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(175.177.45.179 with ) by smtp5010.mail.kks.ynwp.yahoo.co.jp with SMTP; 16 Aug 2022 12:42:14 -0000 X-YMail-JAS: pYJPSCIVM1l_LcVALUPbShMfoGEa1fj3f7BuZh7iSMHUB6ZdgkM9HT_nP6v3lcCoK504ivqIpBQfF.HoYcN4lCiAsDwtkSe5tXqzOFVvznN1xXsbfd87gozJ0Bh3zbGnufMdVbp97w-- X-Apparently-From: X-YMail-OSG: ZAXlwloVM1mJuZHX124xZ1LDoLv3DjrrqkWb01CxOPwLSft oAD_JGj4ijQmoAYx9KkdSXKka3oMlaUZlNczUqYgdT2eIsNg0Z9rw.dkN914 1tTtmSEOgzlyn2SzCNylvvSybiWCCnjbc.o5RxGwn..zRvDfisOR0oXkqyX3 yRb2Fv3CAIw8YUMwuC3cpC2xvpTyBqLXFm7mOLkC6ETVm4VlFF417OXI3HDh kC1EzspyhPyNJbYA7bvVNavFRrAA_2JCrKvk.rMI2pgrN7jF4GyRuEq51z7V uOBINF3gIjdD_H3CX5vYii0BQH2iT6Hsld9UPjImzf04uiuOoYTmDMG6p2rt 8zZJdiFiEa.t1tSn3FZR4tzD1JDXbs_MEuk8KetLUHm3Y6QzG2mJjhQOb5sJ HIoqCO05Bo2i6iM119FlsfwadvJJ5VeZTrVCZzkrsNgNFsBG2pgZCV4kU9ON W0jqhF2WL.ea16cMR_JV_Sgw75mIjT5Qyp4r2i0nHZBm8rYn9TdfgAviAfGy ozf.ocmCKKBw2ZNfkDe4dbZ.7NSttscZvsvbiC8tgS_zErQ3bwuf1jVy3ZDj crdG2W.0W72eGHttDZhH6I954.qV5Z_LX2cv0KKSpoJ0R0K0Eh9Wl4IU5o7q 684Vu5le6xL1Y1SKZreNILSPCwz72h5SmT2lFfWwYo8FrDhe0uOtNGW1gJGY lHwo9t.kpnNpzateZ2Msqg.OT5Lu4CYC8R.pR6Xus0uj9ec0L22JOtrqg_mz X1aJUoAFQXrIizRUGz33MoMl_ck7GdEvw4Y080bl4fZbbkgGnoN2TzOqaq9X POWwhDpiFfex98yMoIfWJ4uDoNvVIvsNTDW1A68y_PKX.QuvZH2CMI6pQr2N bE74D.CSKggrhON7zkmhU_X4GBmKo3tpUkynQmOKQC4qIf4VjxxZr3RZ2mrL VGiGdVwN9jQ9zY3nC Message-ID: Date: Tue, 16 Aug 2022 21:40:00 +0900 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.1.2 To: GCC Patches Subject: [PATCH] xtensa: Prevent emitting integer additions of constant zero X-Spam-Status: No, score=-12.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Takayuki 'January June' Suwa via Gcc-patches From: Takayuki 'January June' Suwa Reply-To: Takayuki 'January June' Suwa Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1741321703244232167?= X-GMAIL-MSGID: =?utf-8?q?1741321703244232167?= In a few cases, obviously omitable add instructions can be emitted via invoking gen_addsi3. gcc/ChangeLog: * config/xtensa/xtensa.md (addsi3_internal): Rename from "addsi3". (addsi3): New define_expand in order to reject integer additions of constant zero. --- gcc/config/xtensa/xtensa.md | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md index 9eeb73915..c132c1626 100644 --- a/gcc/config/xtensa/xtensa.md +++ b/gcc/config/xtensa/xtensa.md @@ -156,7 +156,19 @@ ;; Addition. -(define_insn "addsi3" +(define_expand "addsi3" + [(set (match_operand:SI 0 "register_operand") + (plus:SI (match_operand:SI 1 "register_operand") + (match_operand:SI 2 "add_operand")))] + "" +{ + if (! CONST_INT_P (operands[2]) || INTVAL (operands[2]) != 0) + emit_insn (gen_addsi3_internal (operands[0], + operands[1], operands[2])); + DONE; +}) + +(define_insn "addsi3_internal" [(set (match_operand:SI 0 "register_operand" "=D,D,a,a,a") (plus:SI (match_operand:SI 1 "register_operand" "%d,d,r,r,r") (match_operand:SI 2 "add_operand" "d,O,r,J,N")))]