[Bug tree-optimization/118517] ICE in single_succ_edge, at basic-block.h:332 since r15-5336-gcee7d080d5c2a5

[mjires at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118517

--- Comment #1 from Michal Jireš <mjires at gcc dot gnu.org> ---
The patch trips up on empty basic block without successors.
This block comes from DSE and can be fixed by:

--- a/gcc/tree-ssa-dse.cc
+++ b/gcc/tree-ssa-dse.cc
@@ -1396,8 +1396,9 @@ dse_optimize_call (gimple_stmt_iterator *gsi, sbitmap
live_bytes)
   if (!node)
     return false;

-  if (stmt_could_throw_p (cfun, stmt)
-      && !cfun->can_delete_dead_exceptions)
+  if ((stmt_could_throw_p (cfun, stmt)
+       && !cfun->can_delete_dead_exceptions)
+      || gimple_call_ctrl_altering_p (stmt))
     return false;