[clang] [llvm] [DirectX] Making sure SROA is run when targeting DirectX (PR #179600)

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joaosaffran wrote:

@llvm-beanz Sorry, I forgot to link the original issue, this is indented to fix bug: https://github.com/llvm/llvm-project/issues/167936. 

https://github.com/llvm/llvm-project/pull/179600