From: Richard Biener <rguenther@suse.de>
Date: Wed, 28 Oct 2020 15:31:06 +0000 (+0100)
Subject: dump when SLP analysis fails due to shared vectype mismatch
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f4af2dde57992ae0d60a2077f4f0024327b8e6d5;p=gcc.git

dump when SLP analysis fails due to shared vectype mismatch

This adds another one.

2020-10-28  Richard Biener  <rguenther@suse.de>

	* tree-vect-slp.c (vect_slp_analyze_node_operations_1): Dump
	when shared vectype update fails.
---

diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index c98f747d4a9..ff3a0c2fd8e 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -3371,7 +3371,13 @@ vect_slp_analyze_node_operations_1 (vec_info *vinfo, slp_tree node,
 
   if (is_a <bb_vec_info> (vinfo)
       && !vect_update_shared_vectype (stmt_info, SLP_TREE_VECTYPE (node)))
-    return false;
+    {
+      if (dump_enabled_p ())
+	dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
+			 "desired vector type conflicts with earlier one "
+			 "for %G", stmt_info->stmt);
+      return false;
+    }
 
   bool dummy;
   return vect_analyze_stmt (vinfo, stmt_info, &dummy,