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target/arm: Implement FPCR.AH semantics for FMINP and FMAXP

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Implement the FPCR.AH semantics for the pairwise floating
point minimum/maximum insns FMINP and FMAXP.

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 16:39:30 +00:00
parent bb9330b662
commit 384433e709
3 changed files with 45 additions and 4 deletions
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14
target/arm/tcg/helper-sve.h
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@ -986,6 +986,20 @@ DEF_HELPER_FLAGS_5(gvec_ah_fmin_s, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_5(gvec_ah_fmin_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmaxp_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmaxp_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fmaxp_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fminp_h, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fminp_s, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, fpst, i32)
DEF_HELPER_FLAGS_5(gvec_ah_fminp_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,

25
target/arm/tcg/translate-a64.c
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@ -5765,14 +5765,24 @@ static gen_helper_gvec_3_ptr * const f_vector_fmaxp[3] = {
gen_helper_gvec_fmaxp_s,
gen_helper_gvec_fmaxp_d,
};
TRANS(FMAXP_v, do_fp3_vector, a, 0, f_vector_fmaxp)
static gen_helper_gvec_3_ptr * const f_vector_ah_fmaxp[3] = {
gen_helper_gvec_ah_fmaxp_h,
gen_helper_gvec_ah_fmaxp_s,
gen_helper_gvec_ah_fmaxp_d,
};
TRANS(FMAXP_v, do_fp3_vector_2fn, a, 0, f_vector_fmaxp, f_vector_ah_fmaxp)
static gen_helper_gvec_3_ptr * const f_vector_fminp[3] = {
gen_helper_gvec_fminp_h,
gen_helper_gvec_fminp_s,
gen_helper_gvec_fminp_d,
};
TRANS(FMINP_v, do_fp3_vector, a, 0, f_vector_fminp)
static gen_helper_gvec_3_ptr * const f_vector_ah_fminp[3] = {
gen_helper_gvec_ah_fminp_h,
gen_helper_gvec_ah_fminp_s,
gen_helper_gvec_ah_fminp_d,
};
TRANS(FMINP_v, do_fp3_vector_2fn, a, 0, f_vector_fminp, f_vector_ah_fminp)
static gen_helper_gvec_3_ptr * const f_vector_fmaxnmp[3] = {
gen_helper_gvec_fmaxnump_h,
@ -6764,9 +6774,16 @@ static bool do_fp3_scalar_pair(DisasContext *s, arg_rr_e *a, const FPScalar *f)
return true;
}
static bool do_fp3_scalar_pair_2fn(DisasContext *s, arg_rr_e *a,
const FPScalar *fnormal,
const FPScalar *fah)
{
return do_fp3_scalar_pair(s, a, s->fpcr_ah ? fah : fnormal);
}
TRANS(FADDP_s, do_fp3_scalar_pair, a, &f_scalar_fadd)
TRANS(FMAXP_s, do_fp3_scalar_pair, a, &f_scalar_fmax)
TRANS(FMINP_s, do_fp3_scalar_pair, a, &f_scalar_fmin)
TRANS(FMAXP_s, do_fp3_scalar_pair_2fn, a, &f_scalar_fmax, &f_scalar_fmax_ah)
TRANS(FMINP_s, do_fp3_scalar_pair_2fn, a, &f_scalar_fmin, &f_scalar_fmin_ah)
TRANS(FMAXNMP_s, do_fp3_scalar_pair, a, &f_scalar_fmaxnm)
TRANS(FMINNMP_s, do_fp3_scalar_pair, a, &f_scalar_fminnm)

10
target/arm/tcg/vec_helper.c
View File

@ -2444,6 +2444,16 @@ DO_3OP_PAIR(gvec_fminnump_h, float16_minnum, float16, H2)
DO_3OP_PAIR(gvec_fminnump_s, float32_minnum, float32, H4)
DO_3OP_PAIR(gvec_fminnump_d, float64_minnum, float64, )
#ifdef TARGET_AARCH64
DO_3OP_PAIR(gvec_ah_fmaxp_h, helper_vfp_ah_maxh, float16, H2)
DO_3OP_PAIR(gvec_ah_fmaxp_s, helper_vfp_ah_maxs, float32, H4)
DO_3OP_PAIR(gvec_ah_fmaxp_d, helper_vfp_ah_maxd, float64, )
DO_3OP_PAIR(gvec_ah_fminp_h, helper_vfp_ah_minh, float16, H2)
DO_3OP_PAIR(gvec_ah_fminp_s, helper_vfp_ah_mins, float32, H4)
DO_3OP_PAIR(gvec_ah_fminp_d, helper_vfp_ah_mind, float64, )
#endif
#undef DO_3OP_PAIR
#define DO_3OP_PAIR(NAME, FUNC, TYPE, H) \