re PR tree-optimization/19578 (function pointer propagation fails for noreturn functions (part 2))
PR tree-optimization/19578
* tree-flow.h (modified_noreturn_calls): Declare.
(noreturn_call_p): Declare.
* tree-flow-inline.h (noreturn_call_p): New function.
(modify_stmt): Add modified noreturn calls to modified_noreturn_calls.
* tree-cfg.c (modified_noreturn_calls): New variable.
(cleanup_control_flow): Use noreturn_call_p. Split basic blocks
that contain a mid-block noreturn call.
* tree-ssa.c (delete_tree_ssa): Clear modified_noreturn_calls.
From-SVN: r94610