[gcc r12-5007] Remove workaround allowing interposition of nested functions.

[Jan Hubicka <hubicka@gcc.gnu.org>]

https://gcc.gnu.org/g:d44d791012efda1f48ed647d1d3a1538d15d4e19

commit r12-5007-gd44d791012efda1f48ed647d1d3a1538d15d4e19
Author: Jan Hubicka <hubicka@ucw.cz>
Date:   Mon Nov 8 18:58:03 2021 +0100

    Remove workaround allowing interposition of nested functions.
    
            * gimple.c (gimple_call_static_chain_flags): Revert the workaround
            allowing interposition since issues with binds_to_local_def were
            hopefully solved.

Diff:
---
 gcc/gimple.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gcc/gimple.c b/gcc/gimple.c
index 3d1d3a15b2c..9e65fa61c73 100644
--- a/gcc/gimple.c
+++ b/gcc/gimple.c
@@ -1645,13 +1645,13 @@ gimple_call_static_chain_flags (const gcall *stmt)
       modref_summary *summary = node ? get_modref_function_summary (node)
 				: NULL;
 
+      /* Nested functions should always bind to current def since
+	 there is no public ABI for them.  */
+      gcc_checking_assert (node->binds_to_current_def_p ());
       if (summary)
 	{
 	  int modref_flags = summary->static_chain_flags;
 
-	  /* ??? Nested functions should always bind to current def.  */
-	  if (!node->binds_to_current_def_p ())
-	    modref_flags = interposable_eaf_flags (modref_flags, flags);
 	  if (dbg_cnt (ipa_mod_ref_pta))
 	    flags |= modref_flags;
 	}