[DirectX][Scalarizer] Make sure TargetTransformInfoWrapperPass is setup (#216893) fixes #216888 In the process of testing the scalarization of HLSL long vectors I discoved that some intrinsics were crashing when used with llc but not when used with opt -scalarizer. This change makes sure that we have setup TargetTransformInfoWrapperPass so that we can call the DirectX versions of `isTargetIntrinsicWithScalarOpAtArg` and `isTargetIntrinsicWithOverloadTypeAtArg`. resolves https://github.com/llvm/llvm-project/issues/216191 Because we are also turning off the scalarizer if sm 6.9 Assisted by Copilot with GPT 5.6-Sol
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