[LLVMbugs] [Bug 16017] New: llc asserts in 'ValueHandleBase::ValueIsDeleted'

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16017

            Bug ID: 16017
           Summary: llc asserts in 'ValueHandleBase::ValueIsDeleted'
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: david.majnemer at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10516
  --> http://llvm.org/bugs/attachment.cgi?id=10516&action=edit
The crashing input

$ ~/llvm/fresh-build/bin/llc --version
LLVM (http://llvm.org/):
  LLVM version 3.4svn
  DEBUG build with assertions.
  Built May 14 2013 (00:28:00).
  Default target: x86_64-unknown-linux-gnu
  Host CPU: corei7-avx

  Registered Targets:
    aarch64  - AArch64
    arm      - ARM
    cpp      - C++ backend
    hexagon  - Hexagon
    mblaze   - MBlaze
    mips     - Mips
    mips64   - Mips64 [experimental]
    mips64el - Mips64el [experimental]
    mipsel   - Mipsel
    msp430   - MSP430 [experimental]
    nvptx    - NVIDIA PTX 32-bit
    nvptx64  - NVIDIA PTX 64-bit
    ppc32    - PowerPC 32
    ppc64    - PowerPC 64
    sparc    - Sparc
    sparcv9  - Sparc V9
    systemz  - SystemZ
    thumb    - Thumb
    x86      - 32-bit X86: Pentium-Pro and above
    x86-64   - 64-bit X86: EM64T and AMD64
    xcore    - XCore

$ ~/llvm/fresh-build/bin/llc /var/tmp/a.ll                                     
                                                                               
                                   While deleting: metadata %
An asserting value handle still pointed to this value!
UNREACHABLE executed at /home/majnemer/llvm/fresh-src/lib/IR/Value.cpp:633!
0  llc             0x00000000012122da
1  llc             0x0000000001212561
2  llc             0x0000000001211fb0
3  libpthread.so.0 0x00007f0e9358bcb0
4  libc.so.6       0x00007f0e929e1425 gsignal + 53
5  libc.so.6       0x00007f0e929e4b8b abort + 379
6  llc             0x00000000011d2d58
7  llc             0x00000000011290e5
8  llc             0x000000000112766a
9  llc             0x00000000010fb78e
10 llc             0x00000000010fba07
11 llc             0x00000000010f0313
12 llc             0x00000000010eec21
13 llc             0x00000000010ef48f
14 llc             0x00000000011d65ff
15 llc             0x00000000011d662d
16 llc             0x000000000042c2c7
17 llc             0x0000000000427e4b
18 libc.so.6       0x00007f0e929cc76d __libc_start_main + 237
19 llc             0x0000000000427779
Stack dump:
0.      Program arguments: /home/majnemer/llvm/fresh-build/bin/llc
/var/tmp/a.ll 
zsh: abort (core dumped)  ~/llvm/fresh-build/bin/llc /var/tmp/a.ll

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