[gcc r13-10464] tree-optimization/124627 - inlining and elided debug stmts

https://gcc.gnu.org/g:9c3648f74565225a21bdb670c5826897b01aa806

commit r13-10464-g9c3648f74565225a21bdb670c5826897b01aa806
Author: Richard Biener <[email protected]>
Date:   Wed Mar 25 09:40:56 2026 +0100

    tree-optimization/124627 - inlining and elided debug stmts
    
    When we fixup a noreturn call during inlining we can end up eliding
    debug stmts, so we have to make sure to not re-instantiate SSA
    operands on those later when processing all debug stmts.
    
            PR tree-optimization/124627
            * tree-inline.cc (copy_debug_stmts): Only copy debug
            stmts that are still in the IL.
    
    (cherry picked from commit 415a00e0aae8b39ca81debfcdf82f9c53af203e7)

Diff:
---
 gcc/tree-inline.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/tree-inline.cc b/gcc/tree-inline.cc
index f97344b59d18..12465954b309 100644
--- a/gcc/tree-inline.cc
+++ b/gcc/tree-inline.cc
@@ -3296,7 +3296,9 @@ copy_debug_stmts (copy_body_data *id)
     return;
 
   for (gdebug *stmt : id->debug_stmts)
-    copy_debug_stmt (stmt, id);
+    /* But avoid re-processing debug stmts that have been elided.  */
+    if (gimple_bb (stmt))
+      copy_debug_stmt (stmt, id);
 
   id->debug_stmts.release ();
 }