From b312cf21afd62b43fbc5034703e2796b0c3c416d Mon Sep 17 00:00:00 2001
From: Richard Biener <rguenther@suse.de>
Date: Thu, 15 Feb 2024 13:41:25 +0100
Subject: [PATCH] tree-optimization/111156 - properly dissolve SLP only groups
The following fixes the omission of failing to look at pattern
stmts when we need to dissolve SLP only groups.
PR tree-optimization/111156
* tree-vect-loop.cc (vect_dissolve_slp_only_groups): Look
at the pattern stmt if any.
---
gcc/tree-vect-loop.cc | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
index 9e26b09504df..5a5865c42fc6 100644
--- a/gcc/tree-vect-loop.cc
+++ b/gcc/tree-vect-loop.cc
@@ -2551,7 +2551,8 @@ vect_dissolve_slp_only_groups (loop_vec_info loop_vinfo)
FOR_EACH_VEC_ELT (datarefs, i, dr)
{
gcc_assert (DR_REF (dr));
- stmt_vec_info stmt_info = loop_vinfo->lookup_stmt (DR_STMT (dr));
+ stmt_vec_info stmt_info
+ = vect_stmt_to_vectorize (loop_vinfo->lookup_stmt (DR_STMT (dr)));
/* Check if the load is a part of an interleaving chain. */
if (STMT_VINFO_GROUPED_ACCESS (stmt_info))
--
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