public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
From: "redbeard0531 at gmail dot com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/113723] New: -freorder-blocks-and-partition emits bogus asm directives on aarch64 Date: Fri, 02 Feb 2024 15:33:47 +0000 [thread overview] Message-ID: <bug-113723-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113723 Bug ID: 113723 Summary: -freorder-blocks-and-partition emits bogus asm directives on aarch64 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: redbeard0531 at gmail dot com Target Milestone: --- It tries to subtract labels across the function split which the assembler rejects. At the very least it does this when generating a switch jump table, but there may be other cases. https://www.godbolt.org/z/Ynh1zzY4a Repro with -O3 -freorder-blocks-and-partition: [[gnu::cold]]void cold(); template<int i> void f(); #define GENERATE_CASE case __COUNTER__: f<__COUNTER__>(); break void test(int i) { switch(i) { case 1: cold(); break; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; GENERATE_CASE; } } test(int): cmp w0, 18 bls .L17 .L1: ret .L17: adrp x1, .L4 add x1, x1, :lo12:.L4 ldrb w1, [x1,w0,uxtw] adr x0, .Lrtx4 add x1, x0, w1, sxtb #2 br x1 .Lrtx4: .L4: .byte (.L14 - .Lrtx4) / 4 .byte (.L13 - .Lrtx4) / 4 // <<<< THIS IS THE BAD ONE .byte (.L12 - .Lrtx4) / 4 ... test(int) [clone .cold]: .L13: b cold() /tmp/cck05x4u.s: Assembler messages: /tmp/cck05x4u.s:48: Error: invalid operands (.text.unlikely and .text sections) for `-' Compiler returned: 1 I've repro'd on 11,12, and trunk.
next reply other threads:[~2024-02-02 15:33 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-02 15:33 redbeard0531 at gmail dot com [this message] 2024-02-02 15:43 ` [Bug target/113723] " redbeard0531 at gmail dot com 2024-02-04 0:49 ` [Bug rtl-optimization/113723] switch (jump) tables don't get along with -freorder-blocks-and-partition on non-x86 pinskia at gcc dot gnu.org 2024-06-13 16:39 ` andi-gcc at firstfloor dot org
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=bug-113723-4@http.gcc.gnu.org/bugzilla/ \ --to=gcc-bugzilla@gcc.gnu.org \ --cc=gcc-bugs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).