[PATCH] D140695: [M68k] Define __GCC_HAVE_SYNC_COMPARE_AND_SWAP macros

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0x59616e added a comment.

Also, could you add "Fixes #58974" in the commit message so that the item will be closed automatically upon commiting ? Thtanks


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  rG LLVM Github Monorepo

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https://reviews.llvm.org/D140695