OpenCL is ~twice faster than SPIR version

Discussion created by polarnick on Oct 13, 2017
Latest reply on Nov 9, 2017 by dipak


My problem is the same as Slow SPIR


But I think that my problem is with VGPRs usage. Under SPIR they are used much more. How can I investigate to workaround this behaviour? I can provide executable with OpenCL and executable with SPIR. But I wonder, if the twice slower SPIR performance for so many years wasn't investigated? Because I don't think that pure OpenCL without SPIR can be used in commercial apps.