[Beignet] Program compilation crash on Ivy Bridge

[Song, Ruiling]

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
> >>
> >
> >