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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/94556] [10 Regression] FAIL: nptl/tst-thread-exit-clobber
Date: Sun, 12 Apr 2020 14:30:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94556

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
The code looks like:

        vmovq   %xmm2, %r15
        vmovq   %xmm3, %rbp
.LEHB0:
        call    pthread_exit
.LEHE0:
.L15:
        movl    %eax, %ebx
.L14:
        vmovq   %rbp, %xmm0
        movl    $4, %edi
        vzeroupper
        call    _Z11check_magicid

101             vmovq   %xmm3, %rbp
(gdb) next
103             call    pthread_exit
(gdb) p/x $rbp
$3 =3D 0x3f853f3c88fc5280
(gdb) next
106             movl    %eax, %ebx
(gdb) p/x $rbp
$4 =3D 0x88fc5280  <<<<< Only lower 32-bits are restored.
(gdb)=