[Beignet] Program compilation crash on Ivy Bridge

Tue Dec 2 02:10:54 PST 2014

Thanks for your answer.

I am using the attached file version. I have retried (recompiled beignet
1.0, install and rerun the test) making sure that there is absolutely
only llvm/clang 3.5 on the system and I still get the same on IvyBridge:

> OpenCL platform name: Intel Gen OCL Driver
> OpenCL version: OpenCL 1.2 beignet 1.0.0
> OpenCL device: Intel(R) HD Graphics IvyBridge GT2
> going to compile CL prog
> Call parameter type does not match function signature!
> i128 8404990
>  float  %8 = call i32 @_Z6islessff(float %7, i128 8404990) #3
> Both operands to a binary operator are not of the same type!
>   %18 = fmul ppc_fp128 0xM0000000000FF40060000000000000000, float %17
> Invalid insertelement operands!
>   %20 = insertelement <4 x float> %19, ppc_fp128 %18, i32 1
> Invalid insertelement operands!
>   %26 = insertelement <4 x float> %25, ppc_fp128 0xM00000000000000000000000000000000, i32 3
> LLVM ERROR: Broken function found, compilation aborted!

I don't whether it can help but I have provided the full test program
(opencl + C) in attachment (testclbug.tar.gz).

I am than willing to share any build log, intermediate file, or
information about the problematic systems that could help to understand
the issue. I just don't know which one could be relevant and helpful.

Cheers,

Nicolas

On 12/02/2014 02:52 AM, Song, Ruiling wrote:
> It is really strange, I tried you kernel on my Ivybridge machine. With beignet 1.0 and LLVM/clang 3.5 It compiled successfully.
> Did you uninstall llvm/clang 3.4 before you install llvm/clang 3.5?
> Also you need to make sure you really use the attached file version.
> 
> From your attached kernel code (isless(C, 0.5f);), it only could generate below call instruction.
> %call = call i32 @_Z6islessff(float %4, float 5.000000e-01)
> But you get below call instruction, which is obviously wrong.
> float  %8 = call i32 @_Z6islessff(float %7, i128 8404990)
> 
>> -----Original Message-----
>> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf Of
>> Nicolas Bourdaud
>> Sent: Tuesday, December 02, 2014 2:17 AM
>> To: Zhigang Gong; beignet at lists.freedesktop.org
>> Subject: Re: [Beignet] Program compilation crash on Ivy Bridge
>>
>> Hi!
>>
>> Two weeks ago, I mentioned a problem of OpenCL program crashing during
>> compilation on IvyBridge while compiling fine on Haswell. I have been
>> advised to test using llvm/clang 3.5. So I have compiled beignet 1.0.0 using
>> llvm/clang 3.5 but it turns out that I still get the same problem on IvyBridge
>> (Haswell still works):
>>
>>> OpenCL platform name: Intel Gen OCL Driver OpenCL version: OpenCL 1.2
>>> beignet 1.0.0 OpenCL device: Intel(R) HD Graphics IvyBridge GT2
>>> Running OpenCL 1.2 version going to compile CL prog Call parameter
>>> type does not match function signature!
>>> i128 8404990
>>>  float  %8 = call i32 @_Z6islessff(float %7, i128 8404990) #3 Both
>>> operands to a binary operator are not of the same type!
>>>   %18 = fmul ppc_fp128 0xM0000000000FF40060000000000000000,
>> float %17
>>> Invalid insertelement operands!
>>>   %20 = insertelement <4 x float> %19, ppc_fp128 %18, i32 1 Invalid
>>> insertelement operands!
>>>   %26 = insertelement <4 x float> %25, ppc_fp128
>>> 0xM00000000000000000000000000000000, i32 3 LLVM ERROR: Broken
>> function found, compilation aborted!
>>
>>
>> I don't know what I could check. So any lead is welcome. For reference the
>> offending CPUs are:
>>  - Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
>>  - Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz I have put the program
>> provoking the crash in attachment (test.cl)
>>
>> Thanks in advance to anyone who could shed some light on these issues.
>>
>> Cheers,
>>
>> Nicolas
>>
>>
>> On 11/18/2014 10:00 AM, Nicolas Bourdaud wrote:
>>> Thanks! I will try this
>>>
>>> Nicolas
>>>
>>> On 18/11/2014 02:52, Zhigang Gong wrote:
>>>> The following error log is from LLVM internal. It's likely a llvm/clang 3.4's
>> bug.
>>>> The kernel works fine with both beignet 0.9.3 and 1.0.0 by using
>> llvm/clang 3.5.
>>>> The recommended llvm version for beignet is LLVM 3.5.
>>>>
>>>> OpenCL platform name: Intel Gen OCL Driver OpenCL version: OpenCL 1.2
>>>> beignet 0.9.3 OpenCL device: Intel(R) HD Graphics IvyBridge GT2
>>>> Running OpenCL 1.2 version going to compile CL prog Call parameter
>>>> type does not match function signature!
>>>> i128 8404990
>>>>  float  %8 = call i32 @_Z6islessff(float %7, i128 8404990) #7 Both
>>>> operands to a binary operator are not of the same type!
>>>>   %18 = fmul ppc_fp128 0xM0000000000FF40060000000000000000,
>> float %17
>>>> Invalid insertelement operands!
>>>>   %20 = insertelement <4 x float> %19, ppc_fp128 %18, i32 1 Invalid
>>>> insertelement operands!
>>>>   %26 = insertelement <4 x float> %25, ppc_fp128
>>>> 0xM00000000000000000000000000000000, i32 3 Broken module found,
>> compilation aborted!
>>>> Aborted
>>>>
>>>>> -----Original Message-----
>>>>> From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On
>>>>> Behalf Of Nicolas Bourdaud
>>>>> Sent: Monday, November 17, 2014 7:27 PM
>>>>> To: beignet at lists.freedesktop.org
>>>>> Subject: [Beignet] Program compilation crash on Ivy Bridge
>>>>>
>>>>> Hi!
>>>>>
>>>>> In beignet 0.9.3, beignet aborts in the middle on compilation with
>>>>> compiling for ivybridge microarchitecture, while it compiles and runs
>> fine on Haswell.
>>>>>
>>>>> I have provided a test program (test.cl) that shows the problem and
>>>>> the generate log on haswell (haswell.log) and ivybridge
>>>>> (ivybridge.log). I have tested on different ivybridge CPU  (HD4000,
>>>>> HD2500) and the issue is the same. I have also tested on different
>>>>> haswell CPU (only HD4600) and it always goes fine.
>>>>>
>>>>> For information beignet has been tested for:
>>>>>  - ivybridge using linux 3.14 compiled with llvm 3.4.
>>>>>  - haswell using linux 3.14 compiled with llvm 3.4.
>>>>>  - haswell using linux 3.16 compiled with llvm 3.5 In all case, the
>>>>> program compiled and runs correctly with haswell, not with ivybridge.
>>>>>
>>>>> I could give a try with beignet 1.0.0, but maybe you the problem
>>>>> would be obvious to you.
>>>>>
>>>>> Any idea about the problem?
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Nicolas Bourdaud
>>>>
>>>
>>>
> 
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