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([71.212.144.252]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-219dc971814sm58461385ad.79.2024.12.22.08.24.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Dec 2024 08:24:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1734884696; x=1735489496; 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=0oaZkc61YjhIqFxlOS5XCCj6BwBkqMgp5zn8nsQHErI=; b=B3vLcZfGfGs9I+0/ZsCzS93rA50Kso4hsoWwP3aGVt6dMtY/U1DTKj7ORM/BZNLk1q 1gNBl3+AlaxGRcmkpLVgHbjalUjcwJ+U6Dd63chB9/S1W0msDVcfELhHr4lAQ8X7st9z 4OS1MZrFhJRq3bGHxWkUxFW62o9SnXhACzoJQG9L6R3W7Trj5Q9qBPkDrTET8wbDORZp goCqyuKFhj3mqZ3PgpbbbktHD+7hDAERl0a204nZwePIVq2eE6esgvbx4Obt4/FLiphx Xguwo11J8R6nNZLU4g0yiCCR7RB59Sn7zq0N6UXmTf9BnKRbseDst1rtb77o4pKjAqQD UTUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734884696; x=1735489496; 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=0oaZkc61YjhIqFxlOS5XCCj6BwBkqMgp5zn8nsQHErI=; b=E/ipBDdNvtaimN4ZGpjsNNXQILcfDKV379RPRq7MuHXLUGf+8KU940AZx59dqR8a84 QxVIZAORCR8Au0xgGXcS5NLFdMyz0IEYByFpdtd9SZzj1z1wH9MXAs2Ci42WkZpdY8fH RHqDk7Rhx77vX+dnlKTRXRXJIKWwH15CWW093xnPTdKtqrDXq+XfEvIRmII29QZ1fezE BmeqtM9PztVKGBNX2HOdDxKO8IMq99e455gMEL4OOxzbPOUWlLpn22SHVBGDsSXrvRsy V2rCIcFYiVFWcb3mRMmpvcP26NnuR75l3KEg3pEx6JlRUDgxzbqhp4sy75L94FFwb9Cx AwGA== X-Gm-Message-State: AOJu0YyyIGrBdzJ9T/q2AkxxRM8YpmfTeZbI6iqSbyD5uDL3WmUdYeoa oOX58akf7elCJK4Q/4j4ViVX6XAzRyO6cmFaI0H+wh4z2WemEBukEHvQrQL3oTAQP/argf1xJpZ BhFs= X-Gm-Gg: ASbGncsC+M9kXN2XLTRxvNVm+rgWh/SSmd2jhVHmbLZVWEXBM8rW/7fDCEsDaen9X5J KyenZ5JaLn+88/OK0Q/c8BrksWXKWCwu/RqV1PRiVXHkii+VKHxYBswowVDYr27eQHLn3Yew8Eb p3k2qiJb5ctUeHKp+W0+qDAm9979Q4PzaaCeK4LbDaa6Wzi+eNvJLGyTUwjJKDHz4CRA9TFV3Do yD8srQdGhDfuMy5RORyEFLAPuy/Bm+eohpFc2+K8kVw7bUaUZD2gHc/ndKsduw= X-Google-Smtp-Source: AGHT+IFgxIKD/q1JF6tKdo0zJUG7yTlWth6Aa1grNjjeL3gbh/HhG+YHTcH1R/g+C01oZmERIWymqg== X-Received: by 2002:a17:903:94e:b0:215:96bc:b670 with SMTP id d9443c01a7336-219e6e9df70mr131406885ad.18.1734884696678; Sun, 22 Dec 2024 08:24:56 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Pierrick Bouvier Subject: [PATCH v3 14/51] tcg/optimize: Compute sign mask in fold_deposit Date: Sun, 22 Dec 2024 08:24:09 -0800 Message-ID: <20241222162446.2415717-15-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241222162446.2415717-1-richard.henderson@linaro.org> References: <20241222162446.2415717-1-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::635; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x635.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: 1734884733992116600 Content-Type: text/plain; charset="utf-8" The input which overlaps the sign bit of the output can have its input s_mask propagated to the output s_mask. Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- tcg/optimize.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index 0f7c2c810e..b6a0bfe64e 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1613,8 +1613,9 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op) TempOptInfo *t2 =3D arg_info(op->args[2]); int ofs =3D op->args[3]; int len =3D op->args[4]; + int width; TCGOpcode and_opc; - uint64_t z_mask; + uint64_t z_mask, s_mask; =20 if (t1->is_const && t2->is_const) { return tcg_opt_gen_movi(ctx, op, op->args[0], @@ -1624,9 +1625,11 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op) switch (ctx->type) { case TCG_TYPE_I32: and_opc =3D INDEX_op_and_i32; + width =3D 32; break; case TCG_TYPE_I64: and_opc =3D INDEX_op_and_i64; + width =3D 64; break; default: g_assert_not_reached(); @@ -1651,8 +1654,15 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op) return fold_and(ctx, op); } =20 + /* The s_mask from the top portion of the deposit is still valid. */ + if (ofs + len =3D=3D width) { + s_mask =3D t2->s_mask << ofs; + } else { + s_mask =3D t1->s_mask & ~MAKE_64BIT_MASK(0, ofs + len); + } + z_mask =3D deposit64(t1->z_mask, ofs, len, t2->z_mask); - return fold_masks_z(ctx, op, z_mask); + return fold_masks_zs(ctx, op, z_mask, s_mask); } =20 static bool fold_divide(OptContext *ctx, TCGOp *op) --=20 2.43.0