Bug 214380

Summary:

net/freerdp: clang crashes during build on aarch64

Product:

Ports & Packages

Reporter:

Jan Beich <jbeich>

Component:

Individual Port(s)

Assignee:

Dimitry Andric <dim>

Status:

Closed FIXED

Severity:

Affects Only Me

CC:

dim, kevans, toolchain

Priority:

---

Keywords:

crash

Version:

Latest

Flags:

bugzilla: maintainer-feedback? (kevans)

Hardware:

arm64

OS:

Any

Bug Depends on:

Bug Blocks:

201763

Attachments:

Description	Flags
trio.c (preprocessed, XZ compressed)	none
trio.sh (compiler args)	none

Description Jan Beich freebsd_committer

2016-11-10 07:51:03 UTC

Created attachment 176845 [details]
trio.c (preprocessed, XZ compressed)

--- winpr/libwinpr/CMakeFiles/winpr.dir/utils/trio/trio.c.o ---
fatal error: error in backend: Cannot select: 0x4001521130: i32 = AArch64ISD::FCCMP 0x400147fab0, 0x4001598ab0, Constant:i32<0>, Constant:i32<13>, 0x400147f720
  0x400147fab0: f128,ch = CopyFromReg 0x400023f930, Register:f128 %vreg103
    0x4001b01850: f128 = Register %vreg103
  0x4001598ab0: f128,ch = CopyFromReg 0x400023f930, Register:f128 %vreg29
    0x40015b65f0: f128 = Register %vreg29
  0x40014c8130: i32 = Constant<0>
  0x400147f390: i32 = Constant<13>
  0x400147f720: f128 = AArch64ISD::FCMP 0x40014c9d10, 0x4001598ab0
    0x40014c9d10: f128,ch = CopyFromReg 0x400023f930, Register:f128 %vreg104
      0x40014d3850: f128 = Register %vreg104
    0x4001598ab0: f128,ch = CopyFromReg 0x400023f930, Register:f128 %vreg29
      0x40015b65f0: f128 = Register %vreg29
In function: TrioWriteDouble
cc: error: clang frontend command failed with exit code 70 (use -v to see invocation)
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM 3.8.0)
Target: aarch64-unknown-freebsd11.0
Thread model: posix
InstalledDir: /usr/bin

http://thunderx1.nyi.freebsd.org/data/110arm64-default/425457/logs/errors/freerdp-1.2.0_7.log

Comment 1 Jan Beich freebsd_committer

2016-11-10 07:52:19 UTC

Created attachment 176846 [details]
trio.sh (compiler args)

Comment 2 Jan Beich freebsd_committer

2016-11-10 07:58:01 UTC

Over to toolchain@ to determine whether it affects /head or just /releng/11.0. To reproduce you have to run trio.sh on aarch64: either qemu-user-static jail (via poudriere) or real hardware. For example:

  $ scp trio-de52a8.c.xz trio-de52a8.sh ref11-aarch64.freebsd.org:
  $ ssh ref11-aarch64.freebsd.org
  $ xz -d trio-de52a8.c.xz
  $ sh trio-de52a8.sh

Comment 3 commit-hook freebsd_committer

2016-11-10 19:40:40 UTC

A commit references this bug:

Author: dim
Date: Thu Nov 10 19:40:15 UTC 2016
New revision: 308487
URL: https://svnweb.freebsd.org/changeset/base/308487

Log:
  Pull in r263301 from upstream llvm trunk (by Ahmed Bougacha):

    [AArch64] Don't blindly lower f16/f128 FCCMPs.

    Instead, extend f16 (like we do when lowering a standalone SETCC),
    and let f128 be legalized to the RT calls.

    Fixes PR26803.

  This fixes a fatal "Cannot select" backend error when building the
  net/freerdp port for AArch64.

  PR:		214380
  MFC after:	3 days

Changes:
  head/contrib/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

Comment 4 commit-hook freebsd_committer

2016-11-14 18:55:26 UTC

A commit references this bug:

Author: dim
Date: Mon Nov 14 18:54:31 UTC 2016
New revision: 308647
URL: https://svnweb.freebsd.org/changeset/base/308647

Log:
  MFC r308487:

  Pull in r263301 from upstream llvm trunk (by Ahmed Bougacha):

    [AArch64] Don't blindly lower f16/f128 FCCMPs.

    Instead, extend f16 (like we do when lowering a standalone SETCC),
    and let f128 be legalized to the RT calls.

    Fixes PR26803.

  This fixes a fatal "Cannot select" backend error when building the
  net/freerdp port for AArch64.

  PR:		214380

Changes:
_U  stable/11/
  stable/11/contrib/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp