[PATCH 01/11] gdb/dwarf: remove unused file_match parameter from dwarf2_base_index_functions::search_one

[Simon Marchi <simon.marchi@efficios.com>]

The `file_matcher` parameter is unused.

The information from `file_matcher` is actually encoded in
`cus_to_skip`.  All callers to this:

    auto_bool_vector cus_to_skip;
    dw_search_file_matcher (per_objfile, cus_to_skip, file_matcher);

... which populates `cus_to_skip` with all the CUs that do not match
`file_matcher`.

Change-Id: I7fd642f84d72ad2595c1e6de38db3869cc555ce9
---
 gdb/dwarf2/read.c | 13 ++++++-------
 gdb/dwarf2/read.h |  6 +++---
 2 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 4035bba6e45b..02e6c00dfef5 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -1480,8 +1480,8 @@ struct readnow_functions : public dwarf2_base_index_functions
 	    || per_cu->unit_type (false) == 0
 	    || per_objfile->get_compunit_symtab (per_cu.get ()) == nullptr)
 	  continue;
-	if (!search_one (per_cu.get (), per_objfile, cus_to_skip, file_matcher,
-			 listener, lang_matcher))
+	if (!search_one (per_cu.get (), per_objfile, cus_to_skip, listener,
+			 lang_matcher))
 	  return false;
       }
     return true;
@@ -1923,7 +1923,6 @@ dwarf2_base_index_functions::search_one
   (dwarf2_per_cu *per_cu,
    dwarf2_per_objfile *per_objfile,
    auto_bool_vector &cus_to_skip,
-   search_symtabs_file_matcher file_matcher,
    search_symtabs_expansion_listener listener,
    search_symtabs_lang_matcher lang_matcher)
 {
@@ -14056,8 +14055,8 @@ cooked_index_functions::search
 	{
 	  QUIT;
 
-	  if (!search_one (per_cu, per_objfile, cus_to_skip, file_matcher,
-			   listener, lang_matcher))
+	  if (!search_one (per_cu, per_objfile, cus_to_skip, listener,
+			   lang_matcher))
 	    return false;
 	}
       return true;
@@ -14224,8 +14223,8 @@ cooked_index_functions::search
 
 	  bool check = entry->visit_defining_cus ([&] (dwarf2_per_cu *per_cu)
 	    {
-	      return search_one (per_cu, per_objfile, cus_to_skip,
-				 file_matcher, listener, nullptr);
+	      return search_one (per_cu, per_objfile, cus_to_skip, listener,
+				 nullptr);
 	    });
 	  if (!check)
 	    return false;
diff --git a/gdb/dwarf2/read.h b/gdb/dwarf2/read.h
index 1150c3cfdcad..fddaaa7d9e5c 100644
--- a/gdb/dwarf2/read.h
+++ b/gdb/dwarf2/read.h
@@ -1318,11 +1318,11 @@ struct dwarf2_base_index_functions : public quick_symbol_functions
 			     bool need_fullname) override;
 
 protected:
-  /* If FILE_MATCHER is NULL and if CUS_TO_SKIP does not include the CU's index,
-     expand the CU and call LISTENER on it.  */
+  /* If CUS_TO_SKIP does not include the CU's index and the CU's language
+     matches LANG_MATCHER, expand the CU and call LISTENER (if provided) on
+     it.  */
   bool search_one (dwarf2_per_cu *per_cu, dwarf2_per_objfile *per_objfile,
 		   auto_bool_vector &cus_to_skip,
-		   search_symtabs_file_matcher file_matcher,
 		   search_symtabs_expansion_listener listener,
 		   search_symtabs_lang_matcher lang_matcher);
 };
-- 
2.53.0