SPIR-V portability fix for single element vectors #719
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Adjust a HIP header for avoiding single element vectors to appear in LLVM IR. Single element vectors are not supported in SPIR-V without an extension (e.g. SPV_INTEL_vector_compute) which are enabled with hard coded --spirv-ext=+all option in clang.
I'll make clang patch to disable all SPIR-V extension which will cause an assertion to be triggered in
llvm-spirv
if there are single element vectors in the input device code.Related to issue #713.
(We had this patch previously but it got lost in #521)