From: Richard Biener <rguenther@suse.de>
Date: Thu, 8 Jan 2026 08:32:19 +0000 (+0100)
Subject: More verbose dumping on missed vector optabs
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84257032ef468f51b5105098d1cc2a1400e79944;p=thirdparty%2Fgcc.git

More verbose dumping on missed vector optabs

The following changes 'no optab' to mention which tree code and
vector type we were looking for and adds 'shift' to the instances
of this message emitted from vectorizable_shift.

	* tree-vect-stmts.cc (vectorizable_shift): Improve missing
	optab or optab support messages.
	(vectorizable_operation): Likewise.
---

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 8086d4c35c9..a563238c4be 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -6348,7 +6348,8 @@ vectorizable_shift (vec_info *vinfo,
     {
       if (dump_enabled_p ())
         dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-                         "no optab.\n");
+			 "no shift optab for %s and %T.\n",
+			 get_tree_code_name (code), vectype);
       return false;
     }
   vec_mode = TYPE_MODE (vectype);
@@ -6357,7 +6358,7 @@ vectorizable_shift (vec_info *vinfo,
     {
       if (dump_enabled_p ())
         dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-                         "op not supported by target.\n");
+			 "shift op not supported by target.\n");
       return false;
     }
   /* vector lowering cannot optimize vector shifts using word arithmetic.  */
@@ -6723,7 +6724,8 @@ vectorizable_operation (vec_info *vinfo,
     {
       if (dump_enabled_p ())
 	dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
-			 "no optab.\n");
+			 "no optab for %s and %T.\n",
+			 get_tree_code_name (code), vectype);
       return false;
     }
   target_support_p = can_implement_p (optab, vec_mode);