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From: "jeevitha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/115242] New: libgcc unwinder does not handle vector
 registers, even if the target machine supports them.
Date: Mon, 27 May 2024 07:13:58 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: libgcc
X-Bugzilla-Version: 15.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: jeevitha at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115242

            Bug ID: 115242
           Summary: libgcc unwinder does not handle vector registers, even
                    if the target machine supports them.
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcc
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jeevitha at gcc dot gnu.org
                CC: bergner at gcc dot gnu.org
  Target Milestone: ---
            Target: powerpc

The powerpc64le-*-linux-gnu target has a baseline of POWER8, so vector supp=
ort
is always compiled into libgcc_s.so.1.

On powerpc64--linux-gnu and powerpc--linux-gnu, vector support is only pres=
ent
if GCC is built with a minimum baseline that includes vector support.

In glibc, the test case nptl/tst-thread-exit-clobber fails in BE because of=
 the
above reason. The reason for the failure is explained in detail in the glibc
Bugzilla: https://sourceware.org/bugzilla/show_bug.cgi?id=3D26566.=