[turbofan] Connect non-terminating loops via Terminate.

src/compiler/instruction-selector.cc

Index: src/compiler/instruction-selector.cc
diff --git a/src/compiler/instruction-selector.cc b/src/compiler/instruction-selector.cc
index b53b31e7bed9ee2ae6c52f470fa5724cc832ffb1..96030794447e2e266c28ef0fcc60d975b9894fc5 100644
--- a/src/compiler/instruction-selector.cc
+++ b/src/compiler/instruction-selector.cc
@@ -474,9 +474,6 @@ void InstructionSelector::VisitControl(BasicBlock* block) {
       BasicBlock* tbranch = block->SuccessorAt(0);
       BasicBlock* fbranch = block->SuccessorAt(1);
       if (tbranch == fbranch) return VisitGoto(tbranch);
-      // Treat special Branch(Always, IfTrue, IfFalse) as Goto(IfTrue).
-      Node* const condition = input->InputAt(0);
-      if (condition->opcode() == IrOpcode::kAlways) return VisitGoto(tbranch);
       return VisitBranch(input, tbranch, fbranch);
     }
     case BasicBlock::kSwitch: {
@@ -550,6 +547,7 @@ void InstructionSelector::VisitNode(Node* node) {
     case IrOpcode::kIfDefault:
     case IrOpcode::kEffectPhi:
     case IrOpcode::kMerge:
+    case IrOpcode::kTerminate:
       // No code needed for these graph artifacts.
       return;
     case IrOpcode::kIfException: