This updates all of the gimple_bind_* accessors in gimple.h from taking a
plain gimple to taking a gimple_bind (or const_gimple_bind), with the
checking happening at the point of cast.
Various other types are strengthened from gimple to gimple_bind, and from
plain vec<gimple> to vec<gimple_bind>.
gcc/
* coretypes.h (gimple_bind): New typedef.
(const_gimple_bind): New typedef.
* gdbhooks.py (build_pretty_printer): Add gimple_bind
and its variants, using the gimple printer.
* gimple-pretty-print.c (dump_gimple_bind): Update type-signature to
require a gimple_bind rather than just a gimple.
* gimple.c (gimple_build_bind): Return a gimple_bind rather than
just a gimple.
* gimple.h (gimple_build_bind): Likewise.
* gimple.h (gimple_statement_base::as_a_gimple_bind): New.
(gimple_statement_base::dyn_cast_gimple_bind): New.
(gimple_seq_first_stmt_as_a_bind): New.
* gimple.h (gimple_bind_vars): Update type-signature to
require a gimple_bind rather than just a gimple, removing
as_a and hence run-time check.
(gimple_bind_set_vars): Likewise.
(gimple_bind_append_vars): Likewise.
(gimple_bind_body_ptr): Likewise.
(gimple_bind_body): Likewise.
(gimple_bind_set_body): Likewise.
(gimple_bind_add_stmt): Likewise.
(gimple_bind_add_seq): Likewise.
(gimple_bind_block): Likewise.
(gimple_bind_set_block): Likewise.
* gimplify.c (gimple_push_bind_expr): Likewise.
(gimple_current_bind_expr): Likewise.
* tree-inline.c (copy_gimple_bind): Likewise.
* gimplify.h (gimple_current_bind_expr): Return a gimple_bind
rather than a plain gimple.
(gimplify_body): Likewise.
(gimple_bind_expr_stack): Return a vec<gimple_bind> rather than
a vec<gimple>.
* gimplify.c (struct gimplify_ctx): Strengthen field
"bind_expr_stack" from vec<gimple> to vec<gimple_bind>.
(gimple_bind_expr_stack): Likewise for type of returned value.
* gimplify.c (gimplify_body): Strengthen various types from gimple
to gimple_bind, including the return type.
* gimplify.c (declare_vars): Introduce "gs" as a generic gimple,
so that local "scope" can be of type gimple_bind once we've reached
the region where it must be of code GIMPLE_BIND.
* gimple-low.c (lower_gimple_bind): Add checked cast to
gimple_bind, since both callers (lower_function_body and
lower_stmt) have checked the code for us.
* gimple.c (gimple_copy): Add checked cast to gimple_bind in
region guarded by check for code GIMPLE_BIND.
* gimple-low.c (gimple_stmt_may_fallthru): Likewise.
* gimple-pretty-print.c (pp_gimple_stmt_1): Likewise.
* gimple-walk.c (walk_gimple_stmt): Likewise.
* omp-low.c (scan_omp_1_stmt): Likewise.
(lower_omp_1): Likewise.
(lower_omp_for): Likewise.
* tree-cfg.c (verify_gimple_in_seq_2): Likewise.
(do_warn_unused_result): Likewise.
* tree-inline.c (remap_gimple_stmt): Likewise.
(estimate_num_insns): Likewise.
* tree-nested.c (convert_nonlocal_reference_stmt): Likewise.
* gimplify.c (gimplify_bind_expr): Update local(s) to be a
gimple_bind rather than just a gimple.
(gimplify_function_tree): Likewise.
* omp-low.c (lower_omp_sections): Likewise.
(lower_omp_single): Likewise.
(lower_omp_master): Likewise.
(lower_omp_taskgroup): Likewise.
(lower_omp_ordered): Likewise.
(lower_omp_critical): Likewise.
(lower_omp_taskreg): Likewise.
(lower_omp_teams): Likewise.
* omp-low.c (lower_omp_for): Likewise; use
gimple_seq_first_stmt_as_a_bind to encapsulate the checked cast.
(lower_omp_target): Likewise.
* tree-nested.c (finalize_nesting_tree_1): Likewise.
* gimple.c (empty_stmt_p): Add dyn_cast to a gimple_bind.
* tree-inline.c (replace_locals_stmt): Add dyn_cast to gimple_bind.
gcc/c-family/
* c-gimplify.c (add_block_to_enclosing): Strengthen local "stack"
from being just a vec<gimple> to a vec<gimple_bind>.
gcc/java/
* java-gimplify.c (java_gimplify_block): Update local to be a
gimple_bind rather than just a gimple.