[PATCH] D48580: [AArch64] Support reserving x1-7 registers.

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

Needs a test showing we correctly print the error message for code with calls (with fastisel, globalisel, and sdag isel, for plain calls and runtime library calls like memcpy).


https://reviews.llvm.org/D48580