Remove nested SDValue constructor calls.

Author: paulwalker-arm

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

@@ -7633,7 +7633,7 @@ SDValue DAGCombiner::visitAND(SDNode *N) {
 
     if (SDValue(GN0, 0).hasOneUse() &&
         isConstantSplatVectorMaskForType(N1.getNode(), ScalarVT) &&
-        TLI.isVectorLoadExtDesirable(SDValue(SDValue(N, 0)))) {
+        TLI.isVectorLoadExtDesirable(SDValue(N, 0))) {
       SDValue Ops[] = {GN0->getChain(),   GN0->getPassThru(), GN0->getMask(),
                        GN0->getBasePtr(), GN0->getIndex(),    GN0->getScale()};
 
@@ -15724,7 +15724,7 @@ SDValue DAGCombiner::visitSIGN_EXTEND_INREG(SDNode *N) {
   // fold (sext_inreg (masked_gather x)) -> (sext_masked_gather x)
   if (auto *GN0 = dyn_cast<MaskedGatherSDNode>(N0)) {
     if (SDValue(GN0, 0).hasOneUse() && ExtVT == GN0->getMemoryVT() &&
-        TLI.isVectorLoadExtDesirable(SDValue(SDValue(N, 0)))) {
+        TLI.isVectorLoadExtDesirable(SDValue(N, 0))) {
       SDValue Ops[] = {GN0->getChain(),   GN0->getPassThru(), GN0->getMask(),
                        GN0->getBasePtr(), GN0->getIndex(),    GN0->getScale()};