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target/riscv: vector floating-point classify instructions

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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200701152549.1218-41-zhiwei_liu@c-sky.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
LIU Zhiwei 2020-07-01 23:25:28 +08:00 committed by Alistair Francis
parent 2a68e9e568
commit 121ddbb36f
6 changed files with 107 additions and 30 deletions
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33
target/riscv/fpu_helper.c
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@ -22,6 +22,7 @@
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "fpu/softfloat.h"
#include "internals.h"
target_ulong riscv_cpu_get_fflags(CPURISCVState *env)
{
@ -230,21 +231,7 @@ uint64_t helper_fcvt_s_lu(CPURISCVState *env, uint64_t rs1)
target_ulong helper_fclass_s(uint64_t frs1)
{
float32 f = frs1;
bool sign = float32_is_neg(f);
if (float32_is_infinity(f)) {
return sign ? 1 << 0 : 1 << 7;
} else if (float32_is_zero(f)) {
return sign ? 1 << 3 : 1 << 4;
} else if (float32_is_zero_or_denormal(f)) {
return sign ? 1 << 2 : 1 << 5;
} else if (float32_is_any_nan(f)) {
float_status s = { }; /* for snan_bit_is_one */
return float32_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
} else {
return sign ? 1 << 1 : 1 << 6;
}
return fclass_s(frs1);
}
uint64_t helper_fadd_d(CPURISCVState *env, uint64_t frs1, uint64_t frs2)
@ -353,19 +340,5 @@ uint64_t helper_fcvt_d_lu(CPURISCVState *env, uint64_t rs1)
target_ulong helper_fclass_d(uint64_t frs1)
{
float64 f = frs1;
bool sign = float64_is_neg(f);
if (float64_is_infinity(f)) {
return sign ? 1 << 0 : 1 << 7;
} else if (float64_is_zero(f)) {
return sign ? 1 << 3 : 1 << 4;
} else if (float64_is_zero_or_denormal(f)) {
return sign ? 1 << 2 : 1 << 5;
} else if (float64_is_any_nan(f)) {
float_status s = { }; /* for snan_bit_is_one */
return float64_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
} else {
return sign ? 1 << 1 : 1 << 6;
}
return fclass_d(frs1);
}

4
target/riscv/helper.h
View File

@ -996,3 +996,7 @@ DEF_HELPER_6(vmford_vv_d, void, ptr, ptr, ptr, ptr, env, i32)
DEF_HELPER_6(vmford_vf_h, void, ptr, ptr, i64, ptr, env, i32)
DEF_HELPER_6(vmford_vf_w, void, ptr, ptr, i64, ptr, env, i32)
DEF_HELPER_6(vmford_vf_d, void, ptr, ptr, i64, ptr, env, i32)
DEF_HELPER_5(vfclass_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfclass_v_w, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfclass_v_d, void, ptr, ptr, ptr, env, i32)

1
target/riscv/insn32.decode
View File

@ -514,6 +514,7 @@ vmfgt_vf 011101 . ..... ..... 101 ..... 1010111 @r_vm
vmfge_vf 011111 . ..... ..... 101 ..... 1010111 @r_vm
vmford_vv 011010 . ..... ..... 001 ..... 1010111 @r_vm
vmford_vf 011010 . ..... ..... 101 ..... 1010111 @r_vm
vfclass_v 100011 . ..... 10000 001 ..... 1010111 @r2_vm
vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm
vsetvl 1000000 ..... ..... 111 ..... 1010111 @r

3
target/riscv/insn_trans/trans_rvv.inc.c
View File

@ -2181,3 +2181,6 @@ GEN_OPFVF_TRANS(vmfle_vf, opfvf_cmp_check)
GEN_OPFVF_TRANS(vmfgt_vf, opfvf_cmp_check)
GEN_OPFVF_TRANS(vmfge_vf, opfvf_cmp_check)
GEN_OPFVF_TRANS(vmford_vf, opfvf_cmp_check)
/* Vector Floating-Point Classify Instruction */
GEN_OPFV_TRANS(vfclass_v, opfv_check)

5
target/riscv/internals.h
View File

@ -27,4 +27,9 @@ FIELD(VDATA, VM, 8, 1)
FIELD(VDATA, LMUL, 9, 2)
FIELD(VDATA, NF, 11, 4)
FIELD(VDATA, WD, 11, 1)
/* float point classify helpers */
target_ulong fclass_h(uint64_t frs1);
target_ulong fclass_s(uint64_t frs1);
target_ulong fclass_d(uint64_t frs1);
#endif

91
target/riscv/vector_helper.c
View File

@ -4103,3 +4103,94 @@ GEN_VEXT_CMP_VV_ENV(vmford_vv_d, uint64_t, H8, !float64_unordered_quiet)
GEN_VEXT_CMP_VF(vmford_vf_h, uint16_t, H2, !float16_unordered_quiet)
GEN_VEXT_CMP_VF(vmford_vf_w, uint32_t, H4, !float32_unordered_quiet)
GEN_VEXT_CMP_VF(vmford_vf_d, uint64_t, H8, !float64_unordered_quiet)
/* Vector Floating-Point Classify Instruction */
#define OPIVV1(NAME, TD, T2, TX2, HD, HS2, OP) \
static void do_##NAME(void *vd, void *vs2, int i) \
{ \
TX2 s2 = *((T2 *)vs2 + HS2(i)); \
*((TD *)vd + HD(i)) = OP(s2); \
}
#define GEN_VEXT_V(NAME, ESZ, DSZ, CLEAR_FN) \
void HELPER(NAME)(void *vd, void *v0, void *vs2, \
CPURISCVState *env, uint32_t desc) \
{ \
uint32_t vlmax = vext_maxsz(desc) / ESZ; \
uint32_t mlen = vext_mlen(desc); \
uint32_t vm = vext_vm(desc); \
uint32_t vl = env->vl; \
uint32_t i; \
\
for (i = 0; i < vl; i++) { \
if (!vm && !vext_elem_mask(v0, mlen, i)) { \
continue; \
} \
do_##NAME(vd, vs2, i); \
} \
CLEAR_FN(vd, vl, vl * DSZ, vlmax * DSZ); \
}
target_ulong fclass_h(uint64_t frs1)
{
float16 f = frs1;
bool sign = float16_is_neg(f);
if (float16_is_infinity(f)) {
return sign ? 1 << 0 : 1 << 7;
} else if (float16_is_zero(f)) {
return sign ? 1 << 3 : 1 << 4;
} else if (float16_is_zero_or_denormal(f)) {
return sign ? 1 << 2 : 1 << 5;
} else if (float16_is_any_nan(f)) {
float_status s = { }; /* for snan_bit_is_one */
return float16_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
} else {
return sign ? 1 << 1 : 1 << 6;
}
}
target_ulong fclass_s(uint64_t frs1)
{
float32 f = frs1;
bool sign = float32_is_neg(f);
if (float32_is_infinity(f)) {
return sign ? 1 << 0 : 1 << 7;
} else if (float32_is_zero(f)) {
return sign ? 1 << 3 : 1 << 4;
} else if (float32_is_zero_or_denormal(f)) {
return sign ? 1 << 2 : 1 << 5;
} else if (float32_is_any_nan(f)) {
float_status s = { }; /* for snan_bit_is_one */
return float32_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
} else {
return sign ? 1 << 1 : 1 << 6;
}
}
target_ulong fclass_d(uint64_t frs1)
{
float64 f = frs1;
bool sign = float64_is_neg(f);
if (float64_is_infinity(f)) {
return sign ? 1 << 0 : 1 << 7;
} else if (float64_is_zero(f)) {
return sign ? 1 << 3 : 1 << 4;
} else if (float64_is_zero_or_denormal(f)) {
return sign ? 1 << 2 : 1 << 5;
} else if (float64_is_any_nan(f)) {
float_status s = { }; /* for snan_bit_is_one */
return float64_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
} else {
return sign ? 1 << 1 : 1 << 6;
}
}
RVVCALL(OPIVV1, vfclass_v_h, OP_UU_H, H2, H2, fclass_h)
RVVCALL(OPIVV1, vfclass_v_w, OP_UU_W, H4, H4, fclass_s)
RVVCALL(OPIVV1, vfclass_v_d, OP_UU_D, H8, H8, fclass_d)
GEN_VEXT_V(vfclass_v_h, 2, 2, clearh)
GEN_VEXT_V(vfclass_v_w, 4, 4, clearl)
GEN_VEXT_V(vfclass_v_d, 8, 8, clearq)