[Bug 94012] Tonga OpenCL clpeak vm faults

[bugzilla-dae...@freedesktop.org]

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

Andy Furniss  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|NEW |RESOLVED

--- Comment #2 from Andy Furniss  ---
fixed by llvm commit

commit d3adac51fcce66e8c79b77299fef9e5f6c4c646e
Author: Tom Stellard 
Date:   Wed Mar 30 16:35:09 2016 +

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 at 264876
91177308-0d34-0410-b5e6-96231b3b80d8

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[Bug 94012] Tonga OpenCL clpeak vm faults

[bugzilla-dae...@freedesktop.org]

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

--- Comment #1 from Andy Furniss  ---
Created attachment 121541
  --> https://bugs.freedesktop.org/attachment.cgi?id=121541=edit
compute shaders .bz2

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[Bug 94012] Tonga OpenCL clpeak vm faults

[bugzilla-dae...@freedesktop.org]

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 at lists.freedesktop.org
  Reporter: adf.lists at gmail.com

Created attachment 121540
  --> https://bugs.freedesktop.org/attachment.cgi?id=121540=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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