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-rw-r--r--gcc/testsuite/gcc.dg/autopar/runtime-auto.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/autopar/runtime-auto.c b/gcc/testsuite/gcc.dg/autopar/runtime-auto.c
new file mode 100644
index 0000000..c1a3131
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/autopar/runtime-auto.c
@@ -0,0 +1,53 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-parallelize-loops -fdump-tree-parloops2-details" } */
+
+void abort (void);
+
+#define N 1000
+
+int a[N], b[N], c[N];
+
+void
+test_parallel_loop (void)
+{
+ int i;
+
+ /* This loop should be auto-parallelized when -ftree-parallelize-loops
+ (without =number) is used for runtime thread detection via OMP_NUM_THREADS. */
+ for (i = 0; i < N; i++)
+ a[i] = b[i] + c[i];
+}
+
+int
+main (void)
+{
+ int i;
+
+ for (i = 0; i < N; i++)
+ {
+ b[i] = i;
+ c[i] = i * 2;
+ }
+
+ test_parallel_loop ();
+
+ for (i = 0; i < N; i++)
+ {
+ if (a[i] != b[i] + c[i])
+ abort ();
+ }
+
+ return 0;
+}
+
+/* Check that the loop is parallelized with runtime thread detection. */
+/* { dg-final { scan-tree-dump "parallelizing" "parloops2" } } */
+
+/* Check that "#pragma omp parallel" is generated. */
+/* { dg-final { scan-tree-dump "pragma omp parallel" "parloops2" } } */
+
+/* Check that instead of generating a num_threads(x) clause, the compiler calls
+ "__builtin_omp_get_num_threads" that will set the number of threads at
+ program execution time. */
+/* { dg-final { scan-tree-dump "__builtin_omp_get_num_threads" "parloops2" } } */
+