Re: [PATCH 2/2] target/arm: Use tcg_gen_gvec_cmpi for compare vs 0

[gaosong]

在 2023/8/31 上午11:09, Richard Henderson 写道:
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   target/arm/tcg/translate.c | 56 ++++++--------------------------------
>   1 file changed, 9 insertions(+), 47 deletions(-)
>
> diff --git a/target/arm/tcg/translate.c b/target/arm/tcg/translate.c
> index 38ad8dd4bd..89a7392ed3 100644
> --- a/target/arm/tcg/translate.c
> +++ b/target/arm/tcg/translate.c

Reviewed-by: Song Gao <gaosong@loongson.cn>

Thanks.
Song Gao

> @@ -2943,54 +2943,16 @@ void gen_gvec_sqrdmlsh_qc(unsigned vece, uint32_t 
> rd_ofs, uint32_t rn_ofs,
>       gen_gvec_fn3_qc(rd_ofs, rn_ofs, rm_ofs, opr_sz, max_sz, fns[vece - 1]);
>   }
>   
> -#define GEN_CMP0(NAME, COND)                                            \
> -    static void gen_##NAME##0_i32(TCGv_i32 d, TCGv_i32 a)               \
> -    {                                                                   \
> -        tcg_gen_negsetcond_i32(COND, d, a, tcg_constant_i32(0));        \
> -    }                                                                   \
> -    static void gen_##NAME##0_i64(TCGv_i64 d, TCGv_i64 a)               \
> -    {                                                                   \
> -        tcg_gen_negsetcond_i64(COND, d, a, tcg_constant_i64(0));        \
> -    }                                                                   \
> -    static void gen_##NAME##0_vec(unsigned vece, TCGv_vec d, TCGv_vec a) \
> -    {                                                                   \
> -        TCGv_vec zero = tcg_constant_vec_matching(d, vece, 0);          \
> -        tcg_gen_cmp_vec(COND, vece, d, a, zero);                        \
> -    }                                                                   \
> -    void gen_gvec_##NAME##0(unsigned vece, uint32_t d, uint32_t m,      \
> -                            uint32_t opr_sz, uint32_t max_sz)           \
> -    {                                                                   \
> -        const GVecGen2 op[4] = {                                        \
> -            { .fno = gen_helper_gvec_##NAME##0_b,                       \
> -              .fniv = gen_##NAME##0_vec,                                \
> -              .opt_opc = vecop_list_cmp,                                \
> -              .vece = MO_8 },                                           \
> -            { .fno = gen_helper_gvec_##NAME##0_h,                       \
> -              .fniv = gen_##NAME##0_vec,                                \
> -              .opt_opc = vecop_list_cmp,                                \
> -              .vece = MO_16 },                                          \
> -            { .fni4 = gen_##NAME##0_i32,                                \
> -              .fniv = gen_##NAME##0_vec,                                \
> -              .opt_opc = vecop_list_cmp,                                \
> -              .vece = MO_32 },                                          \
> -            { .fni8 = gen_##NAME##0_i64,                                \
> -              .fniv = gen_##NAME##0_vec,                                \
> -              .opt_opc = vecop_list_cmp,                                \
> -              .prefer_i64 = TCG_TARGET_REG_BITS == 64,                  \
> -              .vece = MO_64 },                                          \
> -        };                                                              \
> -        tcg_gen_gvec_2(d, m, opr_sz, max_sz, &op[vece]);                \
> -    }
> +#define GEN_CMP0(NAME, COND)                              \
> +    void NAME(unsigned vece, uint32_t d, uint32_t m,      \
> +              uint32_t opr_sz, uint32_t max_sz)           \
> +    { tcg_gen_gvec_cmpi(COND, vece, d, m, 0, opr_sz, max_sz); }
>   
> -static const TCGOpcode vecop_list_cmp[] = {
> -    INDEX_op_cmp_vec, 0
> -};
> -
> -GEN_CMP0(ceq, TCG_COND_EQ)
> -GEN_CMP0(cle, TCG_COND_LE)
> -GEN_CMP0(cge, TCG_COND_GE)
> -GEN_CMP0(clt, TCG_COND_LT)
> -GEN_CMP0(cgt, TCG_COND_GT)
> +GEN_CMP0(gen_gvec_ceq0, TCG_COND_EQ)
> +GEN_CMP0(gen_gvec_cle0, TCG_COND_LE)
> +GEN_CMP0(gen_gvec_cge0, TCG_COND_GE)
> +GEN_CMP0(gen_gvec_clt0, TCG_COND_LT)
> +GEN_CMP0(gen_gvec_cgt0, TCG_COND_GT)
>   
>   #undef GEN_CMP0
>