[mips64][ptr-compr] Add function 'VisitChangeTaggedToCompressed'.

Change-Id: Ie2c7462e336de22aa1b91019a4e06bd44475b95c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1914003Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Auto-Submit: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#64940}

src/compiler/backend/mips64/instruction-selector-mips64.cc

@@ -1357,6 +1357,10 @@ void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
        g.TempImmediate(0), g.TempImmediate(32));
 }
 
+void InstructionSelector::VisitChangeTaggedToCompressed(Node* node) {
+  UNIMPLEMENTED();
+}
+
 void InstructionSelector::VisitTruncateInt64ToInt32(Node* node) {
   Mips64OperandGenerator g(this);
   Node* value = node->InputAt(0);