[libomptarget] Add a test for OMP_TARGET_OFFLOAD=disabled

[ye-luo]

closes #144786

[llvmbot]

@llvm/pr-subscribers-offload

Author: Ye Luo (ye-luo)

Changes

closes #144786

---

Full diff: https://github.com/llvm/llvm-project/pull/146385.diff

1 Files Affected:

• (added) offload/test/offloading/disable_default_device.c (+22)

diff --git a/offload/test/offloading/disable_default_device.c b/offload/test/offloading/disable_default_device.c
new file mode 100644
index 0000000000000..77ea9d4669f19
--- /dev/null
+++ b/offload/test/offloading/disable_default_device.c
@@ -0,0 +1,22 @@
+// RUN: %libomptarget-compile-generic
+// RUN:   env OMP_TARGET_OFFLOAD=disabled %libomptarget-run-generic 2>&1 |
+// %fcheck-generic
+
+#include <omp.h>
+#include <stdio.h>
+
+// Sanity checks to make sure that this works and is thread safe.
+int main() {
+  // CHECK: number of devices 0
+  printf("number of devices %d\n", omp_get_num_devices());
+  // CHECK:initial device 0
+  printf("initial device %d\n", omp_get_initial_device());
+  // CHECK:default device 0
+  printf("default device %d\n", omp_get_default_device());
+  // CHECK: PASS
+  if (omp_get_initial_device() == omp_get_default_device()) {
+    printf("PASS\n");
+    return 0;
+  }
+  return 1;
+}

[Meinersbur]

Is nobody testing this? Fails unconditionally with

# shell parser error on RUN: at line 2: env OMP_TARGET_OFFLOAD=disabled /home/meinersbur/src/llvm/work/release/runtimes/runtimes-bins/offload/test/x86_64-unknown-linux-gnu-LTO/offloading/Output/disable_default_device.c.tmp 2>&1 |

FileCheck %s is missing at the end of the line

[jhuber6]

Ah, didn't catch that. The OpenMP testing situation is a travesty and has been for several years.

[ye-luo]

Somehow clang-format added a new line and break the added test.

[ye-luo]

9f6784c