On Tue, 2023-11-28 at 15:39 +0800, Li Wei wrote:
> For vector constant extract-{even/odd} permutation replace the default
> [x]vshuf instruction combination with [x]vilv{l/h} instruction, which
> can reduce instructions and improves performance.
>
> gcc/ChangeLog:
>
> * config/loongarch/loongarch.cc
> (loongarch_is_odd_extraction):
> Supplementary function prototype.
^^
These two white spaces should be removed. And I'd suggest "New forward
declaration".
Otherwise LGTM.
> (loongarch_is_even_extraction): Adjust.
> (loongarch_try_expand_lsx_vshuf_const): Adjust.
> (loongarch_is_extraction_permutation): Adjust.
> (loongarch_expand_vec_perm_const_2): Adjust.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/loongarch/lasx-extract-even_odd-opt.c: New test.
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
