* tree-vrp.c (execute_vrp): Do not check whether current_loops == NULL.

	* tree-chrec.c (evolution_function_is_invariant_rec_p): Ditto.
	* ifcvt.c (if_convert): Ditto.
	* tree-ssa-threadupdate.c (thread_block): Ditto.
	(thread_through_all_blocks): Ditto.  Assert that loops were analysed.
	* tree-ssa-loop-manip.c (rewrite_into_loop_closed_ssa,
	verify_loop_closed_ssa): Check number_of_loops instead of current_loops.
	* predict.c (tree_estimate_probability): Ditto.
	* tree-if-conv.c (main_tree_if_conversion): Ditto.
	* tree-ssa-loop-ch.c (copy_loop_headers): Ditto.
	* modulo-sched.c (sms_schedule): Ditto.
	* tree-scalar-evolution.c (scev_const_prop): Ditto.
	(scev_finalize): Do not do anything if scev analysis was not
	initialized.
	* cfgloopanal.c (mark_irreducible_loops): Do not check whether
	current_loops == NULL.
	(mark_loop_exit_edges): Check number_of_loops instead of current_loops.
	* loop-init.c (loop_optimizer_init): Do not free current_loops when
	there are no loops.
	(loop_optimizer_finalize): Assert that loops were analyzed.
	(rtl_move_loop_invariants, rtl_unswitch, rtl_unroll_and_peel_loops,
	rtl_doloop): Check number_of_loops instead of current_loops.
	* tree-ssa-loop.c (tree_loop_optimizer_init): Do not check whether
	current_loops == NULL.
	(tree_ssa_loop_init, tree_ssa_loop_im, tree_ssa_loop_unswitch,
	gate_tree_vectorize tree_linear_transform, check_data_deps,
	tree_ssa_loop_ivcanon, tree_ssa_empty_loop, tree_ssa_loop_bounds,
	tree_complete_unroll, tree_ssa_loop_prefetch, tree_ssa_loop_ivopts):
	Check number_of_loops instead of current_loops.
	(tree_ssa_loop_done): Do not check whether current_loops == NULL.
	* tree-ssa-pre.c (fini_pre): Do not take do_fre argument.  Always
	free loops if available.
	(execute_pre): Do not pass do_fre to fini_pre.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125114 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 1 deletions

diff --git a/gcc/tree-scalar-evolution.c b/gcc/tree-scalar-evolution.c
index eb45529e8f2..fd559388d65 100644
--- a/gcc/tree-scalar-evolution.c
+++ b/gcc/tree-scalar-evolution.c
@@ -2863,6 +2863,8 @@ scev_analysis (void)
 void
 scev_finalize (void)
 {
+  if (!scalar_evolution_info)
+    return;
   htab_delete (scalar_evolution_info);
   BITMAP_FREE (already_instantiated);
   scalar_evolution_info = NULL;
@@ -2885,7 +2887,7 @@ scev_const_prop (void)
   unsigned i;
   loop_iterator li;
 
-  if (!current_loops)
+  if (number_of_loops () <= 1)
     return 0;
 
   FOR_EACH_BB (bb)