[clang] [clang][CodeGen] Fix MSVC ABI for HVA/HFA returns with vectorcall on x86 (PR #113104)

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kin4stat wrote:

Sorry for the force-push. I know the LLVM guidelines prefer adding new commits during review instead of rewriting history. This branch was based on a main from about two years ago, though, so I rebased it onto current main and squashed the original commit together with the review fixes into a single commit. The old commit no longer matched the code under review, so keeping it separately didn't seem useful. Further updates will be pushed as new commits.


https://github.com/llvm/llvm-project/pull/113104