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Fri, 13 Mar 2020 00:23:56 +0800 From: LIU Zhiwei To: richard.henderson@linaro.org, alistair23@gmail.com, chihmin.chao@sifive.com, palmer@dabbelt.com Subject: [PATCH v5 42/60] target/riscv: widening floating-point/integer type-convert instructions Date: Thu, 12 Mar 2020 22:58:42 +0800 Message-Id: <20200312145900.2054-43-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200312145900.2054-1-zhiwei_liu@c-sky.com> References: <20200312145900.2054-1-zhiwei_liu@c-sky.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 121.197.200.217 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: guoren@linux.alibaba.com, qemu-riscv@nongnu.org, qemu-devel@nongnu.org, wxy194768@alibaba-inc.com, wenmeng_zhang@c-sky.com, LIU Zhiwei Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: LIU Zhiwei Reviewed-by: Richard Henderson --- target/riscv/helper.h | 11 ++++++ target/riscv/insn32.decode | 5 +++ target/riscv/insn_trans/trans_rvv.inc.c | 42 +++++++++++++++++++++++ target/riscv/vector_helper.c | 45 +++++++++++++++++++++++++ 4 files changed, 103 insertions(+) diff --git a/target/riscv/helper.h b/target/riscv/helper.h index a34157e277..90b4d50c62 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -999,3 +999,14 @@ 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) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 6ca6f97323..247419937e 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -513,6 +513,11 @@ 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 diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c index a61c7fdf32..0566132d4e 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -1939,3 +1939,45 @@ 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, RVV) && + 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) \ +{ \ + 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, \ + }; \ + 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(vreg_ofs(s, a->rd), vreg_ofs(s, 0), \ + vreg_ofs(s, a->rs2), cpu_env, 0, \ + s->vlen / 8, data, fns[s->sew - 1]); \ + 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) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index d032745e94..6454c54500 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -3975,3 +3975,48 @@ 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); +} +static uint64_t vfwcvtffv32(uint32_t a, float_status *s) +{ + return float32_to_float64(a, 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, vfwcvtffv32) +GEN_VEXT_V_ENV(vfwcvt_f_f_v_h, 2, 4, clearl) +GEN_VEXT_V_ENV(vfwcvt_f_f_v_w, 4, 8, clearq)