[Bug 65085] New: [radeonsi LLVM] Segfault during OpenCL kernel compilation

[Bug 65085] New: [radeonsi LLVM] Segfault during OpenCL kernel compilation

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=65085

          Priority: medium
            Bug ID: 65085
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [radeonsi LLVM] Segfault during OpenCL kernel
                    compilation
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: niels_ole@salscheider-online.de
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Created attachment 79901
  --> https://bugs.freedesktop.org/attachment.cgi?id=79901&action=edit
Kernel that causes the segfault

I get a segmentation fault in LLVM with Tom Stellard's recent radeonsi compute
patches
(http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130520/175743.html)
with the attached kernel.

I can work around the issue when executing the if-block in the kernel
unconditionally or with the attached patch to LLVM.
Desc.OpInfo[0].RegClass equals -1 when the segmentation fault occurs.

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[Bug 65085] [radeonsi LLVM] Segfault during OpenCL kernel compilation

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https://bugs.freedesktop.org/show_bug.cgi?id=65085

--- Comment #1 from Niels Ole Salscheider <niels_ole@salscheider-online.de> ---
Created attachment 79903
  --> https://bugs.freedesktop.org/attachment.cgi?id=79903&action=edit
Patch to work around the issue

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[Bug 65085] [radeonsi LLVM] Segfault during OpenCL kernel compilation

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https://bugs.freedesktop.org/show_bug.cgi?id=65085

--- Comment #2 from Niels Ole Salscheider <niels_ole@salscheider-online.de> ---
Created attachment 79904
  --> https://bugs.freedesktop.org/attachment.cgi?id=79904&action=edit
Full backtrace

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[Bug 65085] [radeonsi LLVM] Segfault during OpenCL kernel compilation

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https://bugs.freedesktop.org/show_bug.cgi?id=65085

Tom Stellard <tstellar@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Tom Stellard <tstellar@gmail.com> ---
This is working for me with the latest LLVM code.  Please re-open if it is not
working for you.

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