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([71.212.144.252]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2f2ee26fc22sm4165260a91.51.2024.12.19.20.11.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Dec 2024 20:11:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1734667871; x=1735272671; 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=pTlIt3yFdh4Ary2wfKIiByPP+3BeXY1y055wil8BQG4=; b=KIhTgOVKsSd22foZ9vs/aHRxaxE48BQcZ0Vt+bs5mvbrsu2UD0MoQfA7Ytqizkg7nc XAJWUPR4KokSXNlfvWpPl53xWjyA9gJ2yhixGFwjSHcbHTEI89tY9VmUXEUnmDJ865FM fgaWYDks5kmkWNk34dUjPOBRcDv9nivrF+oHWNsYt+WYdF0uMpdxCn2xdY3z2PsYySTc NxY6hwc+nwWjIVEY0w3asPx0QGb/G3iFQ8KMEexOTPMU8otSmq+k5QPHui4iCeHtlthe cwRl8n3pr0zaYST2CJohTse/TEsWS6UrY3F1HTGULs0Xu+Y1uJVhkU/Yz3KZ4Zl+qWDo WetQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734667871; x=1735272671; 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=pTlIt3yFdh4Ary2wfKIiByPP+3BeXY1y055wil8BQG4=; b=qdstZ0LvFZRxY4uMTKbxENqVVhwTlk1ufZTAPQO6FHxEAkRoG+xbSzOkn7qHS58Ld+ VUagd7HEEEnGSX5+m81jF4WHx8oVYQabl/53kT7PDiu9o/7GZHo3vuVngs422UliEeHx V/bCS40ueaEwxVRutIF7zto1iLjWkiD9x/3G0b1z0X7OccjQb0cFaaH/H5T9+J/e4LQx LyWsLeuhuZrX47s2jB+FVutnmxR/flrNmyyBHvc6yi1dyE2elfTwJz6gTuWdSKdoMq63 /C3CzpbSpd62JyMprEUa0C4WFVcwRG5V9XTEd76hLgO01++1+XOgoai04oUbZ1KatX1i DqPA== X-Gm-Message-State: AOJu0Yw5FGmxH/D3sf8meP3yFlJbeOK1X5Pf3Xf9Oha+le/KgBtGe+zn wH/Z4JVIOa8sJfGqTRVjua7M7ZrIvQ5qyMAhrMXda7WnAg5unr9jPsRK+3i9sXpW1zbOlBVtfUk 6 X-Gm-Gg: ASbGncv06wc+ct/w5qOxpSJHpJ/7oY/3Kism5AqbWqNWKfNNJoFDiItmUeRUJpBUwbH f5V+1KTrNNQ0ofTjUvXKAaAQlE5pcJEFMvxiEOQojyydzofo+vMJoOQZWUEO+BSgHOcOETUGsEX CuLB7sg6YhZZm/pIj98Co1Li7R2OnaiVVhz5bxT4F9cYYg+W0f2wKedYhOGk0Qi04fqZfVoD7Xr gv/7v10NvpwgbqCmB5GXejS3yBa4BcS7si3r96jsdfmfYpUWbCeVrvncjvtN2c= X-Google-Smtp-Source: AGHT+IErVWvRssLTHoUjaQpMD6UvykhWjrOCrC43l8VUNG5IfnOijDAmYT3MgMl2RR0XUJgFDYyDIg== X-Received: by 2002:a17:90b:2543:b0:2f4:432d:250d with SMTP id 98e67ed59e1d1-2f452e372edmr2051809a91.21.1734667871434; Thu, 19 Dec 2024 20:11:11 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Pierrick Bouvier Subject: [PATCH v2 09/51] tcg/optimize: Use fold_masks_zs in fold_bswap Date: Thu, 19 Dec 2024 20:10:21 -0800 Message-ID: <20241220041104.53105-10-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241220041104.53105-1-richard.henderson@linaro.org> References: <20241220041104.53105-1-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::634; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x634.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: 1734667946796116600 Content-Type: text/plain; charset="utf-8" Avoid the use of the OptContext slots. Find TempOptInfo once. Always set s_mask along the BSWAP_OS path, since the result is being explicitly sign-extended. Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- tcg/optimize.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/tcg/optimize.c b/tcg/optimize.c index c73410232b..b8e9ded821 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1495,16 +1495,15 @@ static bool fold_brcond2(OptContext *ctx, TCGOp *op) static bool fold_bswap(OptContext *ctx, TCGOp *op) { uint64_t z_mask, s_mask, sign; + TempOptInfo *t1 =3D arg_info(op->args[1]); =20 - if (arg_is_const(op->args[1])) { - uint64_t t =3D arg_info(op->args[1])->val; - - t =3D do_constant_folding(op->opc, ctx->type, t, op->args[2]); - return tcg_opt_gen_movi(ctx, op, op->args[0], t); + if (t1->is_const) { + return tcg_opt_gen_movi(ctx, op, op->args[0], + do_constant_folding(op->opc, ctx->type, + t1->val, op->args[2])); } =20 - z_mask =3D arg_info(op->args[1])->z_mask; - + z_mask =3D t1->z_mask; switch (op->opc) { case INDEX_op_bswap16_i32: case INDEX_op_bswap16_i64: @@ -1532,18 +1531,17 @@ static bool fold_bswap(OptContext *ctx, TCGOp *op) /* If the sign bit may be 1, force all the bits above to 1. */ if (z_mask & sign) { z_mask |=3D sign; - s_mask =3D sign << 1; } + /* The value and therefore s_mask is explicitly sign-extended. */ + s_mask =3D sign << 1; break; default: /* The high bits are undefined: force all bits above the sign to 1= . */ z_mask |=3D sign << 1; break; } - ctx->z_mask =3D z_mask; - ctx->s_mask =3D s_mask; =20 - return fold_masks(ctx, op); + return fold_masks_zs(ctx, op, z_mask, s_mask); } =20 static bool fold_call(OptContext *ctx, TCGOp *op) --=20 2.43.0