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([172.58.27.160]) by smtp.gmail.com with ESMTPSA id ks23-20020ac86217000000b0042987f6874bsm2092281qtb.92.2024.01.10.14.44.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jan 2024 14:44:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1704926672; x=1705531472; 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=Xe6YKO+UBE6YLyYsW2AZ/tSAY+8N62/s82QricPcuNc=; b=wFJhcy9I/yiGbYJltig/zkhFNvAYKPMl4+EW9g9vuEC3zi2fA/9MtFILdwVwcYI6Mu 01B45V1A627L2KCyznlwMB2AdAegNfJ3HniKVIyEg2Z4U3M3nSlG3ueaguwdx/9V+9Jj +yLK9pINAKrvzVVBitO6RAcm/fQlOIlnskFpR2/gJYGKi6A94EScLqvmZ2fwMQAQbShb +JikKFdckrO8P+3UD4GDBkuL6l6HymAqDZvN/xFV4JMeTniL8ulPwyWphyrNZqRQ6ZTq 1jAHqXejymK30z9w0uguy+o8sLcaji7cyU0Sb4nUyVt0rZjnVG4aGUMDepLLfG8w/mPf j3HQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704926672; x=1705531472; 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=Xe6YKO+UBE6YLyYsW2AZ/tSAY+8N62/s82QricPcuNc=; b=FKwzbgQIyLA2gxPQuc5PJHacMVW1aPvQDuqj1yRGMddNZvC82L7QoH3cC92kkEaRI5 4NkLllKC2hDtIZSe1OJZn3UPMO5rhS8DU1cjOXImDoMJJB56z4wLtofkrRDu1zL+8HGe Trioqqqyd6Snbyh7mR3PhDunKmNqVIvlPEPHxrA8InSvVM9YUr2Xx/REby9VC2sU6q4k RIxHkX3MiMaQaaqh8Jh8Kw17yQgDhxP5Ln5HmLfNCnRqDdQYvstZJitJO7scy4dBaM/2 WyTfGWJw1Q/0Qpz1nFDR23vF0m8GD61pSdZDRCwaRgPIT6KvXRlRbQkEIKtxEn9M5LXn 2RYg== X-Gm-Message-State: AOJu0YwpYUeWV5ZkkdmLNp+Jp1Uig8T0WQJRgqkJzVsXDFhU7GXeTDpS 1zU++Qqr+M5a3TlQJLTduYOTuS1LBm2c8Cs3zoYjRxIeIwAVy5UF X-Google-Smtp-Source: AGHT+IF1NAYLCxPrmliUSTAMHtenYTsFl3jAjQdyboTTBD7FebGoowI3yPJew2vrKuYGxKF5VEINqg== X-Received: by 2002:a05:622a:15d6:b0:429:aac8:95d3 with SMTP id d22-20020a05622a15d600b00429aac895d3mr330462qty.45.1704926672212; Wed, 10 Jan 2024 14:44:32 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: philmd@linaro.org, pbonzini@redhat.com Subject: [PATCH v3 01/38] tcg: Introduce TCG_COND_TST{EQ,NE} Date: Thu, 11 Jan 2024 09:43:31 +1100 Message-Id: <20240110224408.10444-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240110224408.10444-1-richard.henderson@linaro.org> References: <20240110224408.10444-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::731; envelope-from=richard.henderson@linaro.org; helo=mail-qk1-x731.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, T_SCC_BODY_TEXT_LINE=-0.01 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: 1704926715175100004 Add the enumerators, adjust the helpers to match, and dump. Not supported anywhere else just yet. Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- docs/devel/tcg-ops.rst | 2 ++ include/tcg/tcg-cond.h | 74 ++++++++++++++++++++++++++++++------------ tcg/tcg.c | 4 ++- 3 files changed, 58 insertions(+), 22 deletions(-) diff --git a/docs/devel/tcg-ops.rst b/docs/devel/tcg-ops.rst index 8ae59ea02b..d46b625e0e 100644 --- a/docs/devel/tcg-ops.rst +++ b/docs/devel/tcg-ops.rst @@ -253,6 +253,8 @@ Jumps/Labels | ``TCG_COND_GEU /* unsigned */`` | ``TCG_COND_LEU /* unsigned */`` | ``TCG_COND_GTU /* unsigned */`` + | ``TCG_COND_TSTEQ /* t1 & t2 =3D=3D 0 */`` + | ``TCG_COND_TSTNE /* t1 & t2 !=3D 0 */`` =20 Arithmetic ---------- diff --git a/include/tcg/tcg-cond.h b/include/tcg/tcg-cond.h index 2a38a386d4..5cadbd6ff2 100644 --- a/include/tcg/tcg-cond.h +++ b/include/tcg/tcg-cond.h @@ -29,26 +29,34 @@ * Conditions. Note that these are laid out for easy manipulation by * the functions below: * bit 0 is used for inverting; - * bit 1 is signed, - * bit 2 is unsigned, - * bit 3 is used with bit 0 for swapping signed/unsigned. + * bit 1 is used for conditions that need swapping (signed/unsigned). + * bit 2 is used with bit 1 for swapping. + * bit 3 is used for unsigned conditions. */ typedef enum { /* non-signed */ TCG_COND_NEVER =3D 0 | 0 | 0 | 0, TCG_COND_ALWAYS =3D 0 | 0 | 0 | 1, + + /* equality */ TCG_COND_EQ =3D 8 | 0 | 0 | 0, TCG_COND_NE =3D 8 | 0 | 0 | 1, + + /* "test" i.e. and then compare vs 0 */ + TCG_COND_TSTEQ =3D 8 | 4 | 0 | 0, + TCG_COND_TSTNE =3D 8 | 4 | 0 | 1, + /* signed */ TCG_COND_LT =3D 0 | 0 | 2 | 0, TCG_COND_GE =3D 0 | 0 | 2 | 1, - TCG_COND_LE =3D 8 | 0 | 2 | 0, - TCG_COND_GT =3D 8 | 0 | 2 | 1, + TCG_COND_GT =3D 0 | 4 | 2 | 0, + TCG_COND_LE =3D 0 | 4 | 2 | 1, + /* unsigned */ - TCG_COND_LTU =3D 0 | 4 | 0 | 0, - TCG_COND_GEU =3D 0 | 4 | 0 | 1, - TCG_COND_LEU =3D 8 | 4 | 0 | 0, - TCG_COND_GTU =3D 8 | 4 | 0 | 1, + TCG_COND_LTU =3D 8 | 0 | 2 | 0, + TCG_COND_GEU =3D 8 | 0 | 2 | 1, + TCG_COND_GTU =3D 8 | 4 | 2 | 0, + TCG_COND_LEU =3D 8 | 4 | 2 | 1, } TCGCond; =20 /* Invert the sense of the comparison. */ @@ -60,25 +68,49 @@ static inline TCGCond tcg_invert_cond(TCGCond c) /* Swap the operands in a comparison. */ static inline TCGCond tcg_swap_cond(TCGCond c) { - return c & 6 ? (TCGCond)(c ^ 9) : c; + return (TCGCond)(c ^ ((c & 2) << 1)); } =20 -/* Create an "unsigned" version of a "signed" comparison. */ -static inline TCGCond tcg_unsigned_cond(TCGCond c) +/* Must a comparison be considered signed? */ +static inline bool is_signed_cond(TCGCond c) { - return c & 2 ? (TCGCond)(c ^ 6) : c; -} - -/* Create a "signed" version of an "unsigned" comparison. */ -static inline TCGCond tcg_signed_cond(TCGCond c) -{ - return c & 4 ? (TCGCond)(c ^ 6) : c; + return (c & (8 | 2)) =3D=3D 2; } =20 /* Must a comparison be considered unsigned? */ static inline bool is_unsigned_cond(TCGCond c) { - return (c & 4) !=3D 0; + return (c & (8 | 2)) =3D=3D (8 | 2); +} + +/* Must a comparison be considered a test? */ +static inline bool is_tst_cond(TCGCond c) +{ + return (c | 1) =3D=3D TCG_COND_TSTNE; +} + +/* Create an "unsigned" version of a "signed" comparison. */ +static inline TCGCond tcg_unsigned_cond(TCGCond c) +{ + return is_signed_cond(c) ? (TCGCond)(c + 8) : c; +} + +/* Create a "signed" version of an "unsigned" comparison. */ +static inline TCGCond tcg_signed_cond(TCGCond c) +{ + return is_unsigned_cond(c) ? (TCGCond)(c - 8) : c; +} + +/* Create the eq/ne version of a tsteq/tstne comparison. */ +static inline TCGCond tcg_tst_eqne_cond(TCGCond c) +{ + return is_tst_cond(c) ? (TCGCond)(c - 4) : c; +} + +/* Create the lt/ge version of a tstne/tsteq comparison of the sign. */ +static inline TCGCond tcg_tst_ltge_cond(TCGCond c) +{ + return is_tst_cond(c) ? (TCGCond)(c ^ 0xf) : c; } =20 /* @@ -92,7 +124,7 @@ static inline TCGCond tcg_high_cond(TCGCond c) case TCG_COND_LE: case TCG_COND_GEU: case TCG_COND_LEU: - return (TCGCond)(c ^ 8); + return (TCGCond)(c ^ (4 | 1)); default: return c; } diff --git a/tcg/tcg.c b/tcg/tcg.c index e2c38f6d11..9d146b13aa 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -2482,7 +2482,9 @@ static const char * const cond_name[] =3D [TCG_COND_LTU] =3D "ltu", [TCG_COND_GEU] =3D "geu", [TCG_COND_LEU] =3D "leu", - [TCG_COND_GTU] =3D "gtu" + [TCG_COND_GTU] =3D "gtu", + [TCG_COND_TSTEQ] =3D "tsteq", + [TCG_COND_TSTNE] =3D "tstne", }; =20 static const char * const ldst_name[(MO_BSWAP | MO_SSIZE) + 1] =3D --=20 2.34.1