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([172.58.27.160]) by smtp.gmail.com with ESMTPSA id ks23-20020ac86217000000b0042987f6874bsm2092281qtb.92.2024.01.10.14.45.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jan 2024 14:45:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1704926727; x=1705531527; 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=/Mi02s/8pPhslq92YCDg9owTXJVUIjB51aqomHFCjPA=; b=UFG6cNwE2nYjK72QtMVbbEHP1lnq6X+5vqew8499JX0guQ+h1tLEciNXnleoEzIdN2 ZIOwyu0tjs53t1T7YAFZNkvxVQTe/49vHGYknCN5Vh9oj+fo1nTJHwv9WOlDDNC+Gu8w rhy/zq2ZLSQFqDGYvJ5SMqGtrQj7x+DrXceoowxqFnjmr/FI4pn+yZH8P3/bcAsfm2Mm DXU8Hzz2ZzIw2DX3Zh3qXGRp0vC8diSIYXk2rvaSfvE/wG9+SUryy3Klk6oy+WHPYCU6 0gcDcVhvQl8SPz4MrhfRZe0POFBdNQveuRK4F9kWMgHG0atKpGYJySw/VHA3fM91B0O8 vv4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704926727; x=1705531527; 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=/Mi02s/8pPhslq92YCDg9owTXJVUIjB51aqomHFCjPA=; b=lXsIIgd1heKGzQ13QXc4DbJqkNP+69mDYLfqxG3fsFRWuKZ8Jl5HIoORZsFbbaLaSP 3Yq+FVjJ55PB4XJltrGqzW9GuzIjP/ruzJu3QBuyKHxPRq0AdE5X7XpgvNKxxz+GdFcG 4Uf5vwskuFYV4DkOndQlZmc3qumYTkv25SFAcmQeV1HIZYgdasyo/63gfHkFS0u6emFn NCClukPre6LFp1kveGSMyA5BwknyKZTmsiXkOWcyHK1k45muK7HZWNQfz5F9ZosHswsJ bl0v+1Y2Jo97OH2ya+OQlie9yBlpE4hqdG1pLkYnJwOw7kHpecvATa4f1jOFbo6mxXju ypaA== X-Gm-Message-State: AOJu0YzfhJ258NRoHRR8uMcNLb102+PcXFCVEag56IZUqd3xi5r8CYLR DL9VceGsqoK5XKa2JLlmeDf1WNO1v0ZnCtSusi8+B0LvECxo0reU X-Google-Smtp-Source: AGHT+IGKypzb+F1Ao0IiRN76RS4P8UOOH42hixf+LFKc8wtWQ9lIowdjVCeZ6UdsHUgefUA9nldHtQ== X-Received: by 2002:a05:622a:e:b0:429:bb88:6f1e with SMTP id x14-20020a05622a000e00b00429bb886f1emr252029qtw.118.1704926727080; Wed, 10 Jan 2024 14:45:27 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: philmd@linaro.org, pbonzini@redhat.com Subject: [PATCH v3 11/38] target/alpha: Use TCG_COND_TSTNE for gen_fold_mzero Date: Thu, 11 Jan 2024 09:43:41 +1100 Message-Id: <20240110224408.10444-12-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::832; envelope-from=richard.henderson@linaro.org; helo=mail-qt1-x832.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: 1704926815191100003 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- target/alpha/translate.c | 49 +++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 26 deletions(-) diff --git a/target/alpha/translate.c b/target/alpha/translate.c index c7daf46de7..c68c2bcd21 100644 --- a/target/alpha/translate.c +++ b/target/alpha/translate.c @@ -490,56 +490,53 @@ static DisasJumpType gen_bcond(DisasContext *ctx, TCG= Cond cond, int ra, =20 /* Fold -0.0 for comparison with COND. */ =20 -static void gen_fold_mzero(TCGCond cond, TCGv dest, TCGv src) +static TCGv_i64 gen_fold_mzero(TCGCond *pcond, uint64_t *pimm, TCGv_i64 sr= c) { - uint64_t mzero =3D 1ull << 63; + TCGv_i64 tmp; =20 - switch (cond) { + *pimm =3D 0; + switch (*pcond) { case TCG_COND_LE: case TCG_COND_GT: /* For <=3D or >, the -0.0 value directly compares the way we want= . */ - tcg_gen_mov_i64(dest, src); - break; + return src; =20 case TCG_COND_EQ: case TCG_COND_NE: - /* For =3D=3D or !=3D, we can simply mask off the sign bit and com= pare. */ - tcg_gen_andi_i64(dest, src, mzero - 1); - break; + /* For =3D=3D or !=3D, we can compare without the sign bit. */ + *pcond =3D *pcond =3D=3D TCG_COND_EQ ? TCG_COND_TSTEQ : TCG_COND_T= STNE; + *pimm =3D INT64_MAX; + return src; =20 case TCG_COND_GE: case TCG_COND_LT: /* For >=3D or <, map -0.0 to +0.0. */ - tcg_gen_movcond_i64(TCG_COND_NE, dest, src, tcg_constant_i64(mzero= ), - src, tcg_constant_i64(0)); - break; + tmp =3D tcg_temp_new_i64(); + tcg_gen_movcond_i64(TCG_COND_EQ, tmp, + src, tcg_constant_i64(INT64_MIN), + tcg_constant_i64(0), src); + return tmp; =20 default: - abort(); + g_assert_not_reached(); } } =20 static DisasJumpType gen_fbcond(DisasContext *ctx, TCGCond cond, int ra, int32_t disp) { - TCGv cmp_tmp =3D tcg_temp_new(); - DisasJumpType ret; - - gen_fold_mzero(cond, cmp_tmp, load_fpr(ctx, ra)); - ret =3D gen_bcond_internal(ctx, cond, cmp_tmp, 0, disp); - return ret; + uint64_t imm; + TCGv_i64 tmp =3D gen_fold_mzero(&cond, &imm, load_fpr(ctx, ra)); + return gen_bcond_internal(ctx, cond, tmp, imm, disp); } =20 static void gen_fcmov(DisasContext *ctx, TCGCond cond, int ra, int rb, int= rc) { - TCGv_i64 va, vb, z; - - z =3D load_zero(ctx); - vb =3D load_fpr(ctx, rb); - va =3D tcg_temp_new(); - gen_fold_mzero(cond, va, load_fpr(ctx, ra)); - - tcg_gen_movcond_i64(cond, dest_fpr(ctx, rc), va, z, vb, load_fpr(ctx, = rc)); + uint64_t imm; + TCGv_i64 tmp =3D gen_fold_mzero(&cond, &imm, load_fpr(ctx, ra)); + tcg_gen_movcond_i64(cond, dest_fpr(ctx, rc), + tmp, tcg_constant_i64(imm), + load_fpr(ctx, rb), load_fpr(ctx, rc)); } =20 #define QUAL_RM_N 0x080 /* Round mode nearest even */ --=20 2.34.1