Commit 3887c038 authored by Richard Henderson's avatar Richard Henderson Committed by Peter Maydell
Browse files

target/arm: Implement SVE Floating Point Unary Operations - Unpredicated Group 



Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Message-id: 20180627043328.11531-21-richard.henderson@linaro.org
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent 23fbe79f

target/arm/helper.h

+8 −0
Original line number Diff line number Diff line
@@ -601,6 +601,14 @@ DEF_HELPER_FLAGS_5(gvec_fcmlas_idx, TCG_CALL_NO_RWG, 
DEF_HELPER_FLAGS_5(gvec_fcmlad, TCG_CALL_NO_RWG,

                   void, ptr, ptr, ptr, ptr, i32)



DEF_HELPER_FLAGS_4(gvec_frecpe_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)

DEF_HELPER_FLAGS_4(gvec_frecpe_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)

DEF_HELPER_FLAGS_4(gvec_frecpe_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)



DEF_HELPER_FLAGS_4(gvec_frsqrte_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)

DEF_HELPER_FLAGS_4(gvec_frsqrte_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)

DEF_HELPER_FLAGS_4(gvec_frsqrte_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, i32)



DEF_HELPER_FLAGS_5(gvec_fadd_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)

DEF_HELPER_FLAGS_5(gvec_fadd_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)

DEF_HELPER_FLAGS_5(gvec_fadd_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32)

target/arm/sve.decode

+5 −0
Original line number Diff line number Diff line
@@ -743,6 +743,11 @@ FMINNMV 01100101 .. 000 101 001 ... ..... ..... @rd_pg_rn 
FMAXV           01100101 .. 000 110 001 ... ..... .....         @rd_pg_rn

FMINV           01100101 .. 000 111 001 ... ..... .....         @rd_pg_rn



## SVE Floating Point Unary Operations - Unpredicated Group



FRECPE          01100101 .. 001 110 001100 ..... .....          @rd_rn

FRSQRTE         01100101 .. 001 111 001100 ..... .....          @rd_rn



### SVE FP Accumulating Reduction Group



# SVE floating-point serial reduction (predicated)

target/arm/translate-sve.c

+47 −0
Original line number Diff line number Diff line
@@ -3507,6 +3507,53 @@ DO_VPZ(FMAXNMV, fmaxnmv) 
DO_VPZ(FMINV, fminv)

DO_VPZ(FMAXV, fmaxv)



/*

 *** SVE Floating Point Unary Operations - Unpredicated Group

 */



static void do_zz_fp(DisasContext *s, arg_rr_esz *a, gen_helper_gvec_2_ptr *fn)

{

    unsigned vsz = vec_full_reg_size(s);

    TCGv_ptr status = get_fpstatus_ptr(a->esz == MO_16);



    tcg_gen_gvec_2_ptr(vec_full_reg_offset(s, a->rd),

                       vec_full_reg_offset(s, a->rn),

                       status, vsz, vsz, 0, fn);

    tcg_temp_free_ptr(status);

}



static bool trans_FRECPE(DisasContext *s, arg_rr_esz *a, uint32_t insn)

{

    static gen_helper_gvec_2_ptr * const fns[3] = {

        gen_helper_gvec_frecpe_h,

        gen_helper_gvec_frecpe_s,

        gen_helper_gvec_frecpe_d,

    };

    if (a->esz == 0) {

        return false;

    }

    if (sve_access_check(s)) {

        do_zz_fp(s, a, fns[a->esz - 1]);

    }

    return true;

}



static bool trans_FRSQRTE(DisasContext *s, arg_rr_esz *a, uint32_t insn)

{

    static gen_helper_gvec_2_ptr * const fns[3] = {

        gen_helper_gvec_frsqrte_h,

        gen_helper_gvec_frsqrte_s,

        gen_helper_gvec_frsqrte_d,

    };

    if (a->esz == 0) {

        return false;

    }

    if (sve_access_check(s)) {

        do_zz_fp(s, a, fns[a->esz - 1]);

    }

    return true;

}



/*

 *** SVE Floating Point Accumulating Reduction Group

 */

target/arm/vec_helper.c

+20 −0
Original line number Diff line number Diff line
@@ -427,6 +427,26 @@ void HELPER(gvec_fcmlad)(void *vd, void *vn, void *vm, 
    clear_tail(d, opr_sz, simd_maxsz(desc));

}



#define DO_2OP(NAME, FUNC, TYPE) \

void HELPER(NAME)(void *vd, void *vn, void *stat, uint32_t desc)  \

{                                                                 \

    intptr_t i, oprsz = simd_oprsz(desc);                         \

    TYPE *d = vd, *n = vn;                                        \

    for (i = 0; i < oprsz / sizeof(TYPE); i++) {                  \

        d[i] = FUNC(n[i], stat);                                  \

    }                                                             \

}



DO_2OP(gvec_frecpe_h, helper_recpe_f16, float16)

DO_2OP(gvec_frecpe_s, helper_recpe_f32, float32)

DO_2OP(gvec_frecpe_d, helper_recpe_f64, float64)



DO_2OP(gvec_frsqrte_h, helper_rsqrte_f16, float16)

DO_2OP(gvec_frsqrte_s, helper_rsqrte_f32, float32)

DO_2OP(gvec_frsqrte_d, helper_rsqrte_f64, float64)



#undef DO_2OP



/* Floating-point trigonometric starting value.

 * See the ARM ARM pseudocode function FPTrigSMul.

 */