[clang] [llvm] [HLSL][SPIRV][DXIL] Implement `dot4add_i8packed` intrinsic (PR #113623)

[Greg Roth via cfe-commits]

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+// RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -triple \
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pow2clk wrote:

202x is the default. Is there a reason this requires 2021?

https://github.com/llvm/llvm-project/pull/113623