Re: [PATCH] C-SKY: Add insn "ldbs".

[Cooper Qu <cooper.qu@linux.alibaba.com>]

merged.

On 5/25/21 6:45 PM, Geng Qi wrote:
> gcc/
> 	* config/csky/csky.md (cskyv2_sextend_ldbs): New insn.
>
> gcc/testsuite/
> 	* gcc/testsuite/gcc.target/csky/ldbs.c: New.
> ---
>   gcc/config/csky/csky.md              | 10 ++++++++++
>   gcc/testsuite/gcc.target/csky/ldbs.c | 11 +++++++++++
>   2 files changed, 21 insertions(+)
>   create mode 100644 gcc/testsuite/gcc.target/csky/ldbs.c
>
> diff --git a/gcc/config/csky/csky.md b/gcc/config/csky/csky.md
> index c27d627..b980d4c 100644
> --- a/gcc/config/csky/csky.md
> +++ b/gcc/config/csky/csky.md
> @@ -1533,6 +1533,7 @@
>     }"
>   )
>   
> +;; hi -> si
>   (define_insn "extendhisi2"
>     [(set (match_operand:SI		  0 "register_operand" "=r")
>   	(sign_extend:SI (match_operand:HI 1 "register_operand" "r")))]
> @@ -1557,6 +1558,15 @@
>     "sextb  %0, %1"
>   )
>   
> +(define_insn "*cskyv2_sextend_ldbs"
> +  [(set (match_operand:SI		  0 "register_operand" "=r")
> +        (sign_extend:SI (match_operand:QI 1 "csky_simple_mem_operand" "m")))]
> +  "CSKY_ISA_FEATURE (E2)"
> +  "ld.bs\t%0, %1"
> +  [(set_attr "length" "4")
> +   (set_attr "type" "load")]
> +)
> +
>   ;; qi -> hi
>   (define_insn "extendqihi2"
>     [(set (match_operand:HI		  0 "register_operand" "=r")
> diff --git a/gcc/testsuite/gcc.target/csky/ldbs.c b/gcc/testsuite/gcc.target/csky/ldbs.c
> new file mode 100644
> index 0000000..27a0254
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/csky/ldbs.c
> @@ -0,0 +1,11 @@
> +/* { dg-do compile } */
> +/* { dg-skip-if "" { *-*-* } { "-mcpu=ck801" "-march=ck801" } { "*" } } */
> +/* { dg-csky-options "-O1" } */
> +
> +int foo (signed char *pb)
> +{
> +  return *pb;
> +}
> +
> +/* { dg-final { scan-assembler "ld.bs" } } */
> +