From: Richard Biener <rguenther@suse.de>
Date: Wed, 11 Aug 2021 09:49:10 +0000 (+0200)
Subject: tree-optimization/101861 - fix gather use for non-gather refs
X-Git-Tag: upstream/12.2.0~5848
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f19c70afa4aa2416c581484a6eb51c0ac46acd08;p=platform%2Fupstream%2Fgcc.git

tree-optimization/101861 - fix gather use for non-gather refs

My previous change broke the usage of gather for strided loads.
The following fixes it.

2021-08-11  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/101861
	* tree-vect-stmts.c (vectorizable_load): Fix error in
	previous change with regard to gather vectorization.
---

diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index ab402b5..cc6c091 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -9492,7 +9492,8 @@ vectorizable_load (vec_info *vinfo,
 		    if (memory_access_type == VMAT_GATHER_SCATTER
 			&& gs_info.ifn != IFN_LAST)
 		      {
-			vec_offset = vec_offsets[j];
+			if (STMT_VINFO_GATHER_SCATTER_P (stmt_info))
+			  vec_offset = vec_offsets[j];
 			tree zero = build_zero_cst (vectype);
 			tree scale = size_int (gs_info.scale);
 			gcall *call;