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target/riscv: widening floating-point/integer type-convert instructions

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Backports 4514b7b12390525e59e335e7ca58fd44f6e69272
This commit is contained in:
LIU Zhiwei 2021-03-07 12:02:54 -05:00 committed by Lioncash
parent 8b06759ba4
commit 0c80c49b1b
7 changed files with 137 additions and 0 deletions
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10
qemu/header_gen.py
View file

@ -7181,6 +7181,16 @@ riscv_symbols = (
'helper_vfcvt_f_x_v_h',
'helper_vfcvt_f_x_v_w',
'helper_vfcvt_f_x_v_d',
'helper_vfwcvt_xu_f_v_h',
'helper_vfwcvt_xu_f_v_w',
'helper_vfwcvt_x_f_v_h',
'helper_vfwcvt_x_f_v_w',
'helper_vfwcvt_f_xu_v_h',
'helper_vfwcvt_f_xu_v_w',
'helper_vfwcvt_f_x_v_h',
'helper_vfwcvt_f_x_v_w',
'helper_vfwcvt_f_f_v_h',
'helper_vfwcvt_f_f_v_w',
'pmp_hart_has_privs',
'pmpaddr_csr_read',
'pmpaddr_csr_write',

10
qemu/riscv32.h
View file

@ -4617,6 +4617,16 @@
#define helper_vfcvt_f_x_v_h helper_vfcvt_f_x_v_h_riscv32
#define helper_vfcvt_f_x_v_w helper_vfcvt_f_x_v_w_riscv32
#define helper_vfcvt_f_x_v_d helper_vfcvt_f_x_v_d_riscv32
#define helper_vfwcvt_xu_f_v_h helper_vfwcvt_xu_f_v_h_riscv32
#define helper_vfwcvt_xu_f_v_w helper_vfwcvt_xu_f_v_w_riscv32
#define helper_vfwcvt_x_f_v_h helper_vfwcvt_x_f_v_h_riscv32
#define helper_vfwcvt_x_f_v_w helper_vfwcvt_x_f_v_w_riscv32
#define helper_vfwcvt_f_xu_v_h helper_vfwcvt_f_xu_v_h_riscv32
#define helper_vfwcvt_f_xu_v_w helper_vfwcvt_f_xu_v_w_riscv32
#define helper_vfwcvt_f_x_v_h helper_vfwcvt_f_x_v_h_riscv32
#define helper_vfwcvt_f_x_v_w helper_vfwcvt_f_x_v_w_riscv32
#define helper_vfwcvt_f_f_v_h helper_vfwcvt_f_f_v_h_riscv32
#define helper_vfwcvt_f_f_v_w helper_vfwcvt_f_f_v_w_riscv32
#define pmp_hart_has_privs pmp_hart_has_privs_riscv32
#define pmpaddr_csr_read pmpaddr_csr_read_riscv32
#define pmpaddr_csr_write pmpaddr_csr_write_riscv32

10
qemu/riscv64.h
View file

@ -4617,6 +4617,16 @@
#define helper_vfcvt_f_x_v_h helper_vfcvt_f_x_v_h_riscv64
#define helper_vfcvt_f_x_v_w helper_vfcvt_f_x_v_w_riscv64
#define helper_vfcvt_f_x_v_d helper_vfcvt_f_x_v_d_riscv64
#define helper_vfwcvt_xu_f_v_h helper_vfwcvt_xu_f_v_h_riscv64
#define helper_vfwcvt_xu_f_v_w helper_vfwcvt_xu_f_v_w_riscv64
#define helper_vfwcvt_x_f_v_h helper_vfwcvt_x_f_v_h_riscv64
#define helper_vfwcvt_x_f_v_w helper_vfwcvt_x_f_v_w_riscv64
#define helper_vfwcvt_f_xu_v_h helper_vfwcvt_f_xu_v_h_riscv64
#define helper_vfwcvt_f_xu_v_w helper_vfwcvt_f_xu_v_w_riscv64
#define helper_vfwcvt_f_x_v_h helper_vfwcvt_f_x_v_h_riscv64
#define helper_vfwcvt_f_x_v_w helper_vfwcvt_f_x_v_w_riscv64
#define helper_vfwcvt_f_f_v_h helper_vfwcvt_f_f_v_h_riscv64
#define helper_vfwcvt_f_f_v_w helper_vfwcvt_f_f_v_w_riscv64
#define pmp_hart_has_privs pmp_hart_has_privs_riscv64
#define pmpaddr_csr_read pmpaddr_csr_read_riscv64
#define pmpaddr_csr_write pmpaddr_csr_write_riscv64

11
qemu/target/riscv/helper.h
View file

@ -1020,3 +1020,14 @@ DEF_HELPER_5(vfcvt_f_xu_v_d, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfcvt_f_x_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfcvt_f_x_v_w, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfcvt_f_x_v_d, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_xu_f_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_xu_f_v_w, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_x_f_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_x_f_v_w, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_f_xu_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_f_xu_v_w, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_f_x_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_f_x_v_w, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_f_f_v_h, void, ptr, ptr, ptr, env, i32)
DEF_HELPER_5(vfwcvt_f_f_v_w, void, ptr, ptr, ptr, env, i32)

5
qemu/target/riscv/insn32.decode
View file

@ -521,6 +521,11 @@ vfcvt_xu_f_v 100010 . ..... 00000 001 ..... 1010111 @r2_vm
vfcvt_x_f_v 100010 . ..... 00001 001 ..... 1010111 @r2_vm
vfcvt_f_xu_v 100010 . ..... 00010 001 ..... 1010111 @r2_vm
vfcvt_f_x_v 100010 . ..... 00011 001 ..... 1010111 @r2_vm
vfwcvt_xu_f_v 100010 . ..... 01000 001 ..... 1010111 @r2_vm
vfwcvt_x_f_v 100010 . ..... 01001 001 ..... 1010111 @r2_vm
vfwcvt_f_xu_v 100010 . ..... 01010 001 ..... 1010111 @r2_vm
vfwcvt_f_x_v 100010 . ..... 01011 001 ..... 1010111 @r2_vm
vfwcvt_f_f_v 100010 . ..... 01100 001 ..... 1010111 @r2_vm
vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm
vsetvl 1000000 ..... ..... 111 ..... 1010111 @r

49
qemu/target/riscv/insn_trans/trans_rvv.inc.c
View file

@ -2263,3 +2263,52 @@ GEN_OPFV_TRANS(vfcvt_xu_f_v, opfv_check)
GEN_OPFV_TRANS(vfcvt_x_f_v, opfv_check)
GEN_OPFV_TRANS(vfcvt_f_xu_v, opfv_check)
GEN_OPFV_TRANS(vfcvt_f_x_v, opfv_check)
/* Widening Floating-Point/Integer Type-Convert Instructions */
/*
* If the current SEW does not correspond to a supported IEEE floating-point
* type, an illegal instruction exception is raised
*/
static bool opfv_widen_check(DisasContext *s, arg_rmr *a)
{
return (vext_check_isa_ill(s) &&
vext_check_overlap_mask(s, a->rd, a->vm, true) &&
vext_check_reg(s, a->rd, true) &&
vext_check_reg(s, a->rs2, false) &&
vext_check_overlap_group(a->rd, 2 << s->lmul, a->rs2,
1 << s->lmul) &&
(s->lmul < 0x3) && (s->sew < 0x3) && (s->sew != 0));
}
#define GEN_OPFV_WIDEN_TRANS(NAME) \
static bool trans_##NAME(DisasContext *s, arg_rmr *a) \
{ \
TCGContext *tcg_ctx = s->uc->tcg_ctx; \
if (opfv_widen_check(s, a)) { \
uint32_t data = 0; \
static gen_helper_gvec_3_ptr * const fns[2] = { \
gen_helper_##NAME##_h, \
gen_helper_##NAME##_w, \
}; \
TCGLabel *over = gen_new_label(tcg_ctx); \
gen_set_rm(s, 7); \
tcg_gen_brcondi_tl(tcg_ctx, TCG_COND_EQ, tcg_ctx->cpu_vl_risc, 0, over); \
\
data = FIELD_DP32(data, VDATA, MLEN, s->mlen); \
data = FIELD_DP32(data, VDATA, VM, a->vm); \
data = FIELD_DP32(data, VDATA, LMUL, s->lmul); \
tcg_gen_gvec_3_ptr(tcg_ctx, vreg_ofs(s, a->rd), vreg_ofs(s, 0), \
vreg_ofs(s, a->rs2), tcg_ctx->cpu_env, 0, \
s->vlen / 8, data, fns[s->sew - 1]); \
gen_set_label(tcg_ctx, over); \
return true; \
} \
return false; \
}
GEN_OPFV_WIDEN_TRANS(vfwcvt_xu_f_v)
GEN_OPFV_WIDEN_TRANS(vfwcvt_x_f_v)
GEN_OPFV_WIDEN_TRANS(vfwcvt_f_xu_v)
GEN_OPFV_WIDEN_TRANS(vfwcvt_f_x_v)
GEN_OPFV_WIDEN_TRANS(vfwcvt_f_f_v)

42
qemu/target/riscv/vector_helper.c
View file

@ -4227,3 +4227,45 @@ RVVCALL(OPFVV1, vfcvt_f_x_v_d, OP_UU_D, H8, H8, int64_to_float64)
GEN_VEXT_V_ENV(vfcvt_f_x_v_h, 2, 2, clearh)
GEN_VEXT_V_ENV(vfcvt_f_x_v_w, 4, 4, clearl)
GEN_VEXT_V_ENV(vfcvt_f_x_v_d, 8, 8, clearq)
/* Widening Floating-Point/Integer Type-Convert Instructions */
/* (TD, T2, TX2) */
#define WOP_UU_H uint32_t, uint16_t, uint16_t
#define WOP_UU_W uint64_t, uint32_t, uint32_t
/* vfwcvt.xu.f.v vd, vs2, vm # Convert float to double-width unsigned integer.*/
RVVCALL(OPFVV1, vfwcvt_xu_f_v_h, WOP_UU_H, H4, H2, float16_to_uint32)
RVVCALL(OPFVV1, vfwcvt_xu_f_v_w, WOP_UU_W, H8, H4, float32_to_uint64)
GEN_VEXT_V_ENV(vfwcvt_xu_f_v_h, 2, 4, clearl)
GEN_VEXT_V_ENV(vfwcvt_xu_f_v_w, 4, 8, clearq)
/* vfwcvt.x.f.v vd, vs2, vm # Convert float to double-width signed integer. */
RVVCALL(OPFVV1, vfwcvt_x_f_v_h, WOP_UU_H, H4, H2, float16_to_int32)
RVVCALL(OPFVV1, vfwcvt_x_f_v_w, WOP_UU_W, H8, H4, float32_to_int64)
GEN_VEXT_V_ENV(vfwcvt_x_f_v_h, 2, 4, clearl)
GEN_VEXT_V_ENV(vfwcvt_x_f_v_w, 4, 8, clearq)
/* vfwcvt.f.xu.v vd, vs2, vm # Convert unsigned integer to double-width float */
RVVCALL(OPFVV1, vfwcvt_f_xu_v_h, WOP_UU_H, H4, H2, uint16_to_float32)
RVVCALL(OPFVV1, vfwcvt_f_xu_v_w, WOP_UU_W, H8, H4, uint32_to_float64)
GEN_VEXT_V_ENV(vfwcvt_f_xu_v_h, 2, 4, clearl)
GEN_VEXT_V_ENV(vfwcvt_f_xu_v_w, 4, 8, clearq)
/* vfwcvt.f.x.v vd, vs2, vm # Convert integer to double-width float. */
RVVCALL(OPFVV1, vfwcvt_f_x_v_h, WOP_UU_H, H4, H2, int16_to_float32)
RVVCALL(OPFVV1, vfwcvt_f_x_v_w, WOP_UU_W, H8, H4, int32_to_float64)
GEN_VEXT_V_ENV(vfwcvt_f_x_v_h, 2, 4, clearl)
GEN_VEXT_V_ENV(vfwcvt_f_x_v_w, 4, 8, clearq)
/*
* vfwcvt.f.f.v vd, vs2, vm #
* Convert single-width float to double-width float.
*/
static uint32_t vfwcvtffv16(uint16_t a, float_status *s)
{
return float16_to_float32(a, true, s);
}
RVVCALL(OPFVV1, vfwcvt_f_f_v_h, WOP_UU_H, H4, H2, vfwcvtffv16)
RVVCALL(OPFVV1, vfwcvt_f_f_v_w, WOP_UU_W, H8, H4, float32_to_float64)
GEN_VEXT_V_ENV(vfwcvt_f_f_v_h, 2, 4, clearl)
GEN_VEXT_V_ENV(vfwcvt_f_f_v_w, 4, 8, clearq)