diff options
Diffstat (limited to 'gcc/function.cc')
| -rw-r--r-- | gcc/function.cc | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/gcc/function.cc b/gcc/function.cc index 5498a71..6474a66 100644 --- a/gcc/function.cc +++ b/gcc/function.cc @@ -6249,10 +6249,15 @@ thread_prologue_and_epilogue_insns (void) } } - /* Threading the prologue and epilogue changes the artificial refs - in the entry and exit blocks. */ - epilogue_completed = 1; - df_update_entry_exit_and_calls (); + /* Threading the prologue and epilogue changes the artificial refs in the + entry and exit blocks, and may invalidate DF info for tail calls. */ + if (optimize) + df_update_entry_exit_and_calls (); + else + { + df_update_entry_block_defs (); + df_update_exit_block_uses (); + } } /* Reposition the prologue-end and epilogue-begin notes after |