5fd2af38e4
This pull request is the first part of an ongoing effort to extends PGO instrumentation to GPU device code. This PR makes the following changes: - Adds blank registration functions to device RTL - Gives PGO globals protected visibility when targeting a supported GPU - Handles any addrspace casts for PGO calls - Implements PGO global extraction in GPU plugins (currently only dumps info) These changes can be tested by supplying `-fprofile-instrument=clang` while targeting a GPU.
The LLVM/Offload Subproject
The Offload subproject aims at providing tooling, runtimes, and APIs that allow users to execute code on accelerators or other "co-processors" that may or may not match the architecture of their "host". In the long run, all kinds of targets are in scope of this effort, including but not limited to: CPUs, GPUs, FPGAs, AI/ML accelerators, distributed resources, etc.
The project is just starting and the design is still not ironed out. More content will show up here and on our webpage soon. In the meantime people are encouraged to participate in our meetings (see below) and check our development board as well as the discussions on Discourse.
Meetings
Every second Wednesday, 7:00 - 8:00am PT, starting Jan 24, 2024. Alternates with the OpenMP in LLVM meeting. invite.ics Meeting Minutes and Agenda