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target/arm: Implement FPCR.AH semantics for vector FMIN/FMAX

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Implement the FPCR.AH == 1 semantics for vector FMIN/FMAX, by
creating new _ah_ versions of the gvec helpers which invoke the
scalar fmin_ah and fmax_ah helpers on each element.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Peter Maydell 2025-02-01 16:39:28 +00:00
parent 2a734f3fe3
commit d613e44010
3 changed files with 41 additions and 2 deletions
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14
target/arm/tcg/helper-sve.h
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@ -972,6 +972,20 @@ DEF_HELPER_FLAGS_5(gvec_rsqrts_s, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_5(gvec_rsqrts_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmax_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmax_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmax_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmin_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmin_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmin_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_4(sve_faddv_h, TCG_CALL_NO_RWG,
i64, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_4(sve_faddv_s, TCG_CALL_NO_RWG,

21
target/arm/tcg/translate-a64.c
View File

@ -5596,6 +5596,13 @@ static bool do_fp3_vector(DisasContext *s, arg_qrrr_e *a, int data,
FPST_A64_F16 : FPST_A64);
}
static bool do_fp3_vector_2fn(DisasContext *s, arg_qrrr_e *a, int data,
gen_helper_gvec_3_ptr * const fnormal[3],
gen_helper_gvec_3_ptr * const fah[3])
{
return do_fp3_vector(s, a, data, s->fpcr_ah ? fah : fnormal);
}
static bool do_fp3_vector_ah(DisasContext *s, arg_qrrr_e *a, int data,
gen_helper_gvec_3_ptr * const f[3])
{
@ -5636,14 +5643,24 @@ static gen_helper_gvec_3_ptr * const f_vector_fmax[3] = {
gen_helper_gvec_fmax_s,
gen_helper_gvec_fmax_d,
};
TRANS(FMAX_v, do_fp3_vector, a, 0, f_vector_fmax)
static gen_helper_gvec_3_ptr * const f_vector_fmax_ah[3] = {
gen_helper_gvec_ah_fmax_h,
gen_helper_gvec_ah_fmax_s,
gen_helper_gvec_ah_fmax_d,
};
TRANS(FMAX_v, do_fp3_vector_2fn, a, 0, f_vector_fmax, f_vector_fmax_ah)
static gen_helper_gvec_3_ptr * const f_vector_fmin[3] = {
gen_helper_gvec_fmin_h,
gen_helper_gvec_fmin_s,
gen_helper_gvec_fmin_d,
};
TRANS(FMIN_v, do_fp3_vector, a, 0, f_vector_fmin)
static gen_helper_gvec_3_ptr * const f_vector_fmin_ah[3] = {
gen_helper_gvec_ah_fmin_h,
gen_helper_gvec_ah_fmin_s,
gen_helper_gvec_ah_fmin_d,
};
TRANS(FMIN_v, do_fp3_vector_2fn, a, 0, f_vector_fmin, f_vector_fmin_ah)
static gen_helper_gvec_3_ptr * const f_vector_fmaxnm[3] = {
gen_helper_gvec_fmaxnum_h,

8
target/arm/tcg/vec_helper.c
View File

@ -1448,6 +1448,14 @@ DO_3OP(gvec_rsqrts_h, helper_rsqrtsf_f16, float16)
DO_3OP(gvec_rsqrts_s, helper_rsqrtsf_f32, float32)
DO_3OP(gvec_rsqrts_d, helper_rsqrtsf_f64, float64)
DO_3OP(gvec_ah_fmax_h, helper_vfp_ah_maxh, float16)
DO_3OP(gvec_ah_fmax_s, helper_vfp_ah_maxs, float32)
DO_3OP(gvec_ah_fmax_d, helper_vfp_ah_maxd, float64)
DO_3OP(gvec_ah_fmin_h, helper_vfp_ah_minh, float16)
DO_3OP(gvec_ah_fmin_s, helper_vfp_ah_mins, float32)
DO_3OP(gvec_ah_fmin_d, helper_vfp_ah_mind, float64)
#endif
#undef DO_3OP