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ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(1.95)[0.649]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; MISSING_MID(2.50)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; BAYES_HAM(-0.01)[49.89%] X-Spam-Score: 4.34 Authentication-Results: smtp-out2.suse.de; none X-Spam-Status: No, score=-10.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, MISSING_MID, 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: 2.1.30 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 Message-Id: <20240110143244.7CF7C385DC1C@sourceware.org> X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1787714249976339937 X-GMAIL-MSGID: 1787714249976339937 The optimization to expand uniform boolean vectors by sign-extension works only for dense masks but it failed to check that. Bootstrap and regtest running on x86_64-unknown-linux-gnu, I've checked aarch64 RTL expansion for the testcase. Will push tomorrow. Richard. PR middle-end/112740 * expr.cc (store_constructor): Check the integer vector mask has a single bit per element before using sign-extension to expand an uniform vector. * gcc.dg/pr112740.c: New testcase. --- gcc/expr.cc | 8 +++++--- gcc/testsuite/gcc.dg/pr112740.c | 19 +++++++++++++++++++ 2 files changed, 24 insertions(+), 3 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/pr112740.c diff --git a/gcc/expr.cc b/gcc/expr.cc index dc816bc20fa..0bf80832fe5 100644 --- a/gcc/expr.cc +++ b/gcc/expr.cc @@ -7841,10 +7841,12 @@ store_constructor (tree exp, rtx target, int cleared, poly_int64 size, break; } /* Use sign-extension for uniform boolean vectors with - integer modes. Effectively "vec_duplicate" for bitmasks. */ - if (!TREE_SIDE_EFFECTS (exp) + integer modes and single-bit mask entries. + Effectively "vec_duplicate" for bitmasks. */ + if (elt_size == 1 + && !TREE_SIDE_EFFECTS (exp) && VECTOR_BOOLEAN_TYPE_P (type) - && SCALAR_INT_MODE_P (mode) + && SCALAR_INT_MODE_P (TYPE_MODE (type)) && (elt = uniform_vector_p (exp)) && !VECTOR_TYPE_P (TREE_TYPE (elt))) { diff --git a/gcc/testsuite/gcc.dg/pr112740.c b/gcc/testsuite/gcc.dg/pr112740.c new file mode 100644 index 00000000000..8250cafd2ff --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr112740.c @@ -0,0 +1,19 @@ +/* { dg-do run { target { int128 } } } */ +/* { dg-options "" } */ + +typedef unsigned __int128 __attribute__((__vector_size__ (16))) V; + +V +foo (unsigned c, V v) +{ + return (V) (c <= v) == 0; +} + +int +main (void) +{ + V x = foo (0, (V) { }); + if (x[0]) + __builtin_abort (); + return 0; +}