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target/riscv: rvv-1.0: widening floating-point/integer type-convert

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Add the following instructions:

* vfwcvt.rtz.xu.f.v
* vfwcvt.rtz.x.f.v

Also adjust GEN_OPFV_WIDEN_TRANS() to accept multiple floating-point
rounding modes.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20211210075704.23951-63-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Frank Chang 2021-12-10 15:56:48 +08:00 • committed by Alistair Francis
parent 900da87ab9
commit 3ce4c09df7
4 changed files with 64 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

57
target/riscv/insn_trans/trans_rvv.c.inc
View file

@ -2536,17 +2536,17 @@ static bool opfv_widen_check(DisasContext *s, arg_rmr *a)
vext_check_ds(s, a->rd, a->rs2, a->vm);
}
#define GEN_OPFV_WIDEN_TRANS(NAME) \
#define GEN_OPFV_WIDEN_TRANS(NAME, HELPER, FRM) \
static bool trans_##NAME(DisasContext *s, arg_rmr *a) \
{ \
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, \
gen_helper_##HELPER##_h, \
gen_helper_##HELPER##_w, \
}; \
TCGLabel *over = gen_new_label(); \
gen_set_rm(s, RISCV_FRM_DYN); \
gen_set_rm(s, FRM); \
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_vl, 0, over); \
\
data = FIELD_DP32(data, VDATA, VM, a->vm); \
@ -2562,11 +2562,50 @@ static bool trans_##NAME(DisasContext *s, arg_rmr *a) \
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)
GEN_OPFV_WIDEN_TRANS(vfwcvt_xu_f_v, vfwcvt_xu_f_v, RISCV_FRM_DYN)
GEN_OPFV_WIDEN_TRANS(vfwcvt_x_f_v, vfwcvt_x_f_v, RISCV_FRM_DYN)
GEN_OPFV_WIDEN_TRANS(vfwcvt_f_f_v, vfwcvt_f_f_v, RISCV_FRM_DYN)
/* Reuse the helper functions from vfwcvt.xu.f.v and vfwcvt.x.f.v */
GEN_OPFV_WIDEN_TRANS(vfwcvt_rtz_xu_f_v, vfwcvt_xu_f_v, RISCV_FRM_RTZ)
GEN_OPFV_WIDEN_TRANS(vfwcvt_rtz_x_f_v, vfwcvt_x_f_v, RISCV_FRM_RTZ)
static bool opfxv_widen_check(DisasContext *s, arg_rmr *a)
{
return require_rvv(s) &&
require_scale_rvf(s) &&
vext_check_isa_ill(s) &&
/* OPFV widening instructions ignore vs1 check */
vext_check_ds(s, a->rd, a->rs2, a->vm);
}
#define GEN_OPFXV_WIDEN_TRANS(NAME) \
static bool trans_##NAME(DisasContext *s, arg_rmr *a) \
{ \
if (opfxv_widen_check(s, a)) { \
uint32_t data = 0; \
static gen_helper_gvec_3_ptr * const fns[3] = { \
gen_helper_##NAME##_b, \
gen_helper_##NAME##_h, \
gen_helper_##NAME##_w, \
}; \
TCGLabel *over = gen_new_label(); \
gen_set_rm(s, RISCV_FRM_DYN); \
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_vl, 0, over); \
\
data = FIELD_DP32(data, VDATA, VM, a->vm); \
tcg_gen_gvec_3_ptr(vreg_ofs(s, a->rd), vreg_ofs(s, 0), \
vreg_ofs(s, a->rs2), cpu_env, \
s->vlen / 8, s->vlen / 8, data, \
fns[s->sew]); \
mark_vs_dirty(s); \
gen_set_label(over); \
return true; \
} \
return false; \
}
GEN_OPFXV_WIDEN_TRANS(vfwcvt_f_xu_v)
GEN_OPFXV_WIDEN_TRANS(vfwcvt_f_x_v)
/* Narrowing Floating-Point/Integer Type-Convert Instructions */