Disable assertions when building DPCPP for use in performance benchmarking #17609
Description
Describe the bug
IIUC, currently, in Nightly we build DPCPP in Release mode but with assertions on (why is it even on by default?). Having assertions on can slow down clang and LLVM, and can skew the benchmarking results.
Solution: Turn off assertions in Nightly DPC++ build (maybe in shared lib build?) and use that compiler package for benchmarking.
To reproduce
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Environment
Additional context
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