[libclc] libclc: Add amdgpu wait_group_events (PR #185177)

[Matt Arsenault via cfe-commits]

https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/185177

None

>From 2b94f74c4d9c488c52e4edceb1d3ec50cfcc95c2 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Sat, 7 Mar 2026 12:23:00 +0100
Subject: [PATCH] libclc: Add amdgpu wait_group_events

---
 libclc/opencl/lib/amdgcn/SOURCES              |  1 +
 .../lib/amdgcn/async/wait_group_events.cl     | 23 +++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 libclc/opencl/lib/amdgcn/async/wait_group_events.cl

diff --git a/libclc/opencl/lib/amdgcn/SOURCES b/libclc/opencl/lib/amdgcn/SOURCES
index e52f54789bfab..c9d29fb2d1905 100644
--- a/libclc/opencl/lib/amdgcn/SOURCES
+++ b/libclc/opencl/lib/amdgcn/SOURCES
@@ -1,3 +1,4 @@
+async/wait_group_events.cl
 mem_fence/fence.cl
 subgroup/subgroup.cl
 synchronization/sub_group_barrier.cl
diff --git a/libclc/opencl/lib/amdgcn/async/wait_group_events.cl b/libclc/opencl/lib/amdgcn/async/wait_group_events.cl
new file mode 100644
index 0000000000000..fac33f73af1c4
--- /dev/null
+++ b/libclc/opencl/lib/amdgcn/async/wait_group_events.cl
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <clc/opencl/opencl-base.h>
+
+_CLC_DEF _CLC_OVERLOAD void wait_group_events(int n, __private event_t *evs) {
+  (void)n;
+  (void)evs;
+  work_group_barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE,
+                     memory_scope_work_group);
+}
+
+_CLC_DEF _CLC_OVERLOAD void wait_group_events(int n, __generic event_t *evs) {
+  (void)n;
+  (void)evs;
+  work_group_barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE,
+                     memory_scope_work_group);
+}