[v6,30/61] target/riscv: vector single-width floating-point add/subtract instructions

Message ID	20200317150653.9008-31-zhiwei_liu@c-sky.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=XIZz=5C=nongnu.org=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E85AD20714 From: LIU Zhiwei <zhiwei_liu@c-sky.com> To: richard.henderson@linaro.org, alistair23@gmail.com, chihmin.chao@sifive.com, palmer@dabbelt.com Subject: [PATCH v6 30/61] target/riscv: vector single-width floating-point add/subtract instructions Date: Tue, 17 Mar 2020 23:06:22 +0800 Message-Id: <20200317150653.9008-31-zhiwei_liu@c-sky.com> In-Reply-To: <20200317150653.9008-1-zhiwei_liu@c-sky.com> References: <20200317150653.9008-1-zhiwei_liu@c-sky.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list Cc: guoren@linux.alibaba.com, qemu-riscv@nongnu.org, qemu-devel@nongnu.org, wxy194768@alibaba-inc.com, wenmeng_zhang@c-sky.com, LIU Zhiwei <zhiwei_liu@c-sky.com> Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org>
Series	target/riscv: support vector extension v0.7.1 \| expand [v6,00/61] target/riscv: support vector extension v0.7.1 [v6,01/61] target/riscv: add vector extension field in CPURISCVState [v6,02/61] target/riscv: implementation-defined constant parameters [v6,03/61] target/riscv: support vector extension csr [v6,04/61] target/riscv: add vector configure instruction [v6,05/61] target/riscv: add an internals.h header [v6,06/61] target/riscv: add vector stride load and store instructions [v6,07/61] target/riscv: add vector index load and store instructions [v6,08/61] target/riscv: add fault-only-first unit stride load [v6,09/61] target/riscv: add vector amo operations [v6,10/61] target/riscv: vector single-width integer add and subtract [v6,11/61] target/riscv: vector widening integer add and subtract [v6,12/61] target/riscv: vector integer add-with-carry / subtract-with-borrow instructions [v6,13/61] target/riscv: vector bitwise logical instructions [v6,14/61] target/riscv: vector single-width bit shift instructions [v6,15/61] target/riscv: vector narrowing integer right shift instructions [v6,16/61] target/riscv: vector integer comparison instructions [v6,17/61] target/riscv: vector integer min/max instructions [v6,18/61] target/riscv: vector single-width integer multiply instructions [v6,19/61] target/riscv: vector integer divide instructions [v6,20/61] target/riscv: vector widening integer multiply instructions [v6,21/61] target/riscv: vector single-width integer multiply-add instructions [v6,22/61] target/riscv: vector widening integer multiply-add instructions [v6,23/61] target/riscv: vector integer merge and move instructions [v6,24/61] target/riscv: vector single-width saturating add and subtract [v6,25/61] target/riscv: vector single-width averaging add and subtract [v6,26/61] target/riscv: vector single-width fractional multiply with rounding and saturation [v6,27/61] target/riscv: vector widening saturating scaled multiply-add [v6,28/61] target/riscv: vector single-width scaling shift instructions [v6,29/61] target/riscv: vector narrowing fixed-point clip instructions [v6,30/61] target/riscv: vector single-width floating-point add/subtract instructions [v6,31/61] target/riscv: vector widening floating-point add/subtract instructions [v6,32/61] target/riscv: vector single-width floating-point multiply/divide instructions [v6,33/61] target/riscv: vector widening floating-point multiply [v6,34/61] target/riscv: vector single-width floating-point fused multiply-add instructions [v6,35/61] target/riscv: vector widening floating-point fused multiply-add instructions [v6,36/61] target/riscv: vector floating-point square-root instruction [v6,37/61] target/riscv: vector floating-point min/max instructions [v6,38/61] target/riscv: vector floating-point sign-injection instructions [v6,39/61] target/riscv: vector floating-point compare instructions [v6,40/61] target/riscv: vector floating-point classify instructions [v6,41/61] target/riscv: vector floating-point merge instructions [v6,42/61] target/riscv: vector floating-point/integer type-convert instructions [v6,43/61] target/riscv: widening floating-point/integer type-convert instructions [v6,44/61] target/riscv: narrowing floating-point/integer type-convert instructions [v6,45/61] target/riscv: vector single-width integer reduction instructions [v6,46/61] target/riscv: vector wideing integer reduction instructions [v6,47/61] target/riscv: vector single-width floating-point reduction instructions [v6,48/61] target/riscv: vector widening floating-point reduction instructions [v6,49/61] target/riscv: vector mask-register logical instructions [v6,50/61] target/riscv: vector mask population count vmpopc [v6,51/61] target/riscv: vmfirst find-first-set mask bit [v6,52/61] target/riscv: set-X-first mask bit [v6,53/61] target/riscv: vector iota instruction [v6,54/61] target/riscv: vector element index instruction [v6,55/61] target/riscv: integer extract instruction [v6,56/61] target/riscv: integer scalar move instruction [v6,57/61] target/riscv: floating-point scalar move instructions [v6,58/61] target/riscv: vector slide instructions [v6,59/61] target/riscv: vector register gather instruction [v6,60/61] target/riscv: vector compress instruction [v6,61/61] target/riscv: configure and turn on vector extension from command line

diff --git a/target/riscv/helper.h b/target/riscv/helper.h index aba0c32cde..bf35168805 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -793,3 +793,19 @@ DEF_HELPER_6(vnclipu_vx_w, void, ptr, ptr, tl, ptr, env, i32) DEF_HELPER_6(vnclip_vx_b, void, ptr, ptr, tl, ptr, env, i32) DEF_HELPER_6(vnclip_vx_h, void, ptr, ptr, tl, ptr, env, i32) DEF_HELPER_6(vnclip_vx_w, void, ptr, ptr, tl, ptr, env, i32) + +DEF_HELPER_6(vfadd_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vfadd_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vfadd_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vfsub_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vfsub_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vfsub_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vfadd_vf_h, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfadd_vf_w, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfadd_vf_d, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfsub_vf_h, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfsub_vf_w, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfsub_vf_d, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfrsub_vf_h, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfrsub_vf_w, void, ptr, ptr, i64, ptr, env, i32) +DEF_HELPER_6(vfrsub_vf_d, void, ptr, ptr, i64, ptr, env, i32) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 8b898f9bad..c8e3f10162 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -443,6 +443,11 @@ vnclipu_vi 101110 . ..... ..... 011 ..... 1010111 @r_vm vnclip_vv 101111 . ..... ..... 000 ..... 1010111 @r_vm vnclip_vx 101111 . ..... ..... 100 ..... 1010111 @r_vm vnclip_vi 101111 . ..... ..... 011 ..... 1010111 @r_vm +vfadd_vv 000000 . ..... ..... 001 ..... 1010111 @r_vm +vfadd_vf 000000 . ..... ..... 101 ..... 1010111 @r_vm +vfsub_vv 000010 . ..... ..... 001 ..... 1010111 @r_vm +vfsub_vf 000010 . ..... ..... 101 ..... 1010111 @r_vm +vfrsub_vf 100111 . ..... ..... 101 ..... 1010111 @r_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 ccf6421757..bb5e637ea8 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -1672,3 +1672,110 @@ GEN_OPIVX_NARROW_TRANS(vnclipu_vx) GEN_OPIVX_NARROW_TRANS(vnclip_vx) GEN_OPIVI_NARROW_TRANS(vnclipu_vi, 1, vnclipu_vx) GEN_OPIVI_NARROW_TRANS(vnclip_vi, 1, vnclip_vx) + +/* + *** Vector Float Point Arithmetic Instructions + */ +/* Vector Single-Width Floating-Point Add/Subtract Instructions */ + +/* + * If the current SEW does not correspond to a supported IEEE floating-point + * type, an illegal instruction exception is raised. + */ +static bool opfvv_check(DisasContext *s, arg_rmrr *a) +{ + return (vext_check_isa_ill(s) && + vext_check_overlap_mask(s, a->rd, a->vm, false) && + vext_check_reg(s, a->rd, false) && + vext_check_reg(s, a->rs2, false) && + vext_check_reg(s, a->rs1, false) && + (s->sew != 0)); +} + +/* OPFVV without GVEC IR */ +#define GEN_OPFVV_TRANS(NAME, CHECK) \ +static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \ +{ \ + if (CHECK(s, a)) { \ + uint32_t data = 0; \ + static gen_helper_gvec_4_ptr * const fns[3] = { \ + gen_helper_##NAME##_h, \ + gen_helper_##NAME##_w, \ + gen_helper_##NAME##_d, \ + }; \ + 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_4_ptr(vreg_ofs(s, a->rd), vreg_ofs(s, 0), \ + vreg_ofs(s, a->rs1), vreg_ofs(s, a->rs2), \ + cpu_env, 0, s->vlen / 8, data, fns[s->sew - 1]); \ + return true; \ + } \ + return false; \ +} +GEN_OPFVV_TRANS(vfadd_vv, opfvv_check) +GEN_OPFVV_TRANS(vfsub_vv, opfvv_check) + +typedef void gen_helper_opfvf(TCGv_ptr, TCGv_ptr, TCGv_i64, TCGv_ptr, + TCGv_env, TCGv_i32); + +static bool opfvf_trans(uint32_t vd, uint32_t rs1, uint32_t vs2, + uint32_t data, gen_helper_opfvf *fn, DisasContext *s) +{ + TCGv_ptr dest, src2, mask; + TCGv_i32 desc; + + dest = tcg_temp_new_ptr(); + mask = tcg_temp_new_ptr(); + src2 = tcg_temp_new_ptr(); + desc = tcg_const_i32(simd_desc(0, s->vlen / 8, data)); + + tcg_gen_addi_ptr(dest, cpu_env, vreg_ofs(s, vd)); + tcg_gen_addi_ptr(src2, cpu_env, vreg_ofs(s, vs2)); + tcg_gen_addi_ptr(mask, cpu_env, vreg_ofs(s, 0)); + + fn(dest, mask, cpu_fpr[rs1], src2, cpu_env, desc); + + tcg_temp_free_ptr(dest); + tcg_temp_free_ptr(mask); + tcg_temp_free_ptr(src2); + tcg_temp_free_i32(desc); + return true; +} + +static bool opfvf_check(DisasContext *s, arg_rmrr *a) +{ +/* + * If the current SEW does not correspond to a supported IEEE floating-point + * type, an illegal instruction exception is raised + */ + return (vext_check_isa_ill(s) && + vext_check_overlap_mask(s, a->rd, a->vm, false) && + vext_check_reg(s, a->rd, false) && + vext_check_reg(s, a->rs2, false) && + (s->sew != 0)); +} + +/* OPFVF without GVEC IR */ +#define GEN_OPFVF_TRANS(NAME, CHECK) \ +static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \ +{ \ + if (CHECK(s, a)) { \ + uint32_t data = 0; \ + static gen_helper_opfvf *const fns[3] = { \ + gen_helper_##NAME##_h, \ + gen_helper_##NAME##_w, \ + gen_helper_##NAME##_d, \ + }; \ + data = FIELD_DP32(data, VDATA, MLEN, s->mlen); \ + data = FIELD_DP32(data, VDATA, VM, a->vm); \ + data = FIELD_DP32(data, VDATA, LMUL, s->lmul); \ + return opfvf_trans(a->rd, a->rs1, a->rs2, data, \ + fns[s->sew - 1], s); \ + } \ + return false; \ +} + +GEN_OPFVF_TRANS(vfadd_vf, opfvf_check) +GEN_OPFVF_TRANS(vfsub_vf, opfvf_check) +GEN_OPFVF_TRANS(vfrsub_vf, opfvf_check) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index f4dc6c4783..785c727a8d 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -21,6 +21,7 @@ #include "exec/memop.h" #include "exec/exec-all.h" #include "exec/helper-proto.h" +#include "fpu/softfloat.h" #include "tcg/tcg-gvec-desc.h" #include "internals.h" #include <math.h> @@ -3151,3 +3152,117 @@ RVVCALL(OPIVX2_RM, vnclipu_vx_w, NOP_UUU_W, H4, H8, vnclipu32) GEN_VEXT_VX_RM(vnclipu_vx_b, 1, 1, clearb) GEN_VEXT_VX_RM(vnclipu_vx_h, 2, 2, clearh) GEN_VEXT_VX_RM(vnclipu_vx_w, 4, 4, clearl) + +/* + *** Vector Float Point Arithmetic Instructions + */ +/* Vector Single-Width Floating-Point Add/Subtract Instructions */ +#define OPFVV2(NAME, TD, T1, T2, TX1, TX2, HD, HS1, HS2, OP) \ +static void do_##NAME(void *vd, void *vs1, void *vs2, int i, \ + CPURISCVState *env) \ +{ \ + TX1 s1 = *((T1 *)vs1 + HS1(i)); \ + TX2 s2 = *((T2 *)vs2 + HS2(i)); \ + *((TD *)vd + HD(i)) = OP(s2, s1, &env->fp_status); \ +} + +#define GEN_VEXT_VV_ENV(NAME, ESZ, DSZ, CLEAR_FN) \ +void HELPER(NAME)(void *vd, void *v0, void *vs1, \ + 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; \ + \ + if (vl == 0) { \ + return; \ + } \ + for (i = 0; i < vl; i++) { \ + if (!vm && !vext_elem_mask(v0, mlen, i)) { \ + continue; \ + } \ + do_##NAME(vd, vs1, vs2, i, env); \ + } \ + CLEAR_FN(vd, vl, vl * DSZ, vlmax * DSZ); \ +} + +RVVCALL(OPFVV2, vfadd_vv_h, OP_UUU_H, H2, H2, H2, float16_add) +RVVCALL(OPFVV2, vfadd_vv_w, OP_UUU_W, H4, H4, H4, float32_add) +RVVCALL(OPFVV2, vfadd_vv_d, OP_UUU_D, H8, H8, H8, float64_add) +GEN_VEXT_VV_ENV(vfadd_vv_h, 2, 2, clearh) +GEN_VEXT_VV_ENV(vfadd_vv_w, 4, 4, clearl) +GEN_VEXT_VV_ENV(vfadd_vv_d, 8, 8, clearq) + +#define OPFVF2(NAME, TD, T1, T2, TX1, TX2, HD, HS2, OP) \ +static void do_##NAME(void *vd, uint64_t s1, void *vs2, int i, \ + CPURISCVState *env) \ +{ \ + TX2 s2 = *((T2 *)vs2 + HS2(i)); \ + *((TD *)vd + HD(i)) = OP(s2, (TX1)(T1)s1, &env->fp_status);\ +} + +#define GEN_VEXT_VF(NAME, ESZ, DSZ, CLEAR_FN) \ +void HELPER(NAME)(void *vd, void *v0, uint64_t s1, \ + 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; \ + \ + if (vl == 0) { \ + return; \ + } \ + for (i = 0; i < vl; i++) { \ + if (!vm && !vext_elem_mask(v0, mlen, i)) { \ + continue; \ + } \ + do_##NAME(vd, s1, vs2, i, env); \ + } \ + CLEAR_FN(vd, vl, vl * DSZ, vlmax * DSZ); \ +} + +RVVCALL(OPFVF2, vfadd_vf_h, OP_UUU_H, H2, H2, float16_add) +RVVCALL(OPFVF2, vfadd_vf_w, OP_UUU_W, H4, H4, float32_add) +RVVCALL(OPFVF2, vfadd_vf_d, OP_UUU_D, H8, H8, float64_add) +GEN_VEXT_VF(vfadd_vf_h, 2, 2, clearh) +GEN_VEXT_VF(vfadd_vf_w, 4, 4, clearl) +GEN_VEXT_VF(vfadd_vf_d, 8, 8, clearq) + +RVVCALL(OPFVV2, vfsub_vv_h, OP_UUU_H, H2, H2, H2, float16_sub) +RVVCALL(OPFVV2, vfsub_vv_w, OP_UUU_W, H4, H4, H4, float32_sub) +RVVCALL(OPFVV2, vfsub_vv_d, OP_UUU_D, H8, H8, H8, float64_sub) +GEN_VEXT_VV_ENV(vfsub_vv_h, 2, 2, clearh) +GEN_VEXT_VV_ENV(vfsub_vv_w, 4, 4, clearl) +GEN_VEXT_VV_ENV(vfsub_vv_d, 8, 8, clearq) +RVVCALL(OPFVF2, vfsub_vf_h, OP_UUU_H, H2, H2, float16_sub) +RVVCALL(OPFVF2, vfsub_vf_w, OP_UUU_W, H4, H4, float32_sub) +RVVCALL(OPFVF2, vfsub_vf_d, OP_UUU_D, H8, H8, float64_sub) +GEN_VEXT_VF(vfsub_vf_h, 2, 2, clearh) +GEN_VEXT_VF(vfsub_vf_w, 4, 4, clearl) +GEN_VEXT_VF(vfsub_vf_d, 8, 8, clearq) + +static uint16_t float16_rsub(uint16_t a, uint16_t b, float_status *s) +{ + return float16_sub(b, a, s); +} + +static uint32_t float32_rsub(uint32_t a, uint32_t b, float_status *s) +{ + return float32_sub(b, a, s); +} + +static uint64_t float64_rsub(uint64_t a, uint64_t b, float_status *s) +{ + return float64_sub(b, a, s); +} + +RVVCALL(OPFVF2, vfrsub_vf_h, OP_UUU_H, H2, H2, float16_rsub) +RVVCALL(OPFVF2, vfrsub_vf_w, OP_UUU_W, H4, H4, float32_rsub) +RVVCALL(OPFVF2, vfrsub_vf_d, OP_UUU_D, H8, H8, float64_rsub) +GEN_VEXT_VF(vfrsub_vf_h, 2, 2, clearh) +GEN_VEXT_VF(vfrsub_vf_w, 4, 4, clearl) +GEN_VEXT_VF(vfrsub_vf_d, 8, 8, clearq)

[v6,30/61] target/riscv: vector single-width floating-point add/subtract instructions

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Patch