From: Richard Biener <rguenther@suse.de>
Date: Mon, 22 Feb 2021 08:30:49 +0000 (+0100)
Subject: dump SLP subgraph before costing
X-Git-Tag: basepoints/gcc-12~939
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=44841e1788c7c64f7d422768a80036a2a90c677f;p=thirdparty%2Fgcc.git

dump SLP subgraph before costing

This adds another dump of the SLP subgraph we're throwing at costing.

2021-02-22  Richard Biener  <rguenther@suse.de>

	* tree-vect-slp.c (vect_bb_vectorization_profitable_p): Dump
	costed subgraph.
---

diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index ea8a97b01c63..c521c34a83bc 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -4366,6 +4366,15 @@ vect_bb_vectorization_profitable_p (bb_vec_info bb_vinfo,
   unsigned int vec_inside_cost = 0, vec_outside_cost = 0, scalar_cost = 0;
   unsigned int vec_prologue_cost = 0, vec_epilogue_cost = 0;
 
+  if (dump_enabled_p ())
+    {
+      dump_printf_loc (MSG_NOTE, vect_location, "Costing subgraph: \n");
+      hash_set<slp_tree> visited;
+      FOR_EACH_VEC_ELT (slp_instances, i, instance)
+	vect_print_slp_graph (MSG_NOTE, vect_location,
+			      SLP_INSTANCE_TREE (instance), visited);
+    }
+
   /* Calculate scalar cost and sum the cost for the vector stmts
      previously collected.  */
   stmt_vector_for_cost scalar_costs = vNULL;