[gcc(refs/users/aldyh/heads/threader-refactor)] wip wip

[Aldy Hernandez]

https://gcc.gnu.org/g:a68640a8f9f09cce8280233fea43750ceedd9b62

commit a68640a8f9f09cce8280233fea43750ceedd9b62
Author: Aldy Hernandez <aldyh@redhat.com>
Date:   Mon Nov 23 18:09:00 2020 +0100

    wip wip
    
    BOOTSTRAPS

Diff:
---
 gcc/tree-ssa-threadbackward.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gcc/tree-ssa-threadbackward.c b/gcc/tree-ssa-threadbackward.c
index 542f422fd72..a28a20d6de1 100644
--- a/gcc/tree-ssa-threadbackward.c
+++ b/gcc/tree-ssa-threadbackward.c
@@ -827,6 +827,9 @@ pass_thread_jumps::execute (function *fun)
       if (EDGE_COUNT (bb->succs) > 1)
 	backwards_threader.find_jump_threads_backwards (bb, true);
     }
+  // FIXME: Put registry in thread_jumps and call thread_through_all_blocks
+  // from the destructor?  Is it ok to call thread_through_all_blocks
+  // before loop_optimizer_finalize below?
   bool changed = registry.thread_through_all_blocks (true);
 
   loop_optimizer_finalize ();
@@ -889,6 +892,9 @@ pass_early_thread_jumps::execute (function *fun)
       if (EDGE_COUNT (bb->succs) > 1)
 	backwards_threader.find_jump_threads_backwards (bb, false);
     }
+  // FIXME: Put registry in thread_jumps and call thread_through_all_blocks
+  // from the destructor?  Is it ok to call thread_through_all_blocks
+  // before loop_optimizer_finalize below?
   registry.thread_through_all_blocks (true);
 
   loop_optimizer_finalize ();