9e5c136d5a
This pull request is the second part of an ongoing effort to extends PGO instrumentation to GPU device code and depends on #76587. This PR makes the following changes: - Introduces `__llvm_write_custom_profile` to PGO compiler-rt library. This is an external function that can be used to write profiles with custom data to target-specific files. - Adds `__llvm_write_custom_profile` as weak symbol to libomptarget so that it can write the collected data to a profraw file. - Adds `PGODump` debug flag and only displays dump when the aforementioned flag is set
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.
For OpenMP offload users, the project is ready and fully usable. The final API design is still under development. 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