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* [AArch64] Support reserving x1-7 registers.Nick Desaulniers2018-09-071-0/+19
Summary: Reserving registers x1-7 is used to support CONFIG_ARM64_LSE_ATOMICS in Linux kernel. This change adds support for reserving registers x1 through x7. Reviewers: javed.absar, phosek, srhines, nickdesaulniers, efriedma Reviewed By: nickdesaulniers, efriedma Subscribers: niravd, jfb, manojgupta, nickdesaulniers, jyknight, efriedma, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D48580 llvm-svn: 341706
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