[turbofan] Support variable size argument popping in TF-generated functions

src/compiler/tail-call-optimization.cc

Index: src/compiler/tail-call-optimization.cc
diff --git a/src/compiler/tail-call-optimization.cc b/src/compiler/tail-call-optimization.cc
index 7e1623aeca6147dda804b1375711aad7f55f67b4..2a4ea149816890da7fb24a4f247ecfdf72039221 100644
--- a/src/compiler/tail-call-optimization.cc
+++ b/src/compiler/tail-call-optimization.cc
@@ -18,7 +18,7 @@ Reduction TailCallOptimization::Reduce(Node* node) {
   // The value which is returned must be the result of a potential tail call,
   // there must be no try/catch/finally around the Call, and there must be no
   // other effect between the Call and the Return nodes.
-  Node* const call = NodeProperties::GetValueInput(node, 0);
+  Node* const call = NodeProperties::GetValueInput(node, 1);
   if (call->opcode() == IrOpcode::kCall &&
       CallDescriptorOf(call->op())->SupportsTailCalls() &&
       NodeProperties::GetEffectInput(node) == call &&
@@ -62,9 +62,10 @@ Reduction TailCallOptimization::Reduce(Node* node) {
       //                 |
 
       DCHECK_EQ(call, NodeProperties::GetControlInput(control, 0));
-      DCHECK_EQ(3, node->InputCount());
+      DCHECK_EQ(4, node->InputCount());
       node->ReplaceInput(0, NodeProperties::GetEffectInput(call));
       node->ReplaceInput(1, NodeProperties::GetControlInput(call));
+      node->RemoveInput(3);
       node->RemoveInput(2);
       for (int index = 0; index < call->op()->ValueInputCount(); ++index) {
         node->InsertInput(graph()->zone(), index,