From 39d81b667373b0033f44702a4b532a4618dde9ff Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Wed, 8 Nov 2023 15:42:16 +0100 Subject: [PATCH] Fix SLP of emulated gathers The following fixes an error in the SLP of emulated gathers, discovered by x86 specific tests when enabling single-lane SLP. * 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 --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); -- 2.11.4.GIT