[X86] EmitTruncSStore - X86ISD::VTRUNCSTORES/VTRUNCSTOREUS no longer take a mask operand (#185676)

X86ISD::VMTRUNCSTORES/VMTRUNCSTOREUS were split off some time ago

Fixes verification failure in X86SelectionDAGInfo::verifyTargetNode
(#185649)

llvm/lib/Target/X86/X86ISelLowering.cpp

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 5cc2252..5edfd0c 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -28180,8 +28180,7 @@
                 SDValue Ptr, EVT MemVT, MachineMemOperand *MMO,
                 SelectionDAG &DAG) {
   SDVTList VTs = DAG.getVTList(MVT::Other);
-  SDValue Undef = DAG.getUNDEF(Ptr.getValueType());
-  SDValue Ops[] = { Chain, Val, Ptr, Undef };
+  SDValue Ops[] = {Chain, Val, Ptr};
   unsigned Opc = SignedSat ? X86ISD::VTRUNCSTORES : X86ISD::VTRUNCSTOREUS;
   return DAG.getMemIntrinsicNode(Opc, DL, VTs, Ops, MemVT, MMO);
 }

llvm/lib/Target/X86/X86SelectionDAGInfo.cpp

diff --git a/llvm/lib/Target/X86/X86SelectionDAGInfo.cpp b/llvm/lib/Target/X86/X86SelectionDAGInfo.cpp
index f5e422c..77f8a3f 100644
--- a/llvm/lib/Target/X86/X86SelectionDAGInfo.cpp
+++ b/llvm/lib/Target/X86/X86SelectionDAGInfo.cpp
@@ -72,8 +72,6 @@
     break;
   case X86ISD::VP2INTERSECT:
     // invalid number of results; expected 1, got 2
-  case X86ISD::VTRUNCSTOREUS:
-  case X86ISD::VTRUNCSTORES:
   case X86ISD::FSETCCM_SAE:
     // invalid number of operands; expected 3, got 4
   case X86ISD::CVTTP2SI_SAE: