[Driver][SYCL] Enable adding of default device triple #4175
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Add the default device triple (spir64) when we encounter any incoming objects or libraries that have been previously built with the spir64 target. The use of -fno-sycl-link-spirv has been added to disable this behavior. Also add a supplemental option of -fsycl-add-spirv which will add the default device triple (spir64) if it is not already being used via -fsycl-targets.
AGindinson
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Jul 29, 2021
zahiraam
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Aug 2, 2021
Add the default device triple (spir64) when we encounter any incoming objects or libraries that have been previously built with the spir64 target. The use of -fno-sycl-link-spirv has been added to disable this behavior.
romanovvlad
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Sep 6, 2021
…4463) #4175 introduced automatic addition of the generic spir64 device target when any section of the input objects had this triple assigned to it. As a result, the actual list of toolchains started exceeding the user-provided one by 1 item. After #4239, the above became a problem. The dispatch of -Xsycl-target-* arguments started happening earlier in theflow, which broke the following use-case: ``` clang++ -fsycl -fsycl-targets=spir64_gen gen-obj.o gen-and-spir64-obj.o -Xsycl-target-backend "-device *" ``` A fix for now is to ignore the autodetected spir64 target when propagating the -Xsycl-target-backend arguments. A permanent solution would involve a re-design of -Xsycl-target-backend handling so that it took place only once in the flow, or belating the addition of the autodetected generic triple into the list of device targets. Signed-off-by: Artem Gindinson <artem.gindinson@intel.com>
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Add the default device triple (spir64) when we encounter any incoming objects
or libraries that have been previously built with the spir64 target. The use
of -fno-sycl-link-spirv has been added to disable this behavior.