From: Richard Biener <rguenther@suse.de>
Date: Mon, 6 Jul 2026 07:26:22 +0000 (+0200)
Subject: Make SLP discovery more verbose
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d0271c4f45e06008d203ae794d386e36872e41c;p=thirdparty%2Fgcc.git

Make SLP discovery more verbose

The following dumps the first root stmt when analyzing a BB reduction.

	* tree-vect-slp.cc (vect_build_slp_instance): For BB reductions
	note the first root stmt.
---

diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc
index 6081948fed4..5fd9c8da89e 100644
--- a/gcc/tree-vect-slp.cc
+++ b/gcc/tree-vect-slp.cc
@@ -4213,6 +4213,13 @@ vect_build_slp_instance (vec_info *vinfo,
 			 "Analyzing vectorizable control flow: %G",
 			 root_stmt_infos[0]->stmt);
     }
+  else if (kind == slp_inst_kind_bb_reduc)
+    {
+      if (dump_enabled_p ())
+	dump_printf_loc (MSG_NOTE, vect_location,
+			 "Analyzing vectorizable BB reduction: %G",
+			 root_stmt_infos[0]->stmt);
+    }
 
   if (dump_enabled_p ())
     {