[gcc r17-3384] [PATCH] clean(final.cc): Remove unused static variables.

https://gcc.gnu.org/g:6f62875a05f6275c171dbbe5ef824eff0d2dcd97

commit r17-3384-g6f62875a05f6275c171dbbe5ef824eff0d2dcd97
Author: Léo Hardt <[email protected]>
Date:   Tue Aug 18 10:37:09 2026 -0600

    [PATCH] clean(final.cc): Remove unused static variables.
    
    Good evening,
    
    This patch removes the following static variables from 'final.cc':
      override_filename, override_linenum,
      override_columnnum, override_discriminator
    
    You will note by browsing the trunk's code that override_filename is
    never set, and therefore the only usage of those variables is never
    triggered. They can therefore be safely removed.
    
    For context, they were added in [1,2] to track code location for
    some inline functions. It's the same patch which implemented
    tree_nonartificial_location. These variables specifically were only
    needed for DBX debugging info. Notice that their last (non-null) use
    was removed on 7e0db0cdf (2022), when -gstabs and -gxcoff functionality
    were removed.
    
    I have successfully bootstrapped the compiler with the changes below.
    
    [1] Commit in which override_filename was added: d752cfdb, Sep 2007
    https://gcc.gnu.org/pipermail/gcc-patches/2007-August/224337.html
    
    [2] Commit in which override_columnnum was added: 497b7c47, Feb 2017
    https://gcc.gnu.org/pipermail/gcc-patches/2017-February/469644.html
    referencing patch https://gcc.gnu.org/pipermail/gcc-patches/2017-February/469643.html
    
    gcc/ChangeLog:
    
            * final.cc (notice_source_line): Remove dead condition
            for override_filename.

Diff:
---
 gcc/final.cc | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/gcc/final.cc b/gcc/final.cc
index 0152be59fc85..a99b188d0432 100644
--- a/gcc/final.cc
+++ b/gcc/final.cc
@@ -133,12 +133,6 @@ static int high_function_linenum;
 /* Filename of last NOTE.  */
 static const char *last_filename;
 
-/* Override filename, line and column number.  */
-static const char *override_filename;
-static int override_linenum;
-static int override_columnnum;
-static int override_discriminator;
-
 /* Whether to force emission of a line note before the next insn.  */
 static bool force_source_line = false;
 
@@ -3001,13 +2995,6 @@ notice_source_line (rtx_insn *insn, bool *is_stmt)
       discriminator = compute_discriminator (loc);
       force_source_line = true;
     }
-  else if (override_filename)
-    {
-      filename = override_filename;
-      linenum = override_linenum;
-      columnnum = override_columnnum;
-      discriminator = override_discriminator;
-    }
   else if (INSN_HAS_LOCATION (insn))
     {
       expanded_location xloc = insn_location (insn);