Evgeniy Stepanov d752f5e953 Basic codegen for MTE stack tagging. ...

Implement IR intrinsics for stack tagging. Generated code is very
unoptimized for now.

Two special intrinsics, llvm.aarch64.irg.sp and llvm.aarch64.tagp are
used to implement a tagged stack frame pointer in a virtual register.

Differential Revision: https://reviews.llvm.org/D64172

llvm-svn: 366360

2019-07-17 19:24:02 +00:00

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