On 11/17/2017 08:33 AM, Richard Sandiford wrote:
> This allows LD3 to be used for isolated a[i * 3] accesses, in a similar
> way to the current a[i * 2] and a[i * 4] for LD2 and LD4 respectively.
> Given the problems with the cost model underestimating the cost of
> elementwise accesses, the patch continues to reject the VMAT_ELEMENTWISE
> cases that are currently rejected.
>
> Tested on aarch64-linux-gnu (with and without SVE), x86_64-linux-gnu
> and powerpc64le-linux-gnu. OK to install?
>
> Richard
>
>
> 2017-11-17 Richard Sandiford <richard.sandif...@linaro.org>
> Alan Hayward <alan.hayw...@arm.com>
> David Sherwood <david.sherw...@arm.com>
>
> gcc/
> * tree-vect-data-refs.c (vect_analyze_group_access_1): Allow
> single-element interleaving even if the size is not a power of 2.
> * tree-vect-stmts.c (get_load_store_type): Disallow elementwise
> accesses for single-element interleaving if the group size is
> not a power of 2.
>
> gcc/testsuite/
> * gcc.target/aarch64/sve_struct_vect_18.c: New test.
> * gcc.target/aarch64/sve_struct_vect_18_run.c: Likewise.
> * gcc.target/aarch64/sve_struct_vect_19.c: Likewise.
> * gcc.target/aarch64/sve_struct_vect_19_run.c: Likewise.
OK.
jeff
