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Author SHA1 Message Date
Evgeniy Stepanov c2bda3e422 [MTE] Handle MTE instructions in AArch64LoadStoreOptimizer. 
Summary: Generate pre- and post-indexed forms of ST*G and STGP when possible.

Reviewers: ostannard, vitalybuka

Subscribers: kristof.beyls, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67741

llvm-svn: 372412
 2019-09-20 17:36:27 +00:00
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