On Fri, Sep 18, 2020 at 01:39:16PM +0200, Richard Biener wrote:
> --- a/gcc/tree-vect-patterns.c
> +++ b/gcc/tree-vect-patterns.c
> @@ -2456,7 +2456,6 @@ vect_recog_rotate_pattern (vec_info *vinfo,
>append_pattern_def_seq (vinfo, stmt_vinfo, def_stmt);
> }
>stype = TREE_TYPE (def);
On Fri, Sep 18, 2020 at 01:39:16PM +0200, Richard Biener wrote:
> This corrects the mask for creation of x << s | x >> (-x & mask)
> from a rotate x <
> Bootstrap / regtest running on x86_64-unknown-linux-gnu.
>
> 2020-09-18 Richard Biener
>
> PR tree-optimization/97081
> * tree-v
This corrects the mask for creation of x << s | x >> (-x & mask)
from a rotate x <
PR tree-optimization/97081
* tree-vect-patterns.c (vect_recog_rotate_pattern): Use the
precision of the shifted operand to determine the mask.
* gcc.dg/vect/pr97081.c: New testcase.
