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Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AM5EUR03FT034.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DBAPR08MB5719 X-Spam-Status: No, score=-14.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, GIT_PATCH_0, MSGID_FROM_MTA_HEADER, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP, UNPARSEABLE_RELAY 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: Alex Coplan via Gcc-patches From: Alex Coplan Reply-To: Alex Coplan Cc: Richard Earnshaw , Ramana Radhakrishnan Errors-To: gcc-patches-bounces@gcc.gnu.org Sender: "Gcc-patches" Hi all, When investigating this PR, I was initially confused as to why we were matching a vec_duplicate on the RHS of *mve_mov (since general_operand does not match vec_duplicates). It turns out that there are two patterns in mve.md named *mve_mov and the second one matches vec_duplicates. I've renamed this pattern to *mve_vdup to avoid further confusion. The issue in the PR is that the predicate for the operand of the vec_duplicate in *mve_vdup is not strict enough: it allows (e.g.) labels when we really only want to allow registers and const_ints. Testing: * Bootstrapped and regtested on arm-linux-gnueabihf, no regressions. * Regtested an arm-eabi cross configured with --with-float=hard --with-arch=armv8.1-m.main+mve: no regressions. Also fixes a couple of existing torture test failures at -O3 for gcc.dg/torture/pr47958-1.c. OK for trunk and eventual backport to the GCC 10 branch? Thanks, Alex gcc/ChangeLog: PR target/99647 * config/arm/mve.md (*mve_mov): Rename to... (*mve_vdup): ... this. Also tighten up predicate for vec_duplicate operand. gcc/testsuite/ChangeLog: PR target/99647 * gcc.c-torture/compile/pr99647.c: New test. diff --git a/gcc/config/arm/mve.md b/gcc/config/arm/mve.md index 135186371e7..d79b3156077 100644 --- a/gcc/config/arm/mve.md +++ b/gcc/config/arm/mve.md @@ -104,10 +104,10 @@ (define_insn "*mve_mov" (set_attr "thumb2_pool_range" "*,*,*,*,1018,*,*,*,*") (set_attr "neg_pool_range" "*,*,*,*,996,*,*,*,*")]) -(define_insn "*mve_mov" +(define_insn "*mve_vdup" [(set (match_operand:MVE_types 0 "s_register_operand" "=w,w") (vec_duplicate:MVE_types - (match_operand:SI 1 "nonmemory_operand" "r,i")))] + (match_operand:SI 1 "reg_or_int_operand" "r,i")))] "TARGET_HAVE_MVE || TARGET_HAVE_MVE_FLOAT" { if (which_alternative == 0) diff --git a/gcc/testsuite/gcc.c-torture/compile/pr99647.c b/gcc/testsuite/gcc.c-torture/compile/pr99647.c new file mode 100644 index 00000000000..701155dd856 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr99647.c @@ -0,0 +1,5 @@ +/* { dg-do assemble } */ +typedef int __attribute((vector_size(16))) V; +V f(void) { + return (V){ (int)f, (int)f, (int)f, (int)f }; +}