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[187.189.51.143]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-71dc497ee8fsm1925198a34.39.2024.12.08.14.49.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 Dec 2024 14:49:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1733698142; x=1734302942; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9Y0A1gv0BAn4m7bTh6rSrOLuj4Co5Ym2ALez6VlQLvI=; b=i+R0P7fwZfPHtkIn/zDQGhjrks9GVMg5sABNAQ5U3e2Ac2XkGzwNv4ncpIiMNuX7RY 5RtLlNflTHyINMdDBEM1zjUp9tjWYBBmLNUE5KJFz8DdTczHIdIDd0J0Xhh4qp+89K7U XoOwWPLgMDRH32ThwdHMBPtrDbFY8N0nqwbNB1N+dBL67U+Fo3d3bO9PWdjuFSMVWmqR 7iFoU3nw7/A8g3u9rUYYMYp5uOOMk/M4SsAjckNirKSuRult4MNmppfff9osUKKjJ6TU 5Yc6SfwgCYmLE5MTiDfJumSsKLN9DsLhfR5A+mUGibJuk2Xgm7s9XLQUQ3aDpHRB9buK U8Nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733698142; x=1734302942; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9Y0A1gv0BAn4m7bTh6rSrOLuj4Co5Ym2ALez6VlQLvI=; b=xH8dRsy+ve7oxCM/p6OqnVtKSruByONjyBEZ47T1uX7nl+vxZkYtlR+qqypatxRtlK q9DWsyNTZA6+D4VOvBubLwaZu3qhAnu0aQY9jVTW2lCughjYP66aWKE1yApO/8tngpZL c5kLWoSvQc4Z6cYw1mc/Isl7F90PK5hFTH8isCf9rSl/k5aBMr/3E/Hk3HCINpCXGv57 axk4YefC+a8IFQNeBWTmDC6VLAatByo/tJXZOs2cn6H5v5r9z235xurXgt1zTxiG11lN +c4vfP9YudixO3xOOqy6LKtUeuvO378IsLzAAMo+vjmdrQrQuSWTjbDo8oh7R1XoFF8T AmWA== X-Gm-Message-State: AOJu0Yzo/ZMCClz1D6wH1t9jVpQLp/eCedsSRvV7D33RNJXKIf7nIjM7 CNypVoric82BhnT1kEMG+eTMqOhrcScCHiasgOnY3j7LG5g5DX5nYM9+kOJyGNtTO45fIbHwZ1o E6kBbYg== X-Gm-Gg: ASbGncvhK/sk0qvz6tNYPPlu6fbA/TgPtv/XQao8phdbL7wRV8zxKe9Vj9ZLMl/tNQI 88dpmRUxOrtEZ3c8nsCIUYIM+pstiRiNELbJsA6YFYFmT1Vf/OdZY9Iyh1rl6hFVbnGo4bp+s5x 0A5080uf0k4uoKfjoAzSYV+kQ7SpilpCOJvbqxstXOsCTeqJ+QWxTRbI3pUSe4hrhyj/o7asPEh +X7LUtiuJDymC0OZbX71gfw36Y1qGm/X20EElTouF2EfXLZijGum3FcDV17AsHHAEdc062ucSNH vxzWWtnvFkcLHFFyY71sxzMQC4MHJYPN0qDx X-Google-Smtp-Source: AGHT+IGUVzw1oRp4ehl01bFZPiekHomE6JS6GZP7zB44IpYnOhITU6Zj/CCvFws497tk4xMukUpOUw== X-Received: by 2002:a05:6808:3012:b0:3e8:1ed7:e6cf with SMTP id 5614622812f47-3eb19c004aamr5545414b6e.7.1733698142464; Sun, 08 Dec 2024 14:49:02 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: bcain@oss.qualcomm.com, peter.maydell@linaro.org, mark.cave-ayland@ilande.co.uk Subject: [PATCH 13/17] target/hexagon: Expand GEN_XF_ROUND Date: Sun, 8 Dec 2024 16:48:40 -0600 Message-ID: <20241208224844.570491-14-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241208224844.570491-1-richard.henderson@linaro.org> References: <20241208224844.570491-1-richard.henderson@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=2607:f8b0:4864:20::32c; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x32c.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=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1733698305275116600 Content-Type: text/plain; charset="utf-8" This massive macro is now only used once. Expand it for use only by float64. Signed-off-by: Richard Henderson Reviewed-by: Brian Cain --- target/hexagon/fma_emu.c | 253 +++++++++++++++++++-------------------- 1 file changed, 125 insertions(+), 128 deletions(-) diff --git a/target/hexagon/fma_emu.c b/target/hexagon/fma_emu.c index 0c7c7f636c..bce3bd4dfb 100644 --- a/target/hexagon/fma_emu.c +++ b/target/hexagon/fma_emu.c @@ -354,136 +354,133 @@ float32 infinite_float32(uint8_t sign) } =20 /* Return a maximum finite value with the requested sign */ -#define GEN_XF_ROUND(SUFFIX, MANTBITS, INF_EXP, INTERNAL_TYPE) \ -static SUFFIX accum_round_##SUFFIX(Accum a, float_status * fp_status) \ -{ \ - if ((int128_gethi(a.mant) =3D=3D 0) && (int128_getlo(a.mant) =3D=3D 0)= \ - && ((a.guard | a.round | a.sticky) =3D=3D 0)) { \ - /* result zero */ \ - switch (fp_status->float_rounding_mode) { \ - case float_round_down: \ - return zero_##SUFFIX(1); \ - default: \ - return zero_##SUFFIX(0); \ - } \ - } \ - /* Normalize right */ \ - /* We want MANTBITS bits of mantissa plus the leading one. */ \ - /* That means that we want MANTBITS+1 bits, or 0x000000000000FF_FFFF *= / \ - /* So we need to normalize right while the high word is non-zero and \ - * while the low word is nonzero when masked with 0xffe0_0000_0000_0000= */ \ - while ((int128_gethi(a.mant) !=3D 0) || \ - ((int128_getlo(a.mant) >> (MANTBITS + 1)) !=3D 0)) { \ - a =3D accum_norm_right(a, 1); \ - } \ - /* \ - * OK, now normalize left \ - * We want to normalize left until we have a leading one in bit 24 \ - * Theoretically, we only need to shift a maximum of one to the left i= f we \ - * shifted out lots of bits from B, or if we had no shift / 1 shift st= icky \ - * should be 0 \ - */ \ - while ((int128_getlo(a.mant) & (1ULL << MANTBITS)) =3D=3D 0) { \ - a =3D accum_norm_left(a); \ - } \ - /* \ - * OK, now we might need to denormalize because of potential underflow= . \ - * We need to do this before rounding, and rounding might make us norm= al \ - * again \ - */ \ - while (a.exp <=3D 0) { \ - a =3D accum_norm_right(a, 1 - a.exp); \ - /* \ - * Do we have underflow? \ - * That's when we get an inexact answer because we ran out of bits= \ - * in a denormal. \ - */ \ - if (a.guard || a.round || a.sticky) { \ - float_raise(float_flag_underflow, fp_status); \ - } \ - } \ - /* OK, we're relatively canonical... now we need to round */ \ - if (a.guard || a.round || a.sticky) { \ - float_raise(float_flag_inexact, fp_status); \ - switch (fp_status->float_rounding_mode) { \ - case float_round_to_zero: \ - /* Chop and we're done */ \ - break; \ - case float_round_up: \ - if (a.sign =3D=3D 0) { \ - a.mant =3D int128_add(a.mant, int128_one()); \ - } \ - break; \ - case float_round_down: \ - if (a.sign !=3D 0) { \ - a.mant =3D int128_add(a.mant, int128_one()); \ - } \ - break; \ - default: \ - if (a.round || a.sticky) { \ - /* round up if guard is 1, down if guard is zero */ \ - a.mant =3D int128_add(a.mant, int128_make64(a.guard)); \ - } else if (a.guard) { \ - /* exactly .5, round up if odd */ \ - a.mant =3D int128_add(a.mant, int128_and(a.mant, int128_on= e())); \ - } \ - break; \ - } \ - } \ - /* \ - * OK, now we might have carried all the way up. \ - * So we might need to shr once \ - * at least we know that the lsb should be zero if we rounded and \ - * got a carry out... \ - */ \ - if ((int128_getlo(a.mant) >> (MANTBITS + 1)) !=3D 0) { \ - a =3D accum_norm_right(a, 1); \ - } \ - /* Overflow? */ \ - if (a.exp >=3D INF_EXP) { \ - /* Yep, inf result */ \ - float_raise(float_flag_overflow, fp_status); \ - float_raise(float_flag_inexact, fp_status); \ - switch (fp_status->float_rounding_mode) { \ - case float_round_to_zero: \ - return maxfinite_##SUFFIX(a.sign); \ - case float_round_up: \ - if (a.sign =3D=3D 0) { \ - return infinite_##SUFFIX(a.sign); \ - } else { \ - return maxfinite_##SUFFIX(a.sign); \ - } \ - case float_round_down: \ - if (a.sign !=3D 0) { \ - return infinite_##SUFFIX(a.sign); \ - } else { \ - return maxfinite_##SUFFIX(a.sign); \ - } \ - default: \ - return infinite_##SUFFIX(a.sign); \ - } \ - } \ - /* Underflow? */ \ - if (int128_getlo(a.mant) & (1ULL << MANTBITS)) { \ - /* Leading one means: No, we're normal. So, we should be done... *= / \ - INTERNAL_TYPE ret; \ - ret.i =3D 0; \ - ret.sign =3D a.sign; \ - ret.exp =3D a.exp; \ - ret.mant =3D int128_getlo(a.mant); \ - return ret.i; \ - } \ - assert(a.exp =3D=3D 1); \ - INTERNAL_TYPE ret; \ - ret.i =3D 0; \ - ret.sign =3D a.sign; \ - ret.exp =3D 0; \ - ret.mant =3D int128_getlo(a.mant); \ - return ret.i; \ +static float64 accum_round_float64(Accum a, float_status * fp_status) +{ + if ((int128_gethi(a.mant) =3D=3D 0) && (int128_getlo(a.mant) =3D=3D 0) + && ((a.guard | a.round | a.sticky) =3D=3D 0)) { + /* result zero */ + switch (fp_status->float_rounding_mode) { + case float_round_down: + return zero_float64(1); + default: + return zero_float64(0); + } + } + /* Normalize right */ + /* We want DF_MANTBITS bits of mantissa plus the leading one. */ + /* That means that we want DF_MANTBITS+1 bits, or 0x000000000000FF_FFF= F */ + /* So we need to normalize right while the high word is non-zero and + * while the low word is nonzero when masked with 0xffe0_0000_0000_0000= */ + while ((int128_gethi(a.mant) !=3D 0) || + ((int128_getlo(a.mant) >> (DF_MANTBITS + 1)) !=3D 0)) { + a =3D accum_norm_right(a, 1); + } + /* + * OK, now normalize left + * We want to normalize left until we have a leading one in bit 24 + * Theoretically, we only need to shift a maximum of one to the left i= f we + * shifted out lots of bits from B, or if we had no shift / 1 shift st= icky + * should be 0 + */ + while ((int128_getlo(a.mant) & (1ULL << DF_MANTBITS)) =3D=3D 0) { + a =3D accum_norm_left(a); + } + /* + * OK, now we might need to denormalize because of potential underflow. + * We need to do this before rounding, and rounding might make us norm= al + * again + */ + while (a.exp <=3D 0) { + a =3D accum_norm_right(a, 1 - a.exp); + /* + * Do we have underflow? + * That's when we get an inexact answer because we ran out of bits + * in a denormal. + */ + if (a.guard || a.round || a.sticky) { + float_raise(float_flag_underflow, fp_status); + } + } + /* OK, we're relatively canonical... now we need to round */ + if (a.guard || a.round || a.sticky) { + float_raise(float_flag_inexact, fp_status); + switch (fp_status->float_rounding_mode) { + case float_round_to_zero: + /* Chop and we're done */ + break; + case float_round_up: + if (a.sign =3D=3D 0) { + a.mant =3D int128_add(a.mant, int128_one()); + } + break; + case float_round_down: + if (a.sign !=3D 0) { + a.mant =3D int128_add(a.mant, int128_one()); + } + break; + default: + if (a.round || a.sticky) { + /* round up if guard is 1, down if guard is zero */ + a.mant =3D int128_add(a.mant, int128_make64(a.guard)); + } else if (a.guard) { + /* exactly .5, round up if odd */ + a.mant =3D int128_add(a.mant, int128_and(a.mant, int128_on= e())); + } + break; + } + } + /* + * OK, now we might have carried all the way up. + * So we might need to shr once + * at least we know that the lsb should be zero if we rounded and + * got a carry out... + */ + if ((int128_getlo(a.mant) >> (DF_MANTBITS + 1)) !=3D 0) { + a =3D accum_norm_right(a, 1); + } + /* Overflow? */ + if (a.exp >=3D DF_INF_EXP) { + /* Yep, inf result */ + float_raise(float_flag_overflow, fp_status); + float_raise(float_flag_inexact, fp_status); + switch (fp_status->float_rounding_mode) { + case float_round_to_zero: + return maxfinite_float64(a.sign); + case float_round_up: + if (a.sign =3D=3D 0) { + return infinite_float64(a.sign); + } else { + return maxfinite_float64(a.sign); + } + case float_round_down: + if (a.sign !=3D 0) { + return infinite_float64(a.sign); + } else { + return maxfinite_float64(a.sign); + } + default: + return infinite_float64(a.sign); + } + } + /* Underflow? */ + if (int128_getlo(a.mant) & (1ULL << DF_MANTBITS)) { + /* Leading one means: No, we're normal. So, we should be done... */ + Double ret; + ret.i =3D 0; + ret.sign =3D a.sign; + ret.exp =3D a.exp; + ret.mant =3D int128_getlo(a.mant); + return ret.i; + } + assert(a.exp =3D=3D 1); + Double ret; + ret.i =3D 0; + ret.sign =3D a.sign; + ret.exp =3D 0; + ret.mant =3D int128_getlo(a.mant); + return ret.i; } =20 -GEN_XF_ROUND(float64, DF_MANTBITS, DF_INF_EXP, Double) - float64 internal_mpyhh(float64 a, float64 b, unsigned long long int accumulated, float_status *fp_status) --=20 2.43.0