tree-core.h (enum tree_index): Add TI_CHREC_DONT_KNOW and TI_CHREC_KNOWN.

2019-07-02  Richard Biener  <rguenther@suse.de>

	* tree-core.h (enum tree_index): Add TI_CHREC_DONT_KNOW and
	TI_CHREC_KNOWN.
	* tree.h (chrec_not_analyzed_yet, chrec_dont_know, chrec_known):
	Define here.
	* tree.c (build_common_tree_nodes): Initialize them.
	* tree-chrec.h (chrec_not_analyzed_yet, chrec_dont_know, chrec_known):
	Make declarations comments.
	* tree-scalar-evolution.c (chrec_not_analyzed_yet, chrec_dont_know,
	chrec_known): Remove definitions.
	(initialize_scalar_evolutions_analyzer): Remove.
	(scev_initialize): Do not call initialize_scalar_evolutions_analyzer.
	* tree-streamer.c (preload_common_nodes): Do not preload
	TI_CHREC_DONT_KNOW or TI_CHREC_KNOWN.

From-SVN: r272928

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/tree.c b/gcc/tree.c
index 3491258..f2c779f 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -10641,6 +10641,12 @@ build_common_tree_nodes (bool signed_char)
 
     va_list_type_node = t;
   }
+
+  /* SCEV analyzer global shared trees.  */
+  chrec_dont_know = make_node (SCEV_NOT_KNOWN);
+  TREE_TYPE (chrec_dont_know) = void_type_node;
+  chrec_known = make_node (SCEV_KNOWN);
+  TREE_TYPE (chrec_known) = void_type_node;
 }
 
 /* Modify DECL for given flags.