commit 349abecb907dc03134110143b26462adba6bad45
author global-integration-roller <global-integration-roller@fuchsia-infra.iam.gserviceaccount.com> Sat Apr 29 15:38:49 2023 +0000
committer GI Roller <global-integration-roller@fuchsia-infra.iam.gserviceaccount.com> Sat Apr 29 15:38:49 2023 +0000
tree 1b71928ee07f710499311a07d5f52d1a39202607
parent e4d24b6b583a15b92d642f7eb66425fdce9cd219

[superproject] Roll llvm-project/libc [libc] Add support for global ctors / dtors for AMDGPU

This patch makes the necessary changes to support calling global
constructors and destructors on the GPU. The patch in D149340 allows the
`lld` linker to create the symbols pointing us to these globals. These
should be executed by a single thread, which is more difficult on the
GPU because all threads are active. I chose to use an atomic counter to
sync every thread on the GPU. This is very slow if you use more than a
few thousand threads, but for testing purposes it should be sufficient.

Depends on D149340 D149363

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D149398

GitOrigin-RevId: e6907e1dff05e76f1b101226bfbf24484e4df73e
Original-Revision: ec040b7f0382eb47cda869f69d4bca02fc872b25
Roller-URL: https://ci.chromium.org/b/8782468262605328817
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I40d35e10b80e8fd7704aa46c18e56ef7b0267ec4
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/849023