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[209.85.214.170]) by smtp.gmail.com with ESMTPSA id ka26-20020a056a00939a00b006d997b5d009sm3328185pfb.69.2024.01.12.08.00.25 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 12 Jan 2024 08:00:25 -0800 (PST) Received: by mail-pl1-f170.google.com with SMTP id d9443c01a7336-1d3ea5cc137so55098375ad.0 for ; Fri, 12 Jan 2024 08:00:25 -0800 (PST) X-Received: by 2002:a17:903:249:b0:1d5:71fd:d0e with SMTP id j9-20020a170903024900b001d571fd0d0emr1419702plh.114.1705075225696; Fri, 12 Jan 2024 08:00:25 -0800 (PST) MIME-Version: 1.0 References: <92969380-bc94-4f42-ad8c-4a555ef9470f@suse.com> <434c6801331f45762ad1f766ce3759abdee12803.camel@xry111.site> In-Reply-To: <434c6801331f45762ad1f766ce3759abdee12803.camel@xry111.site> From: YunQiang Su Date: Sat, 13 Jan 2024 00:00:13 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: Gas: Any pseudo instruction to disable a single RELOC? To: Xi Ruoyao Cc: Jan Beulich , binutils Content-Type: multipart/mixed; boundary="00000000000024b9c7060ec1c330" X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,KAM_DMARC_STATUS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,RCVD_IN_VALIDITY_RPBL,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: --00000000000024b9c7060ec1c330 Content-Type: text/plain; charset="UTF-8" > > For this purpose GAS already supports the nal alias for bltzal $r0, 0. > Yes. I tried it first, and the performance of it is soooo bad. The attached test case on Loongson 3A: classic-MIPS-PIC NAL-PIC BAL-PIC 1.5s 18s (eighteen) 5s --00000000000024b9c7060ec1c330 Content-Type: application/octet-stream; name="xx.c" Content-Disposition: attachment; filename="xx.c" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_lratr8gy0 I2luY2x1ZGUgPHN0ZGlvLmg+Cgp2b2xhdGlsZSBpbnQgZzEgPSAxOwp2b2xhdGlsZSBpbnQgZzIg PSAyOwp2b2xhdGlsZSBpbnQgZzMgPSAzOwp2b2xhdGlsZSBpbnQgZzQgPSA0Owp2b2xhdGlsZSBp bnQgZzUgPSA1Owp2b2xhdGlsZSBpbnQgZzYgPSA2Owp2b2xhdGlsZSBpbnQgZzcgPSA3Owp2b2xh dGlsZSBpbnQgZzggPSA4OwoKdm9sYXRpbGUgaW50IGc5ID0gOTsKdm9sYXRpbGUgaW50IGcxMCA9 IDEwOwp2b2xhdGlsZSBpbnQgZzExID0gMTE7CnZvbGF0aWxlIGludCBnMTIgPSAxMjsKdm9sYXRp bGUgaW50IGcxMyA9IDEzOwp2b2xhdGlsZSBpbnQgZzE0ID0gMTQ7CnZvbGF0aWxlIGludCBnMTUg PSAxNTsKdm9sYXRpbGUgaW50IGcxNiA9IDE2OwoKdm9sYXRpbGUgaW50IGcxNyA9IDE3Owp2b2xh dGlsZSBpbnQgZzE4ID0gMTg7CnZvbGF0aWxlIGludCBnMTkgPSAxOTsKdm9sYXRpbGUgaW50IGcy MCA9IDIwOwp2b2xhdGlsZSBpbnQgZzIxID0gMjE7CnZvbGF0aWxlIGludCBnMjIgPSAyMjsKdm9s YXRpbGUgaW50IGcyMyA9IDIzOwp2b2xhdGlsZSBpbnQgZzI0ID0gMjQ7CgpfX2F0dHJpYnV0ZV9f ICgobm9pbmxpbmUpKQp2b2xhdGlsZSBpbnQgZiAoKSB7CiAgICAgICAgcmV0dXJuIGcxICsgZzIg KyBnMyArIGc0ICsgZzUgKyBnNiArIGc3ICsgZzggKwogICAgICAgICAgICAgICAgZzkgKyBnMTAg KyBnMTEgKyBnMTIgKyBnMTMgKyBnMTQgKyBnMTUgKyBnMTYgKwogICAgICAgICAgICAgICAgZzE3 ICsgZzE4ICsgZzE5ICsgZzIwICsgZzIxICsgZzIyICsgZzIzICsgZzI0Owp9CgppbnQgbWFpbiAo KSB7CiAgICAgICAgaW50IHg7CiAgICAgICAgZm9yIChpbnQgaSA9IDA7IGk8IDFlODsgaSsrKSB7 CiAgICAgICAgICAgICAgICB4ICs9IGYgKCk7CiAgICAgICAgfQoJcHJpbnRmICgiJWRcbiIsIHgp OwogICAgICAgIHJldHVybiB4Owp9Cg== --00000000000024b9c7060ec1c330--