linjamaki added a comment. If I understand correctly, the default optimization level is `-O2` for the OpenCL and OpenCL++ language mode (according to CompilerInvocation.cpp:getOptimizationLevel()). Since higher than `-O0` may not work with the translator, should the SPIR-V tool chain override this default and set it to -O0 (unless a user passes some -O option)?
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