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From: "gcc.gnu at vvalter dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/106816] noreturn/pure attributes are not set correctly on
 multiversioned functions
Date: Fri, 02 Sep 2022 19:48:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106816

--- Comment #4 from Simon Rainer <gcc.gnu at vvalter dot com> ---
That's weird, I still get the following with your patch applied:

main:
.LFB2:
        .cfi_startproc
        subq    $8, %rsp
        .cfi_def_cfa_offset 16
        call    _Z5_Z1fvv@PLT
        movl    $1, %eax
        addq    $8, %rsp
        .cfi_def_cfa_offset 8
        ret
        .cfi_endproc

I double checked that and reran a full bootstrap, but maybe I'm doing somet=
hing
wrong. I would also be surprised if information about volatile, readonly, a=
nd
pure are enough to detect that the function is noreturn, wouldn't that need=
 to
be a separate information?=