[OpenMP] Add critical region lock for NVPTX targets

[jhuber6]

Summary:
We define this on AMDGCN but not NVPTX, which leads to some failures
dependong on the target.

[llvmbot]

@llvm/pr-subscribers-offload

Author: Joseph Huber (jhuber6)

Changes

Summary:
We define this on AMDGCN but not NVPTX, which leads to some failures
dependong on the target.

---

Full diff: https://github.com/llvm/llvm-project/pull/110148.diff

1 Files Affected:

• (modified) offload/DeviceRTL/src/Synchronization.cpp (+4)

diff --git a/offload/DeviceRTL/src/Synchronization.cpp b/offload/DeviceRTL/src/Synchronization.cpp
index d6452a5d589c59..9ea8d171cc830e 100644
--- a/offload/DeviceRTL/src/Synchronization.cpp
+++ b/offload/DeviceRTL/src/Synchronization.cpp
@@ -398,6 +398,10 @@ void setLock(omp_lock_t *Lock) {
   } // wait for 0 to be the read value
 }
 
+void unsetCriticalLock(omp_lock_t *Lock) { unsetLock(Lock); }
+
+void setCriticalLock(omp_lock_t *Lock) { setLock(Lock); }
+
 #pragma omp end declare variant
 ///}