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KhronosGroup / SPIRV-LLVM-Translator

A tool and a library for bi-directional translation between SPIR-V and LLVM IR
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Add a new flag "--no-entry" #2585

Open lucasz93 opened 1 month ago

lucasz93 commented 1 month ago

Add a new flag "--no-entry" which disables kernel entry point generation. This is a workaround for some OpenCL drivers that are incompatible with entry points, leading them to have twice the number of kernel arguments. See https://github.com/KhronosGroup/SPIRV-LLVM-Translator/issues/1486 for more details.

Adding this option allows a single toolchain to be used when compiling kernels for all devices. Some real world instances of this problem: https://community.intel.com/t5/GPU-Compute-Software/OpenCL-CL-INVALID-KERNEL-ARGS-with-driver-gt-30-0-101-1340/td-p/1420021 https://community.intel.com/t5/GPU-Compute-Software/OpenCL-Kernel-Name-appends-quot-1-quot/m-p/1419720#M644

The workaround is to use ocloc but that adds another toolchain to dev environments and it doesn't have CLC++ support in master just yet.

This might be useful to backport all the way to version 14. I'll open those PRs if this gets approved instead of spamming everything upfront.

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