Add the RegisterCompleter to eArgTypeRegisterName in g_argument_table (#82428)

This is a follow-on to:

https://github.com/llvm/llvm-project/pull/82085

The completer for register names was missing from the argument table. I
somehow missed that the only register completer test was x86_64, so that
test broke.

I added the completer in to the right slot in the argument table, and
added a small completions test that just uses the alias register names.
If we end up having a platform that doesn't define register names, we'll
have to skip this test there, but it should add a sniff test for
register completion that will run most everywhere.

1 files changed, 0 insertions, 14 deletions

diff --git a/lldb/source/Commands/CommandObjectCommands.cpp b/lldb/source/Commands/CommandObjectCommands.cpp
index b7cd65059b22..7c459bdaf380 100644
--- a/lldb/source/Commands/CommandObjectCommands.cpp
+++ b/lldb/source/Commands/CommandObjectCommands.cpp
@@ -63,13 +63,6 @@ public:
     return std::string("");
   }
 
-  void
-  HandleArgumentCompletion(CompletionRequest &request,
-                           OptionElementVector &opt_element_vector) override {
-    lldb_private::CommandCompletions::InvokeCommonCompletionCallbacks(
-        GetCommandInterpreter(), lldb::eDiskFileCompletion, request, nullptr);
-  }
-
   Options *GetOptions() override { return &m_options; }
 
 protected:
@@ -1968,13 +1961,6 @@ public:
 
   ~CommandObjectCommandsScriptImport() override = default;
 
-  void
-  HandleArgumentCompletion(CompletionRequest &request,
-                           OptionElementVector &opt_element_vector) override {
-    lldb_private::CommandCompletions::InvokeCommonCompletionCallbacks(
-        GetCommandInterpreter(), lldb::eDiskFileCompletion, request, nullptr);
-  }
-
   Options *GetOptions() override { return &m_options; }
 
 protected: