[turbofan] Enable tail calls for %_CallFunction.

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index fa5743ab8e4d38865959b139b880d58c9801bf08..2b0a380c311f815db8b8cf439b9965c03f9b162b 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -351,10 +351,6 @@ void CodeGenerator::AssembleDeconstructActivationRecord() {
   if (descriptor->IsJSFunctionCall() || stack_slots > 0) {
     __ Mov(jssp, fp);
     __ Pop(fp, lr);
-    int pop_count = descriptor->IsJSFunctionCall()
-                        ? static_cast<int>(descriptor->JSParameterCount())
-                        : 0;
-    __ Drop(pop_count);
   }
 }
 
@@ -1184,8 +1180,12 @@ void CodeGenerator::AssembleReturn() {
       __ Pop(fp, lr);
       int pop_count = descriptor->IsJSFunctionCall()
                           ? static_cast<int>(descriptor->JSParameterCount())
-                          : 0;
-      __ Drop(pop_count);
+                          : (info()->IsStub()
+                                 ? info()->code_stub()->GetStackParameterCount()
+                                 : 0);
+      if (pop_count != 0) {
+        __ Drop(pop_count);
+      }
       __ Ret();
     }
   } else {