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(unknown [IPv6:240e:358:115a:2100:dc73:854d:832e:6]) (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 812BC675B9; Tue, 5 Mar 2024 06:51:40 -0500 (EST) From: Xi Ruoyao To: gcc-patches@gcc.gnu.org Cc: chenglulu , i@xen0n.name, xuchenghua@loongson.cn, mengqinggang@loongson.cn, Xi Ruoyao Subject: [PATCH v2] LoongArch: Allow s9 as a register alias Date: Tue, 5 Mar 2024 19:50:53 +0800 Message-ID: <20240305115125.368489-1-xry111@xry111.site> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 X-Spam-Status: No, score=-9.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, 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+incoming=patchwork.ozlabs.org@gcc.gnu.org The psABI allows using s9 as an alias of r22. gcc/ChangeLog: * config/loongarch/loongarch.h (ADDITIONAL_REGISTER_NAMES): Add s9 as an alias of r22. --- v1 -> v2: Add a test case. Ok for trunk? gcc/config/loongarch/loongarch.h | 1 + gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c | 3 +++ 2 files changed, 4 insertions(+) create mode 100644 gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h index 8b453ab3140..bf2351f0968 100644 --- a/gcc/config/loongarch/loongarch.h +++ b/gcc/config/loongarch/loongarch.h @@ -931,6 +931,7 @@ typedef struct { { "t8", 20 + GP_REG_FIRST }, \ { "x", 21 + GP_REG_FIRST }, \ { "fp", 22 + GP_REG_FIRST }, \ + { "s9", 22 + GP_REG_FIRST }, \ { "s0", 23 + GP_REG_FIRST }, \ { "s1", 24 + GP_REG_FIRST }, \ { "s2", 25 + GP_REG_FIRST }, \ diff --git a/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c b/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c new file mode 100644 index 00000000000..d2e3b80f83c --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/regname-fp-s9.c @@ -0,0 +1,3 @@ +/* { dg-do compile } */ +register long s9 asm("s9"); /* { dg-note "conflicts with 's9'" } */ +register long fp asm("fp"); /* { dg-warning "register of 'fp' used for multiple global register variables" } */