Concretize gimple_call_nothrow_p
This corresponds to:
[PATCH 79/89] Concretize gimple_call_nothrow_p
https://gcc.gnu.org/ml/gcc-patches/2014-04/msg01204.html
from the original 89-patch kit
That earlier patch was approved by Jeff:
> OK once prerequisites have gone in.
in https://gcc.gnu.org/ml/gcc-patches/2014-05/msg00844.html
gcc/
* gimple.h (gimple_call_nothrow_p): Require a gimple_call.
* tree-eh.c (stmt_could_throw_p): Add checked cast to gimple_call.
* tree-vect-slp.c (vect_build_slp_tree_1): Replace call to
is_gimple_call with dyn_cast<gimple_call>, introducing a local.