[lldb][nfc] remove overriden funcs with default impl

Summary:
These `SearchFilter` methods all return `true` by their default
implementation:

```lang=c++
virtual bool ModulePasses(const FileSpec &spec);
virtual bool ModulePasses(const lldb::ModuleSP &module_sp);
virtual bool AddressPasses(Address &addr);
virtual bool CompUnitPasses(FileSpec &fileSpec);
virtual bool CompUnitPasses(CompileUnit &compUnit);
```

That's why I've documented the default behavior and remove the overrides
(except for `AddressPasses`) in these `SearchFilter`-subclasses which all just
repeated the default implementation: `SearchFilterByModule`,
`SearchFilterByModuleList`.

Reviewers: jankratochvil, labath

Reviewed By: jankratochvil, labath

Subscribers: labath, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D77376

lldb/include/lldb/Core/SearchFilter.h

@@ -98,6 +98,8 @@ class SearchFilter {
   ///    The file spec to check against the filter.
   /// \return
   ///    \b true if \a spec passes, and \b false otherwise.
+  ///
+  /// \note the default implementation always returns \c true.
   virtual bool ModulePasses(const FileSpec &spec);
 
   /// Call this method with a Module to see if that module passes the filter.
@@ -107,6 +109,8 @@ class SearchFilter {
   ///
   /// \return
   ///    \b true if \a module passes, and \b false otherwise.
+  ///
+  /// \note the default implementation always returns \c true.
   virtual bool ModulePasses(const lldb::ModuleSP &module_sp);
 
   /// Call this method with a Address to see if \a address passes the filter.
@@ -116,6 +120,8 @@ class SearchFilter {
   ///
   /// \return
   ///    \b true if \a address passes, and \b false otherwise.
+  ///
+  /// \note the default implementation always returns \c true.
   virtual bool AddressPasses(Address &addr);
 
   /// Call this method with a FileSpec to see if \a file spec passes the
@@ -126,6 +132,8 @@ class SearchFilter {
   ///
   /// \return
   ///    \b true if \a file spec passes, and \b false otherwise.
+  ///
+  /// \note the default implementation always returns \c true.
   virtual bool CompUnitPasses(FileSpec &fileSpec);
 
   /// Call this method with a CompileUnit to see if \a comp unit passes the
@@ -136,6 +144,8 @@ class SearchFilter {
   ///
   /// \return
   ///    \b true if \a Comp Unit passes, and \b false otherwise.
+  ///
+  /// \note the default implementation always returns \c true.
   virtual bool CompUnitPasses(CompileUnit &compUnit);
 
   /// Call this method with a Function to see if \a function passes the
@@ -321,10 +331,6 @@ class SearchFilterByModule : public SearchFilter {
 
   bool AddressPasses(Address &address) override;
 
-  bool CompUnitPasses(FileSpec &fileSpec) override;
-
-  bool CompUnitPasses(CompileUnit &compUnit) override;
-
   void GetDescription(Stream *s) override;
 
   uint32_t GetFilterRequiredItems() override;
@@ -372,10 +378,6 @@ class SearchFilterByModuleList : public SearchFilter {
 
   bool AddressPasses(Address &address) override;
 
-  bool CompUnitPasses(FileSpec &fileSpec) override;
-
-  bool CompUnitPasses(CompileUnit &compUnit) override;
-
   void GetDescription(Stream *s) override;
 
   uint32_t GetFilterRequiredItems() override;

lldb/source/Core/SearchFilter.cpp

@@ -417,12 +417,6 @@ bool SearchFilterByModule::AddressPasses(Address &address) {
   return true;
 }
 
-bool SearchFilterByModule::CompUnitPasses(FileSpec &fileSpec) { return true; }
-
-bool SearchFilterByModule::CompUnitPasses(CompileUnit &compUnit) {
-  return true;
-}
-
 void SearchFilterByModule::Search(Searcher &searcher) {
   if (!m_target_sp)
     return;
@@ -543,14 +537,6 @@ bool SearchFilterByModuleList::AddressPasses(Address &address) {
   return true;
 }
 
-bool SearchFilterByModuleList::CompUnitPasses(FileSpec &fileSpec) {
-  return true;
-}
-
-bool SearchFilterByModuleList::CompUnitPasses(CompileUnit &compUnit) {
-  return true;
-}
-
 void SearchFilterByModuleList::Search(Searcher &searcher) {
   if (!m_target_sp)
     return;