https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121424
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I found one location where we don't set the location on the debug statements:
```
diff --git a/gcc/tree-into-ssa.cc b/gcc/tree-into-ssa.cc
index 3499b7f5829..bc859761516 100644
--- a/gcc/tree-into-ssa.cc
+++ b/gcc/tree-into-ssa.cc
@@ -1370,6 +1370,7 @@ rewrite_stmt (gimple_stmt_iterator *si)
}
}
+ location_t loc = gimple_location (stmt);
/* Step 2. Register the statement's DEF operands. */
if (register_defs_p (stmt))
FOR_EACH_SSA_DEF_OPERAND (def_p, stmt, iter, SSA_OP_ALL_DEFS)
@@ -1405,6 +1406,7 @@ rewrite_stmt (gimple_stmt_iterator *si)
if (tracked_var)
{
gimple *note = gimple_build_debug_bind (tracked_var, name, stmt);
+ gimple_set_location (note, loc);
gsi_insert_after (si, note, GSI_SAME_STMT);
}
}
```
But I am not 100% sure this will improve things.
I should note clang/LLVM does NOT duplicate the ret instruction at any
optimization level so it does not expose this oddity.
