* c-common.h (add_stmt): Change prototype.
(RECHAIN_STMTS): New macro.
(CASE_LABEL_DECL): Likewise.
(genrtl_case_label): Change prototype.
(c_expand_start_case): Remove prototype.
(build_case_label): Change prototype.
(decl_constant_value): Declare.
* c-common.c (check_case_value): Handle C++'s extensions to C
semantics.
* c-commnon.def (CASE_LABEL): Add room for the CASE_LABEL_DECL
field.
* c-parse.in (stmt): Adjust handling of return statements and case
laels.
* c-semantics.c (add_stmt): Return the new statement.
(genrtl_return_stmt): Take the RETURN_STMT as input, not the
returned expression. Directly generate RTL, rather than calling
c_expand_return.
(genrtl_switch_stmt): Don't call c_expand_start_case.
(build_case_label): Take the LABEL_DECL as input, too.
(genrtl_case_label): Just call add_case_node.
(expand_stmt): Adjust calls to genrtl_return_stmt and
genrtl_case_label.
* c-tree.h (c_expand_start_case): Declare.
* c-typeck.c (decl_constant_value): Give it external linkage.
(c_expand_return): Don't call expand_return or expand_null_return;
use genrtl_return_stmt instead.
* stmt.c (struct nesting): Remove num_ranges field.
(add_case_node): Give it external linkage.
(expand_start_case): Don't set num_ranges.
(expand_start_case_dummy): Don't clear it.
(pushcase): Rely on add_case_node to handle `default' labels.
(add_case_node): Handle `default' labels.
* tree.c (tree_int_cst_compare): New function.
* tree.h (tree_int_cst_compare): Declare.
(add_case_node): Likewise.
* cp-tree.h (push_switch): Change prototype.
(check_cp_case_value): Remove declaration.
(decl_constant_value): Likewise.
* decl.c (struct cp_switch): Add switch_stmt and cases.
(case_compare): New function.
(push_switch): Set switch_stmt. Initialize cases.
(pop_switch): Clean up cases.
(define_case_label): Rename to ...
(finish_case_label): ... this. Do semantic analysis for case
labels here.
(start_function): Correct comment.
* decl2.c (check_cp_case_value): Remove.
* expr.c (do_case): Remove.
* pt.c (tsubst_expr): Adjust call to finish_case_label.
* semantics.c (genrtl_do_poplevel): Remove declaration.
(RECHAIN_STMTS): Remove.
(finish_break_stmt): Use build_break_stmt.
(finish_continue_stmt): Use build_continue_stmt.
(finish_switch_cond): Adjust condition here, rater than in
c_expand_start_case.
(finish_case_label): Remove.
* typeck.c (c_expand_return): Remove.
(c_expand_start_case): Likewise.