[Beignet] [PATCH 4/5] Backend: Optimization internal math, use mad

[Yang, Rong R]

Can you compare the LLVM IR/GEN IR/ASM between the IVB and HSW, use same version llvm, maybe could quick find the root cause.

> -----Original Message-----
> From: Lupescu, Grigore
> Sent: Friday, June 24, 2016 1:16
> To: Yang, Rong R <rong.r.yang at intel.com>; Song, Ruiling
> <ruiling.song at intel.com>; beignet at lists.freedesktop.org
> Subject: RE: [Beignet] [PATCH 4/5] Backend: Optimization internal math, use
> mad
> 
> I confirm some tests are failing for IVB architecture. I am looking into this
> issue.
> 
> I ran the conformance on IVB i7-3770K (patchset 1,2,3,4 - without the patch 5
> clc) which gave: FAILED 4 of 98 tests i.e. failed on log1p, atanh, cosh, sinh.
> Changes to those functions are done in patch 4. Applying only first 3 patches
> results in all tests passing for IVB.
> 
> I did not experience any of these failures on HSW or BDW architecture.
> 
> -----Original Message-----
> From: Yang, Rong R
> Sent: Thursday, June 23, 2016 9:13 AM
> To: Song, Ruiling <ruiling.song at intel.com>; Lupescu, Grigore
> <grigore.lupescu at intel.com>; beignet at lists.freedesktop.org
> Subject: RE: [Beignet] [PATCH 4/5] Backend: Optimization internal math, use
> mad
> 
> This patchset will cause some math utests fail in IVB, such as
> builtin_acos_asin, builtin_lgamma_float and so on.
> 
> > -----Original Message-----
> > From: Beignet [mailto:beignet-bounces at lists.freedesktop.org] On Behalf
> > Of Song, Ruiling
> > Sent: Monday, June 6, 2016 16:39
> > To: Lupescu, Grigore <grigore.lupescu at intel.com>;
> > beignet at lists.freedesktop.org
> > Subject: Re: [Beignet] [PATCH 4/5] Backend: Optimization internal
> > math, use mad
> >
> > The first four patches look good. But personally I don't think the 5th
> > patch is proper for merge, although I am not good at copyright topics.
> >
> > Thanks!
> > Ruiling
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