Use plain -fopenacc to enable OpenACC kernels processing

	gcc/
	* tree-parloops.c (create_parallel_loop, gen_parallel_loop)
	(parallelize_loops): In OpenACC kernels mode, set n_threads to
	zero.
	(pass_parallelize_loops::gate): In OpenACC kernels mode, gate on
	flag_openacc.
	* tree-ssa-loop.c (gate_oacc_kernels): Likewise.
	gcc/testsuite/
	* c-c++-common/goacc/kernels-counter-vars-function-scope.c: Adjust
	to -ftree-parallelize-loops/-fopenacc changes.
	* c-c++-common/goacc/kernels-double-reduction-n.c: Likewise.
	* c-c++-common/goacc/kernels-double-reduction.c: Likewise.
	* c-c++-common/goacc/kernels-loop-2.c: Likewise.
	* c-c++-common/goacc/kernels-loop-3.c: Likewise.
	* c-c++-common/goacc/kernels-loop-g.c: Likewise.
	* c-c++-common/goacc/kernels-loop-mod-not-zero.c: Likewise.
	* c-c++-common/goacc/kernels-loop-n.c: Likewise.
	* c-c++-common/goacc/kernels-loop-nest.c: Likewise.
	* c-c++-common/goacc/kernels-loop.c: Likewise.
	* c-c++-common/goacc/kernels-one-counter-var.c: Likewise.
	* c-c++-common/goacc/kernels-reduction.c: Likewise.
	* gfortran.dg/goacc/kernels-loop-inner.f95: Likewise.
	* gfortran.dg/goacc/kernels-loops-adjacent.f95: Likewise.
	libgomp/
	* oacc-parallel.c (GOACC_parallel_keyed): Initialize dims.
	* plugin/plugin-nvptx.c (nvptx_exec): Provide default values for
	dims.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-2.c: Adjust to
	-ftree-parallelize-loops/-fopenacc changes.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-3.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-and-seq-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-and-seq-3.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-and-seq-4.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-and-seq-5.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-and-seq-6.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-and-seq.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-collapse.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-g.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-mod-not-zero.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-n.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop-nest.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-loop.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-reduction.c:
	Likewise.

From-SVN: r233634

18 files changed, 63 insertions, 40 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ce8d366..0b2149d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2016-02-23  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* tree-parloops.c (create_parallel_loop, gen_parallel_loop)
+	(parallelize_loops): In OpenACC kernels mode, set n_threads to
+	zero.
+	(pass_parallelize_loops::gate): In OpenACC kernels mode, gate on
+	flag_openacc.
+	* tree-ssa-loop.c (gate_oacc_kernels): Likewise.
+
 2016-02-23  Richard Biener  <rguenther@suse.de>
 
 	* mem-stats.h (struct mem_usage): Use PRIu64 for printing size_t.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 60372ce..17cf40c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,21 @@
+2016-02-23  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* c-c++-common/goacc/kernels-counter-vars-function-scope.c: Adjust
+	to -ftree-parallelize-loops/-fopenacc changes.
+	* c-c++-common/goacc/kernels-double-reduction-n.c: Likewise.
+	* c-c++-common/goacc/kernels-double-reduction.c: Likewise.
+	* c-c++-common/goacc/kernels-loop-2.c: Likewise.
+	* c-c++-common/goacc/kernels-loop-3.c: Likewise.
+	* c-c++-common/goacc/kernels-loop-g.c: Likewise.
+	* c-c++-common/goacc/kernels-loop-mod-not-zero.c: Likewise.
+	* c-c++-common/goacc/kernels-loop-n.c: Likewise.
+	* c-c++-common/goacc/kernels-loop-nest.c: Likewise.
+	* c-c++-common/goacc/kernels-loop.c: Likewise.
+	* c-c++-common/goacc/kernels-one-counter-var.c: Likewise.
+	* c-c++-common/goacc/kernels-reduction.c: Likewise.
+	* gfortran.dg/goacc/kernels-loop-inner.f95: Likewise.
+	* gfortran.dg/goacc/kernels-loops-adjacent.f95: Likewise.
+
 2016-02-23  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* gcc.target/i386/chkp-hidden-def.c: Require alias support.
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-counter-vars-function-scope.c b/gcc/testsuite/c-c++-common/goacc/kernels-counter-vars-function-scope.c
index e8b5357..17f240e 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-counter-vars-function-scope.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-counter-vars-function-scope.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -51,4 +50,4 @@ main (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction-n.c b/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction-n.c
index c39d674..750f576 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction-n.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction-n.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -34,4 +33,4 @@ foo (unsigned int n)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*foo.*._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction.c b/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction.c
index 3501d0d..df60d6a 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-double-reduction.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -34,4 +33,4 @@ foo (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*foo.*._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop-2.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop-2.c
index f97584d..913d91f 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop-2.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop-2.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -67,4 +66,4 @@ main (void)
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.1" 1 "optimized" } } */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.2" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 3 "parloops1" } } */
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 3 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop-3.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop-3.c
index 530d62a..1822d2a 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop-3.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop-3.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -45,5 +44,4 @@ main (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
-
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop-g.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop-g.c
index 4f1c2c5..e946319 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop-g.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop-g.c
@@ -1,6 +1,5 @@
 /* { dg-additional-options "-O2" } */
 /* { dg-additional-options "-g" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -13,5 +12,4 @@
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
-
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop-mod-not-zero.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop-mod-not-zero.c
index 151db51..9b63b45 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop-mod-not-zero.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop-mod-not-zero.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -49,4 +48,4 @@ main (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop-n.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop-n.c
index bee5f5a..279f797 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop-n.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop-n.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -52,5 +51,4 @@ foo (COUNTERTYPE n)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*foo.*._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
-
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop-nest.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop-nest.c
index ea0e342..db1071f 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop-nest.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop-nest.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -36,4 +35,4 @@ main (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-loop.c b/gcc/testsuite/c-c++-common/goacc/kernels-loop.c
index ab5dfb9..abf7a3c 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-loop.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-loop.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -52,5 +51,4 @@ main (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
-
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-one-counter-var.c b/gcc/testsuite/c-c++-common/goacc/kernels-one-counter-var.c
index b16a8cd..95f4817 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-one-counter-var.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-one-counter-var.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -50,5 +49,4 @@ main (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*main._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
-
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-reduction.c b/gcc/testsuite/c-c++-common/goacc/kernels-reduction.c
index 61c5df3..6f5a418 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-reduction.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-reduction.c
@@ -1,5 +1,4 @@
 /* { dg-additional-options "-O2" } */
-/* { dg-additional-options "-ftree-parallelize-loops=32" } */
 /* { dg-additional-options "-fdump-tree-parloops1-all" } */
 /* { dg-additional-options "-fdump-tree-optimized" } */
 
@@ -32,5 +31,4 @@ foo (void)
 /* Check that the loop has been split off into a function.  */
 /* { dg-final { scan-tree-dump-times "(?n);; Function .*foo.*._omp_fn.0" 1 "optimized" } } */
 
-/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(32," 1 "parloops1" } } */
-
+/* { dg-final { scan-tree-dump-times "(?n)oacc function \\(0," 1 "parloops1" } } */
diff --git a/gcc/testsuite/gfortran.dg/goacc/kernels-loop-inner.f95 b/gcc/testsuite/gfortran.dg/goacc/kernels-loop-inner.f95
index 4db3a50..3334741 100644
--- a/gcc/testsuite/gfortran.dg/goacc/kernels-loop-inner.f95
+++ b/gcc/testsuite/gfortran.dg/goacc/kernels-loop-inner.f95
@@ -1,5 +1,4 @@
 ! { dg-additional-options "-O2" }
-! { dg-additional-options "-ftree-parallelize-loops=32" }
 
 program main
    implicit none
diff --git a/gcc/testsuite/gfortran.dg/goacc/kernels-loops-adjacent.f95 b/gcc/testsuite/gfortran.dg/goacc/kernels-loops-adjacent.f95
index fef3d10..fb92da8 100644
--- a/gcc/testsuite/gfortran.dg/goacc/kernels-loops-adjacent.f95
+++ b/gcc/testsuite/gfortran.dg/goacc/kernels-loops-adjacent.f95
@@ -1,5 +1,4 @@
 ! { dg-additional-options "-O2" }
-! { dg-additional-options "-ftree-parallelize-loops=10" }
 
 program main
    implicit none
diff --git a/gcc/tree-parloops.c b/gcc/tree-parloops.c
index 139e38c..e498e5b 100644
--- a/gcc/tree-parloops.c
+++ b/gcc/tree-parloops.c
@@ -2016,7 +2016,8 @@ transform_to_exit_first_loop (struct loop *loop,
 /* Create the parallel constructs for LOOP as described in gen_parallel_loop.
    LOOP_FN and DATA are the arguments of GIMPLE_OMP_PARALLEL.
    NEW_DATA is the variable that should be initialized from the argument
-   of LOOP_FN.  N_THREADS is the requested number of threads.  */
+   of LOOP_FN.  N_THREADS is the requested number of threads, which can be 0 if
+   that number is to be determined later.  */
 
 static void
 create_parallel_loop (struct loop *loop, tree loop_fn, tree data,
@@ -2049,6 +2050,7 @@ create_parallel_loop (struct loop *loop, tree loop_fn, tree data,
       basic_block paral_bb = single_pred (bb);
       gsi = gsi_last_bb (paral_bb);
 
+      gcc_checking_assert (n_threads != 0);
       t = build_omp_clause (loc, OMP_CLAUSE_NUM_THREADS);
       OMP_CLAUSE_NUM_THREADS_EXPR (t)
 	= build_int_cst (integer_type_node, n_threads);
@@ -2221,7 +2223,8 @@ create_parallel_loop (struct loop *loop, tree loop_fn, tree data,
 }
 
 /* Generates code to execute the iterations of LOOP in N_THREADS
-   threads in parallel.
+   threads in parallel, which can be 0 if that number is to be determined
+   later.
 
    NITER describes number of iterations of LOOP.
    REDUCTION_LIST describes the reductions existent in the LOOP.  */
@@ -2318,6 +2321,7 @@ gen_parallel_loop (struct loop *loop,
       else
 	m_p_thread=MIN_PER_THREAD;
 
+      gcc_checking_assert (n_threads != 0);
       many_iterations_cond =
 	fold_build2 (GE_EXPR, boolean_type_node,
 		     nit, build_int_cst (type, m_p_thread * n_threads));
@@ -3177,7 +3181,7 @@ oacc_entry_exit_ok (struct loop *loop,
 static bool
 parallelize_loops (bool oacc_kernels_p)
 {
-  unsigned n_threads = flag_tree_parallelize_loops;
+  unsigned n_threads;
   bool changed = false;
   struct loop *loop;
   struct loop *skip_loop = NULL;
@@ -3199,6 +3203,13 @@ parallelize_loops (bool oacc_kernels_p)
   if (cfun->has_nonlocal_label)
     return false;
 
+  /* For OpenACC kernels, n_threads will be determined later; otherwise, it's
+     the argument to -ftree-parallelize-loops.  */
+  if (oacc_kernels_p)
+    n_threads = 0;
+  else
+    n_threads = flag_tree_parallelize_loops;
+
   gcc_obstack_init (&parloop_obstack);
   reduction_info_table_type reduction_list (10);
 
@@ -3361,7 +3372,13 @@ public:
   {}
 
   /* opt_pass methods: */
-  virtual bool gate (function *) { return flag_tree_parallelize_loops > 1; }
+  virtual bool gate (function *)
+  {
+    if (oacc_kernels_p)
+      return flag_openacc;
+    else
+      return flag_tree_parallelize_loops > 1;
+  }
   virtual unsigned int execute (function *);
   opt_pass * clone () { return new pass_parallelize_loops (m_ctxt); }
   void set_pass_param (unsigned int n, bool param)
diff --git a/gcc/tree-ssa-loop.c b/gcc/tree-ssa-loop.c
index bdbade5..4c39fbc 100644
--- a/gcc/tree-ssa-loop.c
+++ b/gcc/tree-ssa-loop.c
@@ -148,7 +148,7 @@ make_pass_tree_loop (gcc::context *ctxt)
 static bool
 gate_oacc_kernels (function *fn)
 {
-  if (flag_tree_parallelize_loops <= 1)
+  if (!flag_openacc)
     return false;
 
   tree oacc_function_attr = get_oacc_fn_attrib (fn->decl);
@@ -230,10 +230,9 @@ public:
   virtual bool gate (function *)
   {
     return (optimize
-	    /* Don't bother doing anything if the program has errors.  */
-	    && !seen_error ()
 	    && flag_openacc
-	    && flag_tree_parallelize_loops > 1);
+	    /* Don't bother doing anything if the program has errors.  */
+	    && !seen_error ());
   }
 
 }; // class pass_ipa_oacc