> +}
> diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc
> index ca6052662a3..840e162c7f0 100644
> --- a/gcc/tree-vect-stmts.cc
> +++ b/gcc/tree-vect-stmts.cc
> @@ -6247,7 +6247,7 @@ vectorizable_shift (vec_info *vinfo,
>if ((dt[1] == vect_internal_def
> || dt[1] == vect_induction_def
>
LP_TREE_LANES (slp_node) == 1))
scalar_shift_arg = false;
else if (dt[1] == vect_constant_def
|| dt[1] == vect_external_def
--
2.17.1
From: Richard Biener
Sent: Thursday, June 27, 2024 12:49 AM
To: Feng Xue OS
Cc: gcc-patches@gcc.gnu.org
S
On Wed, Jun 26, 2024 at 4:58 PM Feng Xue OS wrote:
>
> Allow shift-by-induction for slp node, when it is single lane, which is
> aligned with the original loop-based handling.
OK.
Did you try whether we handle multiple lanes correctly? The simplest
case would be a loop
body with say
a[2*i] =
Allow shift-by-induction for slp node, when it is single lane, which is
aligned with the original loop-based handling.
Thanks,
Feng
---
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 ca6052662a3..8
Allow shift-by-induction for slp node, when it is single lane, which is
aligned with the original loop-based handling.
Thanks,
Feng
---
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 ca6052662a3..8
