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(unknown [113.200.174.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id BF9DF670CB; Mon, 18 Dec 2023 08:43:03 -0500 (EST) From: Xi Ruoyao To: gcc-patches@gcc.gnu.org Cc: Jakub Jelinek , chenglulu , i@xen0n.name, xuchenghua@loongson.cn, c@jia.je, Xi Ruoyao Subject: [PATCH] middle-end: Call negate_rtx instead of simplify_gen_unary expanding rotate shift [PR113033] Date: Mon, 18 Dec 2023 21:42:02 +0800 Message-ID: <20231218134251.1513432-1-xry111@xry111.site> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-Spam-Status: No, score=-9.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, LIKELY_SPAM_FROM, SPF_HELO_PASS, 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: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785627422414357136 X-GMAIL-MSGID: 1785627422414357136 With simplify_gen_unary we end up with a not fully expanded RTX like (set (reg:SI 90) (and:SI (neg:SI (reg:SI 80)) (const_int 63))) Then it will cause an ICE with unrecognizable insn. gcc/ChangeLog: PR middle-end/113033 * expmed.cc (expand_shift_1): When expanding rotate shift, call negate_rtx instead of simplify_gen_unary (NEG, ...). --- Bootstrapped and regtested on x86_64-linux-gnu and loongarch64-linux-gnu. Ok for trunk? gcc/expmed.cc | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/gcc/expmed.cc b/gcc/expmed.cc index 05331dd5d82..f9e416b9549 100644 --- a/gcc/expmed.cc +++ b/gcc/expmed.cc @@ -2634,9 +2634,7 @@ expand_shift_1 (enum tree_code code, machine_mode mode, rtx shifted, (mode, GET_MODE_BITSIZE (scalar_mode) - INTVAL (op1)); else { - other_amount - = simplify_gen_unary (NEG, GET_MODE (op1), - op1, GET_MODE (op1)); + other_amount = negate_rtx (GET_MODE (op1), op1); HOST_WIDE_INT mask = GET_MODE_PRECISION (scalar_mode) - 1; other_amount = simplify_gen_binary (AND, GET_MODE (op1), other_amount,