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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id m10sm4022177wru.4.2020.06.23.04.39.12 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jun 2020 04:39:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=ewpEywe0wRSBi+LbUmJlkvdtnItIOQfmXv/xIynBB9M=; b=MvT6+aOkv+XkVht5gsex0tISXk/tX8QRIrMMbLfgdJGfvx1HvrBoMGdGADPgBXvFo7 ed1UJsMsJhUL3Y/3iUFf1Oe8tZ+VfYbqQmL0uG+gdxwrODgYPZWEzaByCT2s55mPZGTp d2hc96igmeFRzS8cjYgm/XLwlhDydMikgVL0+7t9d5RAuEypRZbReUoyJJgHE5h+02yJ gCnCBOZmmPrKRF3r7nBx7UCH7LlJq2t0erM+WpALLuyoH7pk8tXCEl/cHLm/YmvpYv8l xtu73yPC27fDLqNXquBtVlabcS+Ivvvvx9jG3k/lHngcuGp8HQf+IOMKFu/3bRwCRgyM So3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ewpEywe0wRSBi+LbUmJlkvdtnItIOQfmXv/xIynBB9M=; b=plmXLiicOzDkoc6HfTvRfHCtbI6WDrcgZImYbtlTXrrSC8kOTyareebNjTr0kCwVF0 48x7h1fBHOE2LXo44nWm7lHjBZbg86pDk4rgSFcde8Tw5tr24DPgMOgVJsE2SkNwuh89 Oy9U/irp9l/A+gpoFgGPKekZmBh6nDsXysL46zWAueoUB+XCDLr/9MtH2qoxM5ee9b5Z JgCjweq4KsNN/bLbPYHdpqZ8N6WLAyM9vmP8cpXxPfxYJzMz3z+BpNOBpnFf1EU1zYve 4IYvMh4cebkLSnUSQBq9COfwmTCL5q5LBLjYWGwpsRm0cl6FRyLuuULCU0oUKFuecv2M w05Q== X-Gm-Message-State: AOAM533fQU0HRjNkJ/zfsgQvq9xbQHExuAJ21/M9nqYP3zDQvLxJho3H JSAL2S/Bmepver7RyEIIPcoYuEfm3nFJkw== X-Google-Smtp-Source: ABdhPJxuo543k4/GG54FYGNy+kAylqq8VUULb0v5WAaWEfb7iSUA+wlzyUW4UKsNlGVBB5EV2RkV/g== X-Received: by 2002:a5d:56d0:: with SMTP id m16mr23898452wrw.194.1592912353127; Tue, 23 Jun 2020 04:39:13 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 06/42] target/arm: Convert Neon narrowing moves to decodetree Date: Tue, 23 Jun 2020 12:38:28 +0100 Message-Id: <20200623113904.28805-7-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200623113904.28805-1-peter.maydell@linaro.org> References: <20200623113904.28805-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::442; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x442.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Convert the Neon narrowing moves VMQNV, VQMOVN, VQMOVUN in the 2-reg-misc group to decodetree. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20200616170844.13318-5-peter.maydell@linaro.org --- target/arm/neon-dp.decode | 9 ++++ target/arm/translate-neon.inc.c | 59 ++++++++++++++++++++++++ target/arm/translate.c | 81 +-------------------------------- 3 files changed, 70 insertions(+), 79 deletions(-) diff --git a/target/arm/neon-dp.decode b/target/arm/neon-dp.decode index ad9e17fd737..2277b4c7b51 100644 --- a/target/arm/neon-dp.decode +++ b/target/arm/neon-dp.decode @@ -439,6 +439,8 @@ Vimm_1r 1111 001 . 1 . 000 ... .... cmode:4 0 = . op:1 1 .... @1reg_imm =20 @2misc .... ... .. . .. size:2 .. .... . .... q:1 . . .... \ &2misc vm=3D%vm_dp vd=3D%vd_dp + @2misc_q0 .... ... .. . .. size:2 .. .... . .... . . . .... \ + &2misc vm=3D%vm_dp vd=3D%vd_dp q=3D0 =20 VREV64 1111 001 11 . 11 .. 00 .... 0 0000 . . 0 .... @2misc =20 @@ -450,6 +452,13 @@ Vimm_1r 1111 001 . 1 . 000 ... .... cmode:4 0= . op:1 1 .... @1reg_imm =20 VUZP 1111 001 11 . 11 .. 10 .... 0 0010 . . 0 .... @2misc VZIP 1111 001 11 . 11 .. 10 .... 0 0011 . . 0 .... @2misc + + VMOVN 1111 001 11 . 11 .. 10 .... 0 0100 0 . 0 .... @2misc_q0 + # VQMOVUN: unsigned result (source is always signed) + VQMOVUN 1111 001 11 . 11 .. 10 .... 0 0100 1 . 0 .... @2misc_q0 + # VQMOVN: signed result, source may be signed (_S) or unsigned (_U) + VQMOVN_S 1111 001 11 . 11 .. 10 .... 0 0101 0 . 0 .... @2misc_q0 + VQMOVN_U 1111 001 11 . 11 .. 10 .... 0 0101 1 . 0 .... @2misc_q0 ] =20 # Subgroup for size !=3D 0b11 diff --git a/target/arm/translate-neon.inc.c b/target/arm/translate-neon.in= c.c index f4799dd9770..b0620972854 100644 --- a/target/arm/translate-neon.inc.c +++ b/target/arm/translate-neon.inc.c @@ -3243,3 +3243,62 @@ static bool trans_VZIP(DisasContext *s, arg_2misc *a) }; return do_zip_uzp(s, a, fn[a->q][a->size]); } + +static bool do_vmovn(DisasContext *s, arg_2misc *a, + NeonGenNarrowEnvFn *narrowfn) +{ + TCGv_i64 rm; + TCGv_i32 rd0, rd1; + + if (!arm_dc_feature(s, ARM_FEATURE_NEON)) { + return false; + } + + /* UNDEF accesses to D16-D31 if they don't exist. */ + if (!dc_isar_feature(aa32_simd_r32, s) && + ((a->vd | a->vm) & 0x10)) { + return false; + } + + if (a->vm & 1) { + return false; + } + + if (!narrowfn) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + rm =3D tcg_temp_new_i64(); + rd0 =3D tcg_temp_new_i32(); + rd1 =3D tcg_temp_new_i32(); + + neon_load_reg64(rm, a->vm); + narrowfn(rd0, cpu_env, rm); + neon_load_reg64(rm, a->vm + 1); + narrowfn(rd1, cpu_env, rm); + neon_store_reg(a->vd, 0, rd0); + neon_store_reg(a->vd, 1, rd1); + tcg_temp_free_i64(rm); + return true; +} + +#define DO_VMOVN(INSN, FUNC) \ + static bool trans_##INSN(DisasContext *s, arg_2misc *a) \ + { \ + static NeonGenNarrowEnvFn * const narrowfn[] =3D { \ + FUNC##8, \ + FUNC##16, \ + FUNC##32, \ + NULL, \ + }; \ + return do_vmovn(s, a, narrowfn[a->size]); \ + } + +DO_VMOVN(VMOVN, gen_neon_narrow_u) +DO_VMOVN(VQMOVUN, gen_helper_neon_unarrow_sat) +DO_VMOVN(VQMOVN_S, gen_helper_neon_narrow_sat_s) +DO_VMOVN(VQMOVN_U, gen_helper_neon_narrow_sat_u) diff --git a/target/arm/translate.c b/target/arm/translate.c index 442f287d861..8ecae264e15 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -2975,46 +2975,6 @@ static void gen_neon_trn_u16(TCGv_i32 t0, TCGv_i32 t= 1) tcg_temp_free_i32(rd); } =20 -static inline void gen_neon_narrow(int size, TCGv_i32 dest, TCGv_i64 src) -{ - switch (size) { - case 0: gen_helper_neon_narrow_u8(dest, src); break; - case 1: gen_helper_neon_narrow_u16(dest, src); break; - case 2: tcg_gen_extrl_i64_i32(dest, src); break; - default: abort(); - } -} - -static inline void gen_neon_narrow_sats(int size, TCGv_i32 dest, TCGv_i64 = src) -{ - switch (size) { - case 0: gen_helper_neon_narrow_sat_s8(dest, cpu_env, src); break; - case 1: gen_helper_neon_narrow_sat_s16(dest, cpu_env, src); break; - case 2: gen_helper_neon_narrow_sat_s32(dest, cpu_env, src); break; - default: abort(); - } -} - -static inline void gen_neon_narrow_satu(int size, TCGv_i32 dest, TCGv_i64 = src) -{ - switch (size) { - case 0: gen_helper_neon_narrow_sat_u8(dest, cpu_env, src); break; - case 1: gen_helper_neon_narrow_sat_u16(dest, cpu_env, src); break; - case 2: gen_helper_neon_narrow_sat_u32(dest, cpu_env, src); break; - default: abort(); - } -} - -static inline void gen_neon_unarrow_sats(int size, TCGv_i32 dest, TCGv_i64= src) -{ - switch (size) { - case 0: gen_helper_neon_unarrow_sat8(dest, cpu_env, src); break; - case 1: gen_helper_neon_unarrow_sat16(dest, cpu_env, src); break; - case 2: gen_helper_neon_unarrow_sat32(dest, cpu_env, src); break; - default: abort(); - } -} - static inline void gen_neon_widen(TCGv_i64 dest, TCGv_i32 src, int size, i= nt u) { if (u) { @@ -3035,24 +2995,6 @@ static inline void gen_neon_widen(TCGv_i64 dest, TCG= v_i32 src, int size, int u) tcg_temp_free_i32(src); } =20 -static void gen_neon_narrow_op(int op, int u, int size, - TCGv_i32 dest, TCGv_i64 src) -{ - if (op) { - if (u) { - gen_neon_unarrow_sats(size, dest, src); - } else { - gen_neon_narrow(size, dest, src); - } - } else { - if (u) { - gen_neon_narrow_satu(size, dest, src); - } else { - gen_neon_narrow_sats(size, dest, src); - } - } -} - /* Symbolic constants for op fields for Neon 2-register miscellaneous. * The values correspond to bits [17:16,10:7]; see the ARM ARM DDI0406B * table A7-13. @@ -4994,8 +4936,7 @@ static int disas_neon_data_insn(DisasContext *s, uint= 32_t insn) !arm_dc_feature(s, ARM_FEATURE_V8)) { return 1; } - if ((op !=3D NEON_2RM_VMOVN && op !=3D NEON_2RM_VQMOVN) && - q && ((rm | rd) & 1)) { + if (q && ((rm | rd) & 1)) { return 1; } switch (op) { @@ -5004,6 +4945,7 @@ static int disas_neon_data_insn(DisasContext *s, uint= 32_t insn) case NEON_2RM_VPADAL: case NEON_2RM_VPADAL_U: case NEON_2RM_VUZP: case NEON_2RM_VZIP: + case NEON_2RM_VMOVN: case NEON_2RM_VQMOVN: /* handled by decodetree */ return 1; case NEON_2RM_VTRN: @@ -5019,25 +4961,6 @@ static int disas_neon_data_insn(DisasContext *s, uin= t32_t insn) goto elementwise; } break; - case NEON_2RM_VMOVN: case NEON_2RM_VQMOVN: - /* also VQMOVUN; op field and mnemonics don't line up = */ - if (rm & 1) { - return 1; - } - tmp2 =3D NULL; - for (pass =3D 0; pass < 2; pass++) { - neon_load_reg64(cpu_V0, rm + pass); - tmp =3D tcg_temp_new_i32(); - gen_neon_narrow_op(op =3D=3D NEON_2RM_VMOVN, q, si= ze, - tmp, cpu_V0); - if (pass =3D=3D 0) { - tmp2 =3D tmp; - } else { - neon_store_reg(rd, 0, tmp2); - neon_store_reg(rd, 1, tmp); - } - } - break; case NEON_2RM_VSHLL: if (q || (rd & 1)) { return 1; --=20 2.20.1