[{"id":3679932,"web_url":"http://patchwork.ozlabs.org/comment/3679932/","msgid":"","list_archive_url":null,"date":"2026-04-21T15:03:01","subject":"Re: [PATCH] testsuite, v2: Xfails for aarch64/sme/streaming_mode_1.c\n and aarch64/sme/za_state_[12].c [PR122483]","submitter":{"id":79039,"url":"http://patchwork.ozlabs.org/api/people/79039/","name":"Alex Coplan","email":"Alex.Coplan@arm.com"},"content":"On 21/04/2026 16:46, Jakub Jelinek wrote:\n> On Tue, Apr 21, 2026 at 03:05:28PM +0100, Alex Coplan wrote:\n> > > > so w.r.t. previously-released behaviour, this actually preserves what\n> > > > we did before, at least for C code (I also expect this attribute to\n> > > > be predominantly used in C for real-world code).\n> > > \n> > > But it would be a regression vs. C++ or vs. clang/clang++.\n> > \n> > Yeah, that's fair enough; my thinking was that we could defer the C++\n> > patch to 17 and see if that ended up being a problem in practice, but if\n> > you think it is likely to be problematic we can avoid changing behaviour\n> > there.\n> \n> Note, I didn't mean arm:: can't change behavior in C++ for 17, just that\n> we shouldn't backport such changes to 16.2.\n\nYeah, understood; I just meant that we could exclude aarch64_vector_pcs\nand co from being rejected.\n\n> \n> > >From my POV it's not worth blocking the release over, so this sounds OK\n> > to me if Richard agrees (and no objections from other aarch64\n> > maintainers by EOD).\n> \n> In that case here is an updated testsuite patch which adds the xfails\n> (plus dg-bogus xfailed in 2 cases).\n\nOK if no objections in 12 hours.\n\nI would have preferred to have this fixed, but I don't want to hold up\nthe release for this accepts-invalid bug.\n\nThanks,\nAlex\n\n> \n> Tested on aarch64-linux.\n> \n> 2026-04-21 Jakub Jelinek \n> \n> \tPR target/122483\n> \t* gcc.target/aarch64/sme/streaming_mode_1.c Xfail errors for\n> \tsc_a, sc_c, sc_e, s_a, s_c, s_e and keyword_contradiction_1.\n> \t* gcc.target/aarch64/sme/za_state_1.c: Xfail errors for shared_a,\n> \tshared_c, shared_e, preserved_a, preserved_c, preserved_e and\n> \tkeyword_conflict_1.\n> \t* gcc.target/aarch64/sme/za_state_2.c: Xfail errors for shared_b,\n> \tshared_d, shared_f and shared_h. Add xfailed dg-bogus for\n> \textra diagnostics on shared_f and shared_h.\n> \n> --- gcc/testsuite/gcc.target/aarch64/sme/streaming_mode_1.c.jj\t2026-03-27 10:17:17.910269122 +0100\n> +++ gcc/testsuite/gcc.target/aarch64/sme/streaming_mode_1.c\t2026-04-21 13:03:24.518242099 +0200\n> @@ -1,19 +1,19 @@\n> // { dg-options \"\" }\n> \n> void sc_a () [[arm::streaming_compatible]];\n> -void sc_a (); // { dg-error \"conflicting types\" }\n> +void sc_a (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void sc_b ();\n> void sc_b () [[arm::streaming_compatible]]; // { dg-error \"conflicting types\" }\n> \n> void sc_c () [[arm::streaming_compatible]];\n> -void sc_c () {} // { dg-error \"conflicting types\" }\n> +void sc_c () {} // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void sc_d ();\n> void sc_d () [[arm::streaming_compatible]] {} // { dg-error \"conflicting types\" }\n> \n> void sc_e () [[arm::streaming_compatible]] {}\n> -void sc_e (); // { dg-error \"conflicting types\" }\n> +void sc_e (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void sc_f () {}\n> void sc_f () [[arm::streaming_compatible]]; // { dg-error \"conflicting types\" }\n> @@ -27,19 +27,19 @@ extern void (*sc_h) (); // { dg-error \"c\n> //----------------------------------------------------------------------------\n> \n> void s_a () [[arm::streaming]];\n> -void s_a (); // { dg-error \"conflicting types\" }\n> +void s_a (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void s_b ();\n> void s_b () [[arm::streaming]]; // { dg-error \"conflicting types\" }\n> \n> void s_c () [[arm::streaming]];\n> -void s_c () {} // { dg-error \"conflicting types\" }\n> +void s_c () {} // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void s_d ();\n> void s_d () [[arm::streaming]] {} // { dg-error \"conflicting types\" }\n> \n> void s_e () [[arm::streaming]] {}\n> -void s_e (); // { dg-error \"conflicting types\" }\n> +void s_e (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void s_f () {}\n> void s_f () [[arm::streaming]]; // { dg-error \"conflicting types\" }\n> @@ -118,7 +118,7 @@ void keyword_ok_5 () [[arm::streaming_co\n> //----------------------------------------------------------------------------\n> \n> void keyword_contradiction_1 () __arm_streaming;\n> -void keyword_contradiction_1 (); // { dg-error \"conflicting types\" }\n> +void keyword_contradiction_1 (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void keyword_contradiction_2 ();\n> void keyword_contradiction_2 () __arm_streaming; // { dg-error \"conflicting types\" }\n> --- gcc/testsuite/gcc.target/aarch64/sme/za_state_1.c.jj\t2026-03-27 10:17:17.911269105 +0100\n> +++ gcc/testsuite/gcc.target/aarch64/sme/za_state_1.c\t2026-04-21 13:05:01.711603896 +0200\n> @@ -1,19 +1,19 @@\n> // { dg-options \"\" }\n> \n> void shared_a () [[arm::inout(\"za\")]];\n> -void shared_a (); // { dg-error \"conflicting types\" }\n> +void shared_a (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void shared_b ();\n> void shared_b () [[arm::inout(\"za\")]]; // { dg-error \"conflicting types\" }\n> \n> void shared_c () [[arm::inout(\"za\")]];\n> -void shared_c () {} // { dg-error \"conflicting types\" }\n> +void shared_c () {} // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void shared_d ();\n> void shared_d () [[arm::inout(\"za\")]] {} // { dg-error \"conflicting types\" }\n> \n> void shared_e () [[arm::inout(\"za\")]] {}\n> -void shared_e (); // { dg-error \"conflicting types\" }\n> +void shared_e (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void shared_f () {}\n> void shared_f () [[arm::inout(\"za\")]]; // { dg-error \"conflicting types\" }\n> @@ -27,19 +27,19 @@ extern void (*shared_h) (); // { dg-erro\n> //----------------------------------------------------------------------------\n> \n> void preserved_a () [[arm::preserves(\"za\")]];\n> -void preserved_a (); // { dg-error \"conflicting types\" }\n> +void preserved_a (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void preserved_b ();\n> void preserved_b () [[arm::preserves(\"za\")]]; // { dg-error \"conflicting types\" }\n> \n> void preserved_c () [[arm::preserves(\"za\")]];\n> -void preserved_c () {} // { dg-error \"conflicting types\" }\n> +void preserved_c () {} // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void preserved_d ();\n> void preserved_d () [[arm::preserves(\"za\")]] {} // { dg-error \"conflicting types\" }\n> \n> void preserved_e () [[arm::preserves(\"za\")]] {}\n> -void preserved_e (); // { dg-error \"conflicting types\" }\n> +void preserved_e (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void preserved_f () {}\n> void preserved_f () [[arm::preserves(\"za\")]]; // { dg-error \"conflicting types\" }\n> @@ -139,7 +139,7 @@ __arm_new(\"za\") void keyword_ok_6 () {}\n> //----------------------------------------------------------------------------\n> \n> void keyword_conflict_1 () __arm_inout(\"za\");\n> -void keyword_conflict_1 (); // { dg-error \"conflicting types\" }\n> +void keyword_conflict_1 (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> void keyword_conflict_2 ();\n> void keyword_conflict_2 () __arm_inout(\"za\"); // { dg-error \"conflicting types\" }\n> --- gcc/testsuite/gcc.target/aarch64/sme/za_state_2.c.jj\t2026-03-27 10:17:17.911269105 +0100\n> +++ gcc/testsuite/gcc.target/aarch64/sme/za_state_2.c\t2026-04-21 14:39:45.357398244 +0000\n> @@ -24,25 +24,27 @@ void new_za_f () {}\n> void shared_a () [[arm::inout(\"za\")]]; // { dg-error \"conflicting types\" }\n> \n> void shared_b () [[arm::inout(\"za\")]];\n> -[[arm::new(\"za\")]] void shared_b (); // { dg-error \"conflicting types\" }\n> +[[arm::new(\"za\")]] void shared_b (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> [[arm::new(\"za\")]] void shared_c ();\n> void shared_c () [[arm::in(\"za\")]] {} // { dg-error \"conflicting types\" }\n> \n> void shared_d () [[arm::in(\"za\")]];\n> -[[arm::new(\"za\")]] void shared_d () {} // { dg-error \"conflicting types\" }\n> +[[arm::new(\"za\")]] void shared_d () {} // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> \n> [[arm::new(\"za\")]] void shared_e () {}\n> void shared_e () [[arm::out(\"za\")]]; // { dg-error \"conflicting types\" }\n> \n> void shared_f () [[arm::out(\"za\")]] {}\n> -[[arm::new(\"za\")]] void shared_f (); // { dg-error \"conflicting types\" }\n> +[[arm::new(\"za\")]] void shared_f (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> +// { dg-bogus \"cannot apply attribute 'new' to 'shared_f' after the function has been defined\" \"PR122483\" { xfail *-*-* } .-1 }\n> \n> [[arm::new(\"za\")]] void shared_g () {}\n> void shared_g () [[arm::preserves(\"za\")]]; // { dg-error \"conflicting types\" }\n> \n> void shared_h () [[arm::preserves(\"za\")]] {}\n> -[[arm::new(\"za\")]] void shared_h (); // { dg-error \"conflicting types\" }\n> +[[arm::new(\"za\")]] void shared_h (); // { dg-error \"conflicting types\" \"PR122483\" { xfail *-*-* } }\n> +// { dg-bogus \"cannot apply attribute 'new' to 'shared_h' after the function has been defined\" \"PR122483\" { xfail *-*-* } .-1 }\n> \n> //----------------------------------------------------------------------------\n> \n> \n> \n> \tJakub\n>","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=arm.com header.i=@arm.com header.a=rsa-sha256\n header.s=selector1 header.b=C2TmyPP3;\n\tdkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com\n header.a=rsa-sha256 header.s=selector1 header.b=C2TmyPP3;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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