Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>

	* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
	and gcc_unreachable instead of abort.
	* lambda.h (lambda_vector_min_nz): Likewise.
	* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
	lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
	lhd_gimplify_expr): Likewise.
	* lcm.c (optimize_mode_switching): Likewise.
	* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
	Likewise.
	* loop-doloop.c (doloop_modify): Likewise.
	* loop-invariant.c (record_use): Likewise.
	* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
	canon_condition, simplify_using_condition,
	simplify_using_initial_values, shorten_into_mode,
	canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
	* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
	unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
	peel_loop_simple, unroll_loop_stupid): Likewise.
	* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
	unswitch_loop): Likewise.
	* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
	move_movables, replace_call_address, find_and_verify_loops,
	rtx_equal_for_prefetch_p, record_giv, general_induction_var,
	simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
	loop_giv_dump): Likewise.
	* loop.h (INSN_LUID): Likewise.
	* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
	sms_schedule, check_nodes_order): Likewise.
	* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
	expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
	expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
	emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
	prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
	have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
	Likewise.
	* opts.c (common_handle_option): Likewise.
	* params.c (set_param_value): Likewise.
	* passes.c (open_dump_file, rest_of_handle_final): Likewise.
	* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
	reg_set_between_after_reload_p, reg_used_between_after_reload_p,
	get_avail_load_store_reg, eliminate_partially_redundant_load):
	Likewise.
	* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
	Likewise.
	* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
	propagate_freq, expensive_function_p): Likewise.
	* pretty-print.c (pp_base_format_text)
	* profile.c (instrument_edges, instrument_values,
	compute_branch_probabilities, branch_prob, union_groups,
	end_branch_prob, tree_register_profile_hooks): Likewise.

From-SVN: r87290

1 files changed, 16 insertions, 16 deletions

diff --git a/gcc/lcm.c b/gcc/lcm.c
index 2c0d81e01c5..3432332a06a 100644
--- a/gcc/lcm.c
+++ b/gcc/lcm.c
@@ -1029,7 +1029,8 @@ optimize_mode_switching (FILE *file)
 	{
 	  regset live_at_end = eg->src->global_live_at_end;
 
-	  gcc_assert (!pre_exit);
+	  if (pre_exit)
+	    abort ();
 	  pre_exit = split_edge (eg);
 	  COPY_REG_SET (pre_exit->global_live_at_start, live_at_end);
 	  COPY_REG_SET (pre_exit->global_live_at_end, live_at_end);
@@ -1207,22 +1208,21 @@ optimize_mode_switching (FILE *file)
 		  emited = true;
 		  if (JUMP_P (BB_END (src_bb)))
 		    emit_insn_before (mode_set, BB_END (src_bb));
+		  /* It doesn't make sense to switch to normal mode
+		     after a CALL_INSN, so we're going to abort if we
+		     find one.  The cases in which a CALL_INSN may
+		     have an abnormal edge are sibcalls and EH edges.
+		     In the case of sibcalls, the dest basic-block is
+		     the EXIT_BLOCK, that runs in normal mode; it is
+		     assumed that a sibcall insn requires normal mode
+		     itself, so no mode switch would be required after
+		     the call (it wouldn't make sense, anyway).  In
+		     the case of EH edges, EH entry points also start
+		     in normal mode, so a similar reasoning applies.  */
+		  else if (NONJUMP_INSN_P (BB_END (src_bb)))
+		    emit_insn_after (mode_set, BB_END (src_bb));
 		  else
-		    { 
-		     /* It doesn't make sense to switch to normal mode
-			after a CALL_INSN, so we're going to abort if we
-			find one.  The cases in which a CALL_INSN may
-			have an abnormal edge are sibcalls and EH edges.
-			In the case of sibcalls, the dest basic-block is
-			the EXIT_BLOCK, that runs in normal mode; it is
-			assumed that a sibcall insn requires normal mode
-			itself, so no mode switch would be required after
-			the call (it wouldn't make sense, anyway).  In
-			the case of EH edges, EH entry points also start
-			in normal mode, so a similar reasoning applies.  */
-		      gcc_assert (NONJUMP_INSN_P (BB_END (src_bb)));
-		      emit_insn_after (mode_set, BB_END (src_bb));
-		    }
+		    abort ();
 		  bb_info[j][src_bb->index].computing = mode;
 		  RESET_BIT (transp[src_bb->index], j);
 		}