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(localhost [IPv6:::1]) by gnu-cfl-2.localdomain (Postfix) with ESMTP id D4E3BC014C for ; Sat, 8 May 2021 07:18:50 -0700 (PDT) To: gcc-patches@gcc.gnu.org Subject: [PATCH] x86: Add a test for PR tree-optimization/42587 Date: Sat, 8 May 2021 07:18:50 -0700 Message-Id: <20210508141850.42042-1-hjl.tools@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Spam-Status: No, score=-3035.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, KAM_NUMSUBJECT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) 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: "H.J. Lu via Gcc-patches" From: "H.J. Lu" Reply-To: "H.J. Lu" Errors-To: gcc-patches-bounces@gcc.gnu.org Sender: "Gcc-patches" PR tree-optimization/42587 * gcc.target/i386/pr42587.c: New test. --- gcc/testsuite/gcc.target/i386/pr42587.c | 35 +++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 gcc/testsuite/gcc.target/i386/pr42587.c diff --git a/gcc/testsuite/gcc.target/i386/pr42587.c b/gcc/testsuite/gcc.target/i386/pr42587.c new file mode 100644 index 00000000000..d4b5143eb6d --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr42587.c @@ -0,0 +1,35 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-store-merging" } */ + +typedef unsigned char u8; +typedef unsigned int u32; +union __anonunion_out_195 +{ + u32 value; + u8 bytes[4]; +}; +union __anonunion_in_196 +{ + u32 value; + u8 bytes[4]; +}; +extern void acpi_ut_track_stack_ptr (void); +u32 acpi_ut_dword_byte_swap (u32 value); +u32 +acpi_ut_dword_byte_swap (u32 value) +{ + union __anonunion_out_195 out; + union __anonunion_in_196 in; + + { + acpi_ut_track_stack_ptr (); + in.value = value; + out.bytes[0] = in.bytes[3]; + out.bytes[1] = in.bytes[2]; + out.bytes[2] = in.bytes[1]; + out.bytes[3] = in.bytes[0]; + return (out.value); + } +} + +/* { dg-final { scan-tree-dump "32 bit bswap implementation found at" "store-merging" } } */