diff mbox series

[3/4] Fix SLP of emulated gathers

Message ID 20231108150324.E6D3A133F5@imap2.suse-dmz.suse.de
State New
Headers show
Series [1/4] Fix SLP of masked loads | expand

Commit Message

Richard Biener Nov. 8, 2023, 3:03 p.m. UTC 
The following fixes an error in the SLP of emulated gathers,
discovered by x86 specific tests when enabling single-lane SLP.

Bootstrap and regtest running on x86_64-unknown-linux-gnu.

	* tree-vect-stmts.cc (vectorizable_load): Adjust offset
	vector gathering for SLP of emulated gathers.
---
 gcc/tree-vect-stmts.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
index 61e23b29516..913a4fb08ed 100644
--- a/gcc/tree-vect-stmts.cc
+++ b/gcc/tree-vect-stmts.cc
@@ -11163,7 +11163,7 @@  vectorizable_load (vec_info *vinfo,
 		     than the data vector for now.  */
 		  unsigned HOST_WIDE_INT factor
 		    = const_offset_nunits / const_nunits;
-		  vec_offset = vec_offsets[j / factor];
+		  vec_offset = vec_offsets[(vec_num * j + i) / factor];
 		  unsigned elt_offset = (j % factor) * const_nunits;
 		  tree idx_type = TREE_TYPE (TREE_TYPE (vec_offset));
 		  tree scale = size_int (gs_info.scale);