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Commit 2355066e authored by Yi Kong's avatar Yi Kong
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Port memory barriers intrinsics to AArch64 

Memory barrier __builtin_arm_[dmb, dsb, isb] intrinsics are required to
implement their corresponding ACLE and MSVC intrinsics.

This patch ports ARM dmb, dsb, isb intrinsic to AArch64.

Differential Revision: http://reviews.llvm.org/D4520

llvm-svn: 213247
parent 701e9616
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