From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE44FC2B9F8 for ; Tue, 25 May 2021 16:59:47 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 591C5613FA for ; Tue, 25 May 2021 16:59:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 591C5613FA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:38888 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1llaPC-0002ik-EX for qemu-devel@archiver.kernel.org; Tue, 25 May 2021 12:59:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35032) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llYp8-00030g-R8 for qemu-devel@nongnu.org; Tue, 25 May 2021 11:18:26 -0400 Received: from mail-wm1-x333.google.com ([2a00:1450:4864:20::333]:40643) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1llYou-0004sY-QI for qemu-devel@nongnu.org; Tue, 25 May 2021 11:18:23 -0400 Received: by mail-wm1-x333.google.com with SMTP id f6-20020a1c1f060000b0290175ca89f698so13689174wmf.5 for ; Tue, 25 May 2021 08:18:12 -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=6+mqRQYfZFKZLLFszyKbdHLFXBW87Bl2geG1X0ZO8hY=; b=dDV7rI06gkIT1fUVO9kAyXOs3sjTe5dkqD+02bXOZ9YmO750GD5yaSeyQnIskMbODe HBRjXZdTf/1/fCBjtTgSh85G15bsl06l5xBMr+iZPVJc/AiyyaBXwGsixGVjggvZptH2 PO67UFKP6nZDcZdmPs4eS07mKHJrG7PfAhzxTmaO1OG9eXfWu5R+NQjdKWYKCIYoGVXg 0uXTFUdA+ozVd//iv2jTOsYwPyXrARE6UtLmkcNHFuzxWkizobRfatcn5x0wvggxxGIe IWo3LpymYSgPrUG+5svdmUK5YiZPS7s0rvO8arfGrnEDGhVg/ymIv4uILxMPc/hnLx3D 0ZQw== 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=6+mqRQYfZFKZLLFszyKbdHLFXBW87Bl2geG1X0ZO8hY=; b=tCuD7rAha4HSBcIRYxlIhphgmHeg+zVT9P+heBvjpAn2k708Y6zYa6Yw8rJBxxf3kX kFA7lHouhORQBZVytKXbYPbyd549XI3pl0+51A5iTS/xH/+123ccdQq09UW2sLlH1FnH iw3+spnD/EmijFAJmh73UhUtC+OguhdIFLpNwdLHhI0+ijKgCkoGOHpO+8AdDHPMPRdr sS++ZLyHDHQoodfG1xifauZf9AW0hIdq8H8Zq71DVrrKAjUQ4Nj+3LlSqSV2bx7CegT3 /3WT934IiHG/tX99N/vah6Zuln/xr67USKTFeM6S5bMr0R8Iytmmkx9X8crFVvjbP2ZA Rf/Q== X-Gm-Message-State: AOAM531O4yIHBKH8aRxvnizQiUj9QzFVNIt50Jl/vI9NjK01YwYtVKhF eW9+ok5aD1cffM8tkVddBgVlxw+PM47mj7ck X-Google-Smtp-Source: ABdhPJz48szpURJkeRMMQuN4TMSmZmtOKbeZH4XQZx88tqiXX2orW5MQsvRZ6vLzRHYTntc6j9iamQ== X-Received: by 2002:a1c:f60f:: with SMTP id w15mr4347522wmc.5.1621955262061; Tue, 25 May 2021 08:07:42 -0700 (PDT) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id a11sm16643357wrr.48.2021.05.25.08.07.39 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 May 2021 08:07:39 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 097/114] target/arm: Implement SVE2 FLOGB Date: Tue, 25 May 2021 16:07:19 +0100 Message-Id: <20210525150736.32695-3-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210525150736.32695-1-peter.maydell@linaro.org> References: <20210525150736.32695-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::333; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x333.google.com 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=unavailable autolearn_force=no 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Stephen Long Signed-off-by: Stephen Long Signed-off-by: Richard Henderson Message-id: 20210525010358.152808-76-richard.henderson@linaro.org Message-Id: <20200430191405.21641-1-steplong@quicinc.com> Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- target/arm/helper-sve.h | 4 ++ target/arm/sve.decode | 3 ++ target/arm/sve_helper.c | 88 ++++++++++++++++++++++++++++++++++++++ target/arm/translate-sve.c | 24 +++++++++++ 4 files changed, 119 insertions(+) diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h index be4b17f1c2e..342bb837214 100644 --- a/target/arm/helper-sve.h +++ b/target/arm/helper-sve.h @@ -2754,3 +2754,7 @@ DEF_HELPER_FLAGS_5(sve2_fcvtlt_hs, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) DEF_HELPER_FLAGS_5(sve2_fcvtlt_sd, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) + +DEF_HELPER_FLAGS_5(flogb_h, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(flogb_s, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) +DEF_HELPER_FLAGS_5(flogb_d, TCG_CALL_NO_RWG, void, ptr, ptr, ptr, ptr, i32) diff --git a/target/arm/sve.decode b/target/arm/sve.decode index 5dcc79759e0..5a1cceccb60 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -1588,3 +1588,6 @@ FCVTNT_sh 01100100 10 0010 00 101 ... ..... ..... @rd_pg_rn_e0 FCVTLT_hs 01100100 10 0010 01 101 ... ..... ..... @rd_pg_rn_e0 FCVTNT_ds 01100100 11 0010 10 101 ... ..... ..... @rd_pg_rn_e0 FCVTLT_sd 01100100 11 0010 11 101 ... ..... ..... @rd_pg_rn_e0 + +### SVE2 floating-point convert to integer +FLOGB 01100101 00 011 esz:2 0101 pg:3 rn:5 rd:5 &rpr_esz diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index 88823935156..a0518549849 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -4729,6 +4729,94 @@ DO_ZPZ_FP(sve_ucvt_dh, uint64_t, , uint64_to_float16) DO_ZPZ_FP(sve_ucvt_ds, uint64_t, , uint64_to_float32) DO_ZPZ_FP(sve_ucvt_dd, uint64_t, , uint64_to_float64) +static int16_t do_float16_logb_as_int(float16 a, float_status *s) +{ + /* Extract frac to the top of the uint32_t. */ + uint32_t frac = (uint32_t)a << (16 + 6); + int16_t exp = extract32(a, 10, 5); + + if (unlikely(exp == 0)) { + if (frac != 0) { + if (!get_flush_inputs_to_zero(s)) { + /* denormal: bias - fractional_zeros */ + return -15 - clz32(frac); + } + /* flush to zero */ + float_raise(float_flag_input_denormal, s); + } + } else if (unlikely(exp == 0x1f)) { + if (frac == 0) { + return INT16_MAX; /* infinity */ + } + } else { + /* normal: exp - bias */ + return exp - 15; + } + /* nan or zero */ + float_raise(float_flag_invalid, s); + return INT16_MIN; +} + +static int32_t do_float32_logb_as_int(float32 a, float_status *s) +{ + /* Extract frac to the top of the uint32_t. */ + uint32_t frac = a << 9; + int32_t exp = extract32(a, 23, 8); + + if (unlikely(exp == 0)) { + if (frac != 0) { + if (!get_flush_inputs_to_zero(s)) { + /* denormal: bias - fractional_zeros */ + return -127 - clz32(frac); + } + /* flush to zero */ + float_raise(float_flag_input_denormal, s); + } + } else if (unlikely(exp == 0xff)) { + if (frac == 0) { + return INT32_MAX; /* infinity */ + } + } else { + /* normal: exp - bias */ + return exp - 127; + } + /* nan or zero */ + float_raise(float_flag_invalid, s); + return INT32_MIN; +} + +static int64_t do_float64_logb_as_int(float64 a, float_status *s) +{ + /* Extract frac to the top of the uint64_t. */ + uint64_t frac = a << 12; + int64_t exp = extract64(a, 52, 11); + + if (unlikely(exp == 0)) { + if (frac != 0) { + if (!get_flush_inputs_to_zero(s)) { + /* denormal: bias - fractional_zeros */ + return -1023 - clz64(frac); + } + /* flush to zero */ + float_raise(float_flag_input_denormal, s); + } + } else if (unlikely(exp == 0x7ff)) { + if (frac == 0) { + return INT64_MAX; /* infinity */ + } + } else { + /* normal: exp - bias */ + return exp - 1023; + } + /* nan or zero */ + float_raise(float_flag_invalid, s); + return INT64_MIN; +} + +DO_ZPZ_FP(flogb_h, float16, H1_2, do_float16_logb_as_int) +DO_ZPZ_FP(flogb_s, float32, H1_4, do_float32_logb_as_int) +DO_ZPZ_FP(flogb_d, float64, , do_float64_logb_as_int) + #undef DO_ZPZ_FP static void do_fmla_zpzzz_h(void *vd, void *vn, void *vm, void *va, void *vg, diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index 0a2718c4810..3ea51a73d36 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -8307,3 +8307,27 @@ static bool trans_FCVTXNT_ds(DisasContext *s, arg_rpr_esz *a) } return do_frint_mode(s, a, float_round_to_odd, gen_helper_sve2_fcvtnt_ds); } + +static bool trans_FLOGB(DisasContext *s, arg_rpr_esz *a) +{ + static gen_helper_gvec_3_ptr * const fns[] = { + NULL, gen_helper_flogb_h, + gen_helper_flogb_s, gen_helper_flogb_d + }; + + if (!dc_isar_feature(aa64_sve2, s) || fns[a->esz] == NULL) { + return false; + } + if (sve_access_check(s)) { + TCGv_ptr status = + fpstatus_ptr(a->esz == MO_16 ? FPST_FPCR_F16 : FPST_FPCR); + unsigned vsz = vec_full_reg_size(s); + + tcg_gen_gvec_3_ptr(vec_full_reg_offset(s, a->rd), + vec_full_reg_offset(s, a->rn), + pred_full_reg_offset(s, a->pg), + status, vsz, vsz, 0, fns[a->esz]); + tcg_temp_free_ptr(status); + } + return true; +} -- 2.20.1