Florian Mayer 0593ce5f0b [MC] Add 'G' to augmentation string for MTE instrumented functions
This was agreed on in
https://lists.llvm.org/pipermail/llvm-dev/2020-May/141345.html

The thread proposed two options
* add a character to augmentation string and handle in libuwind
* use a separate personality function.

It was determined that this is the simpler and better option.

This is part of ARM's Aarch64 ABI:
https://github.com/ARM-software/abi-aa/blob/main/aadwarf64/aadwarf64.rst#id22

The next step after this is teaching libunwind to untag when this
augmentation character is set.

Reviewed By: MaskRay, eugenis

Differential Revision: https://reviews.llvm.org/D127007
2022-06-08 12:36:32 -07:00
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++ SVE CodeGen Warnings ++

When the WARN check lines fail in the SVE codegen tests it most likely means you
have introduced a warning due to:
1. Adding an invalid call to VectorType::getNumElements() or EVT::getVectorNumElements()
   when the type is a scalable vector.
2. Relying upon an implicit cast conversion from TypeSize to uint64_t.

For generic code, please modify your code to work with ElementCount and TypeSize directly.
For target-specific code that only deals with fixed-width vectors, use the fixed-size interfaces.
Please refer to the code where those functions live for more details.