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...g/pipermail/cfe-dev/2018-January/056721.html). ## LLVM commits * LLVM's policies on library layering and header isolation have been documented in the coding standards doc. [r324004](http://reviews.llvm.org/rL324004). * The sigil for machine IR physical registers is now `$` rather than `%`. [r323922](http://reviews.llvm.org/rL323922). * Support has been added to dsymutil for generating Apple accelerator tables. [r323655](http://reviews.llvm.org/rL323655). * `update_test_checks.py` and `update_llc_test_checks.py` have been refactored to share common code. [r323718](http://reviews.llvm.org/rL3...