[lldb] Show module name in progress update for downloading symbols (llvm#85342)

Currently, we always show the argument passed to dsymForUUID in the
corresponding progress update. Most of the time this is a UUID, but it
can also be an absolute path. The former is pretty uninformative and the
latter needlessly noisy.

This changes the progress update to print the UUID and the module name,
if both are available. Otherwise, we print the UUID or the module name
depending on which one is available.

We now also unconditionally pass the module file spec and architecture
to DownloadObjectAndSymbolFile, while previously this was conditional on
the file existing on-disk. This should be harmless:

  - We already check that the file exists in DownloadObjectAndSymbolFile.
  - It doesn't make sense to check the filesystem for the architecutre.

rdar://124643548
(cherry picked from commit b7dd601)

Author: JDevlieghere

lldb/source/Commands/CommandObjectTarget.cpp

@@ -3172,7 +3172,7 @@ class CommandObjectTargetModulesList : public CommandObjectParsed {
       case 'r': {
         size_t ref_count = 0;
         char in_shared_cache = 'Y';
-        
+
         ModuleSP module_sp(module->shared_from_this());
         if (!ModuleList::ModuleIsInCache(module))
           in_shared_cache = 'N';
@@ -4323,11 +4323,8 @@ class CommandObjectTargetSymbolsAdd : public CommandObjectParsed {
 
     ModuleSpec module_spec;
     module_spec.GetUUID() = frame_module_sp->GetUUID();
-
-    if (FileSystem::Instance().Exists(frame_module_sp->GetPlatformFileSpec())) {
-      module_spec.GetArchitecture() = frame_module_sp->GetArchitecture();
-      module_spec.GetFileSpec() = frame_module_sp->GetPlatformFileSpec();
-    }
+    module_spec.GetArchitecture() = frame_module_sp->GetArchitecture();
+    module_spec.GetFileSpec() = frame_module_sp->GetPlatformFileSpec();
 
     if (!DownloadObjectAndSymbolFile(module_spec, result, flush)) {
       result.AppendError("unable to find debug symbols for the current frame");
@@ -4372,12 +4369,8 @@ class CommandObjectTargetSymbolsAdd : public CommandObjectParsed {
 
       ModuleSpec module_spec;
       module_spec.GetUUID() = frame_module_sp->GetUUID();
-
-      if (FileSystem::Instance().Exists(
-              frame_module_sp->GetPlatformFileSpec())) {
-        module_spec.GetArchitecture() = frame_module_sp->GetArchitecture();
-        module_spec.GetFileSpec() = frame_module_sp->GetPlatformFileSpec();
-      }
+      module_spec.GetFileSpec() = frame_module_sp->GetPlatformFileSpec();
+      module_spec.GetArchitecture() = frame_module_sp->GetArchitecture();
 
       bool current_frame_flush = false;
       if (DownloadObjectAndSymbolFile(module_spec, result, current_frame_flush))

lldb/source/Plugins/SymbolLocator/DebugSymbols/SymbolLocatorDebugSymbols.cpp

@@ -1066,11 +1066,21 @@ bool SymbolLocatorDebugSymbols::DownloadObjectAndSymbolFile(
   command << lookup_arg;
 
   // Log and report progress.
+  std::string lookup_desc;
+  if (uuid_ptr && file_spec_ptr)
+    lookup_desc =
+        llvm::formatv("{0} ({1})", file_spec_ptr->GetFilename().GetString(),
+                      uuid_ptr->GetAsString());
+  else if (uuid_ptr)
+    lookup_desc = uuid_ptr->GetAsString();
+  else if (file_spec_ptr)
+    lookup_desc = file_spec_ptr->GetFilename().GetString();
+
   Log *log = GetLog(LLDBLog::Host);
-  LLDB_LOG(log, "Calling {0} with {1} to find dSYM: {2}", dsymForUUID_exe_path,
-           lookup_arg, command.GetString());
+  LLDB_LOG(log, "Calling {0} for {1} to find dSYM: {2}", dsymForUUID_exe_path,
+           lookup_desc, command.GetString());
 
-  Progress progress("Downloading symbol file", lookup_arg);
+  Progress progress("Downloading symbol file for", lookup_desc);
 
   // Invoke dsymForUUID.
   int exit_status = -1;