[clang] [llvm] [HLSL][SPIR-V] Implement vk::push_constant (PR #166793)

[Steven Perron via llvm-commits]

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+// RUN: %clang_cc1 -triple spirv-unknown-vulkan1.3-compute -x hlsl -ast-dump -o - %s | FileCheck %s
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s-perron wrote:

Could you add an extra run command to make sure the attribute is added when targeting DXIL too?

https://github.com/llvm/llvm-project/pull/166793