[Beignet] Assembly with Source Lines

[Tony Moore]

Hi.
I'm in the process of optimizing a relatively large kernel and it would
help me to match up which assembly instructions corresponds to which source
lines. For example, the original code indexed into a global array using the
same index multiple times and at first I assumed the compiler would
optimize it to be a single load but after changing the code to store the
value in a local variable I saw a performance boost. Having the assembly
with source I might have noticed some inefficiencies.
Thanks

On Sun, Nov 9, 2014, 9:45 PM Zhigang Gong <zhigang.gong at linux.intel.com>
wrote:

> This is doable but hasn't been done yet. It need to get LOC information
> from the LLVM/Clang
> side, and then map this LOC information to GEN IR and to the finally
> assembly code after
> the post instruction scheduling.
>
> Could you share with us what's the scenario you need to get this
> information? Thanks.
>
> On Sun, Nov 09, 2014 at 07:06:06PM +0000, Tony Moore wrote:
> > Hello-
> > Is there a method to match up a line of assembly from the
> OCL_OUTPUT_ASM=1
> > option to the OpenCL source code? If not, do you know what kind of
> changes
> > would need to be done?
> >
> > thanks!
>
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>
>
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