@@ -16961,16 +16961,16 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode* N) {
     }
   }
 
-  if (V->getOpcode() == ISD::INSERT_SUBVECTOR) {
+  if (V.getOpcode() == ISD::INSERT_SUBVECTOR) {
     // Handle only simple case where vector being inserted and vector
     // being extracted are of same size.
-    EVT SmallVT = V->getOperand(1).getValueType();
+    EVT SmallVT = V.getOperand(1).getValueType();
     if (!NVT.bitsEq(SmallVT))
       return SDValue();
 
     // Only handle cases where both indexes are constants.
-    ConstantSDNode *ExtIdx = dyn_cast<ConstantSDNode>(N->getOperand(1));
-    ConstantSDNode *InsIdx = dyn_cast<ConstantSDNode>(V->getOperand(2));
+    auto *ExtIdx = dyn_cast<ConstantSDNode>(N->getOperand(1));
+    auto *InsIdx = dyn_cast<ConstantSDNode>(V.getOperand(2));
 
     if (InsIdx && ExtIdx) {
       // Combine:
@@ -16980,11 +16980,11 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode* N) {
       //    otherwise => (extract_subvec V1, ExtIdx)
       if (InsIdx->getZExtValue() * SmallVT.getScalarSizeInBits() ==
           ExtIdx->getZExtValue() * NVT.getScalarSizeInBits())
-        return DAG.getBitcast(NVT, V->getOperand(1));
+        return DAG.getBitcast(NVT, V.getOperand(1));
       return DAG.getNode(
           ISD::EXTRACT_SUBVECTOR, SDLoc(N), NVT,
-          DAG.getBitcast(N->getOperand(0).getValueType(), V->getOperand(0)),
-          N->getOperand(1));
+          DAG.getBitcast(N->getOperand(0).getValueType(), V.getOperand(0)),
+                         N->getOperand(1));
     }
   }