On Tue, 2025-06-10 at 16:59 +0800, mengqinggang wrote:
> Disable k constraint to avoid generate stx/ldx instructions.
>
> gcc/ChangeLog:
>
> * config/loongarch/constraints.md: Add TARGET_64BIT condition for k.
> ---
> gcc/config/loongarch/constraints.md | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gcc/config/loongarch/constraints.md
> b/gcc/config/loongarch/constraints.md
> index 97a4e4e35d3..86bf1e86806 100644
> --- a/gcc/config/loongarch/constraints.md
> +++ b/gcc/config/loongarch/constraints.md
> @@ -133,7 +133,7 @@ (define_memory_constraint "k"
> "A memory operand whose address is formed by a base register and
> (optionally scaled)
> index register."
> (and (match_code "mem")
> - (match_test "loongarch_base_index_address_p (XEXP (op, 0), mode)")))
> + (match_test "TARGET_64BIT && loongarch_base_index_address_p (XEXP
> (op, 0), mode)")))
IMO it's more natural to do
(and (match_code "mem")
(match_test "TARGET_64BIT")
(match_test "loongarch_base_index_address_p (XEXP (op, 0), mode)")))
>
> (define_constraint "l"
> "A signed 16-bit constant."
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
