[Bug 94012] Tonga OpenCL clpeak vm faults

[Bug 94012] Tonga OpenCL clpeak vm faults

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https://bugs.freedesktop.org/show_bug.cgi?id=94012

            Bug ID: 94012
           Summary: Tonga OpenCL clpeak vm faults
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: adf.lists@gmail.com

Created attachment 121540
  --> https://bugs.freedesktop.org/attachment.cgi?id=121540&action=edit
vm debug

R9285 llvm,mesa,libclc yesterdays gits.

No ideea if this is a regression as I've only just noticed tonga got added to
libclc so this is first time testing OpenCL.

clpeak - https://github.com/krrishnarraj/clpeak.git

produces vmfaults. It will run to completion.

R600_DEBUG=check_vm ./clpeak 

Platform: Clover
  Device: AMD TONGA (DRM 3.1.0, LLVM 3.9.0)
    Driver version  : 11.2.0-devel (Linux x64)
    Compute units   : 28
    Clock frequency : 0 MHz

    Global memory bandwidth (GBPS)
      float   : 1.45
      float2  : 1.44
      float4  : 1.45
      float8  : 1.45
      float16 : Detected a VM fault, exiting...

Attaching output and vm debug file from 

R600_DEBUG=check_vm,cs ./clpeak &>~/clpeak-cs

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[Bug 94012] Tonga OpenCL clpeak vm faults

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https://bugs.freedesktop.org/show_bug.cgi?id=94012

--- Comment #1 from Andy Furniss <adf.lists@gmail.com> ---
Created attachment 121541
  --> https://bugs.freedesktop.org/attachment.cgi?id=121541&action=edit
compute shaders .bz2

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[Bug 94012] Tonga OpenCL clpeak vm faults

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https://bugs.freedesktop.org/show_bug.cgi?id=94012

Andy Furniss <adf.lists@gmail.com> changed:

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

--- Comment #2 from Andy Furniss <adf.lists@gmail.com> ---
fixed by llvm commit

commit d3adac51fcce66e8c79b77299fef9e5f6c4c646e
Author: Tom Stellard <thomas.stellard@amd.com>
Date:   Wed Mar 30 16:35:09 2016 +0000

    AMDGPU/SI: Enable lanemask tracking in misched

    Summary:
    This results in higher register usage, but should make it easier for
    the compiler to hide latency.

    This pass is a prerequisite for some more scheduler improvements, and I
    think the increase register usage with this patch is acceptable, because
    when combined with the scheduler improvements, the total register usage
    will decrease.

    shader-db stats:

    2382 shaders in 478 tests
    Totals:
    SGPRS: 48672 -> 49088 (0.85 %)
    VGPRS: 34148 -> 34847 (2.05 %)
    Code Size: 1285816 -> 1289128 (0.26 %) bytes
    LDS: 28 -> 28 (0.00 %) blocks
    Scratch: 492544 -> 573440 (16.42 %) bytes per wave
    Max Waves: 6856 -> 6846 (-0.15 %)
    Wait states: 0 -> 0 (0.00 %)

    Depends on D18451

    Reviewers: nhaehnle, arsenm

    Subscribers: arsenm, llvm-commits

    Differential Revision: http://reviews.llvm.org/D18452

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@264876
91177308-0d34-0410-b5e6-96231b3b80d8

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