OpenACC 'kernels' decomposition: Move 'TREE_ADDRESSABLE' setting into OMP lowering [PR100280]

... in preparation for later changes.  No functional change.

Follow-up to commit 9b32c1669aad5459dd053424f9967011348add83
"OpenACC 'kernels' decomposition: Mark variables used in
synthesized data clauses as addressable [PR100280]".

	PR middle-end/100280
	gcc/
	* tree.h (OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE): New.
	* tree-core.h: Document it.
	* omp-low.cc (scan_sharing_clauses) <OMP_CLAUSE_MAP>: Handle
	'OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE'.
	* omp-oacc-kernels-decompose.cc (maybe_build_inner_data_region):
	Set 'OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE' instead of
	'TREE_ADDRESSABLE'.
	gcc/testsuite/
	* c-c++-common/goacc/classify-kernels-unparallelized.c: Adjust.
	* c-c++-common/goacc/classify-kernels.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-2.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-pr100280-1.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-pr104061-1-2.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-pr104061-1-3.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-pr104061-1-4.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-pr104132-1.c: Likewise.
	* c-c++-common/goacc/kernels-decompose-pr104133-1.c: Likewise.
	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/f-asyncwait-1.c: Adjust.
	* testsuite/libgomp.oacc-c-c++-common/kernels-decompose-1.c:
	Likewise.

13 files changed, 62 insertions, 12 deletions

diff --git a/gcc/omp-low.cc b/gcc/omp-low.cc
index 2294456..6654bfd 100644
--- a/gcc/omp-low.cc
+++ b/gcc/omp-low.cc
@@ -1495,6 +1495,37 @@ scan_sharing_clauses (tree clauses, omp_context *ctx)
 	  if (ctx->outer)
 	    scan_omp_op (&OMP_CLAUSE_SIZE (c), ctx->outer);
 	  decl = OMP_CLAUSE_DECL (c);
+	  /* If requested, make 'decl' addressable.  */
+	  if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_MAP
+	      && OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE (c))
+	    {
+	      gcc_checking_assert (DECL_P (decl));
+
+	      gcc_checking_assert (!TREE_ADDRESSABLE (decl));
+	      TREE_ADDRESSABLE (decl) = 1;
+
+	      if (dump_enabled_p ())
+		{
+		  location_t loc = OMP_CLAUSE_LOCATION (c);
+		  const dump_user_location_t d_u_loc
+		    = dump_user_location_t::from_location_t (loc);
+		  /* PR100695 "Format decoder, quoting in 'dump_printf' etc." */
+#if __GNUC__ >= 10
+# pragma GCC diagnostic push
+# pragma GCC diagnostic ignored "-Wformat"
+#endif
+		  dump_printf_loc (MSG_NOTE, d_u_loc,
+				   "variable %<%T%>"
+				   " made addressable\n",
+				   decl);
+#if __GNUC__ >= 10
+# pragma GCC diagnostic pop
+#endif
+		}
+
+	      /* Done.  */
+	      OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE (c) = 0;
+	    }
 	  /* Global variables with "omp declare target" attribute
 	     don't need to be copied, the receiver side will use them
 	     directly.  However, global variables with "omp declare target link"
diff --git a/gcc/omp-oacc-kernels-decompose.cc b/gcc/omp-oacc-kernels-decompose.cc
index 5093386..ecbd307 100644
--- a/gcc/omp-oacc-kernels-decompose.cc
+++ b/gcc/omp-oacc-kernels-decompose.cc
@@ -847,7 +847,8 @@ maybe_build_inner_data_region (location_t loc, gimple *body,
 	  /* See <https://gcc.gnu.org/PR100280>.  */
 	  if (!TREE_ADDRESSABLE (v))
 	    {
-	      TREE_ADDRESSABLE (v) = 1;
+	      /* Request that OMP lowering make 'v' addressable.  */
+	      OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE (new_clause) = 1;
 
 	      if (dump_enabled_p ())
 		{
@@ -861,7 +862,7 @@ maybe_build_inner_data_region (location_t loc, gimple *body,
 		  dump_printf_loc (MSG_NOTE, d_u_loc,
 				   "OpenACC %<kernels%> decomposition:"
 				   " variable %<%T%> declared in block"
-				   " made addressable\n",
+				   " requested to be made addressable\n",
 				   v);
 #if __GNUC__ >= 10
 # pragma GCC diagnostic pop
diff --git a/gcc/testsuite/c-c++-common/goacc/classify-kernels-unparallelized.c b/gcc/testsuite/c-c++-common/goacc/classify-kernels-unparallelized.c
index 2496462..61871d1 100644
--- a/gcc/testsuite/c-c++-common/goacc/classify-kernels-unparallelized.c
+++ b/gcc/testsuite/c-c++-common/goacc/classify-kernels-unparallelized.c
@@ -29,7 +29,8 @@ extern unsigned int f (unsigned int);
 void KERNELS ()
 {
 #pragma acc kernels copyin (a[0:N], b[0:N]) copyout (c[0:N]) /* { dg-line l_compute1 } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block requested to be made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {variable 'i' made addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable 'i' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable '[abc]\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-optimized {assigned OpenACC seq loop parallelism} {} { target *-*-* } l_compute1 } */
diff --git a/gcc/testsuite/c-c++-common/goacc/classify-kernels.c b/gcc/testsuite/c-c++-common/goacc/classify-kernels.c
index 3ba0411..1473337 100644
--- a/gcc/testsuite/c-c++-common/goacc/classify-kernels.c
+++ b/gcc/testsuite/c-c++-common/goacc/classify-kernels.c
@@ -25,7 +25,8 @@ extern unsigned int *__restrict c;
 void KERNELS ()
 {
 #pragma acc kernels copyin (a[0:N], b[0:N]) copyout (c[0:N]) /* { dg-line l_compute1 } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block requested to be made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {variable 'i' made addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable 'i' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable '[abc]\.[0-9]+' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-optimized {assigned OpenACC gang loop parallelism} {} { target *-*-* } l_compute1 } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-2.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-2.c
index 5fbd102..bf15831 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-2.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-2.c
@@ -66,14 +66,16 @@ main ()
 
 #pragma acc kernels /* { dg-line l_compute[incr c_compute] } */
   /* { dg-note {beginning 'gang-single' part in OpenACC 'kernels' region} {} { target *-*-* } l_compute$c_compute } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block made addressable} {} { target *-*-* } l_compute$c_compute } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block requested to be made addressable} {} { target *-*-* } l_compute$c_compute } */
+  /* { dg-note {variable 'i' made addressable} {} { target *-*-* } l_compute$c_compute } */
   /* { dg-note {variable 'i' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_compute$c_compute } */
   {
     int i;
   }
 
 #pragma acc kernels /* { dg-line l_compute[incr c_compute] } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block made addressable} {} { target *-*-* } l_compute$c_compute } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block requested to be made addressable} {} { target *-*-* } l_compute$c_compute } */
+  /* { dg-note {variable 'i' made addressable} {} { target *-*-* } l_compute$c_compute } */
   /* { dg-note {variable 'i' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_compute$c_compute } */
   /* { dg-optimized {assigned OpenACC gang loop parallelism} {} { target *-*-* } l_compute$c_compute } */
   /* { dg-note {beginning 'parloops' part in OpenACC 'kernels' region} {} { target *-*-* } .+1 } */
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr100280-1.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr100280-1.c
index 91e5897..1c1e22c 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr100280-1.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr100280-1.c
@@ -10,7 +10,8 @@ void
 foo (void) /* { dg-line l_f_1 } */
 {
 #pragma acc kernels /* { dg-line l_k_1 } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block made addressable} {} { target *-*-* } l_k_1 } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'i' declared in block requested to be made addressable} {} { target *-*-* } l_k_1 } */
+  /* { dg-note {variable 'i' made addressable} {} { target *-*-* } l_k_1 } */
   /* { dg-note {variable 'i' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_k_1 } */
   /* { dg-optimized {assigned OpenACC seq loop parallelism} {} { target *-*-* } l_k_1 } */
   /* { dg-bogus {note: beginning 'parloops' part in OpenACC 'kernels' region} {TODO location} { xfail *-*-* } l_f_1 }
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-2.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-2.c
index 8ca02cb..336cf2a 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-2.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-2.c
@@ -16,7 +16,8 @@ foo (void)
 {
   /* { dg-bogus {sorry, unimplemented: 'gimple_debug' not yet supported} TODO { xfail *-*-* } .+1 } */
 #pragma acc kernels /* { dg-line l_compute1 } */
-  /* { dg-bogus {note: OpenACC 'kernels' decomposition: variable 'k' declared in block made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
+  /* { dg-bogus {note: OpenACC 'kernels' decomposition: variable 'k' declared in block requested to be made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
+  /* { dg-bogus {note: variable 'k' made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
   /* { dg-note {variable 'arr_0\.0' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { xfail *-*-* } l_compute1 } */
   {
     /* { dg-bogus {note: beginning 'gang-single' part in OpenACC 'kernels' region} {w/ debug} { xfail c++ } .-1 }
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-3.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-3.c
index 05a196d..f41dda8 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-3.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-3.c
@@ -23,7 +23,8 @@ foo (void)
 {
   /* { dg-bogus {sorry, unimplemented: 'gimple_debug' not yet supported} {} { target *-*-* } .+1 } suppressed via '-fcompare-debug'.  */
 #pragma acc kernels /* { dg-line l_compute1 } */
-  /* { dg-bogus {note: OpenACC 'kernels' decomposition: variable 'k' declared in block made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
+  /* { dg-bogus {note: OpenACC 'kernels' decomposition: variable 'k' declared in block requested to be made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
+  /* { dg-bogus {note: variable 'k' made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
   /* { dg-bogus {note: variable 'k' declared in block is candidate for adjusting OpenACC privatization level} {w/ debug} { xfail *-*-* } l_compute1 } */
   /* { dg-note {variable 'arr_0\.0' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_compute1 } */
   {
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-4.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-4.c
index 07cb592..cde95a7 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-4.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104061-1-4.c
@@ -21,7 +21,8 @@ foo (void)
 {
   /* { dg-bogus {sorry, unimplemented: 'gimple_debug' not yet supported} {} { target *-*-* } .+1 } suppressed via '-fcompare-debug'.  */
 #pragma acc kernels /* { dg-line l_compute1 } */
-  /* { dg-bogus {note: OpenACC 'kernels' decomposition: variable 'k' declared in block made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
+  /* { dg-bogus {note: OpenACC 'kernels' decomposition: variable 'k' declared in block requested to be made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
+  /* { dg-bogus {note: variable 'k' made addressable} {w/ debug} { xfail *-*-* } l_compute1 } */
   /* { dg-bogus {note: variable 'k' declared in block is candidate for adjusting OpenACC privatization level} {w/ debug} { xfail *-*-* } l_compute1 } */
   /* { dg-note {variable 'arr_0\.0' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_compute1 } */
   {
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104132-1.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104132-1.c
index 5b0fe42..4f38a83 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104132-1.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104132-1.c
@@ -18,7 +18,8 @@ void
 foo (void)
 {
 #pragma acc kernels /* { dg-line l_compute1 } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'k' declared in block made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'k' declared in block requested to be made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {variable 'k' made addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable 'k' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_compute1 } */
   {
     int k;
diff --git a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104133-1.c b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104133-1.c
index 4536b5c..0499665 100644
--- a/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104133-1.c
+++ b/gcc/testsuite/c-c++-common/goacc/kernels-decompose-pr104133-1.c
@@ -18,7 +18,8 @@ void
 foo (void)
 {
 #pragma acc kernels /* { dg-line l_compute1 } */
-  /* { dg-note {OpenACC 'kernels' decomposition: variable 'k' declared in block made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {OpenACC 'kernels' decomposition: variable 'k' declared in block requested to be made addressable} {} { target *-*-* } l_compute1 } */
+  /* { dg-note {variable 'k' made addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable 'k' declared in block is candidate for adjusting OpenACC privatization level} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable 'arr_0\.0' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_compute1 } */
   /* { dg-note {variable 'arr_0\.1' declared in block isn't candidate for adjusting OpenACC privatization level: not addressable} {} { target *-*-* } l_compute1 } */
diff --git a/gcc/tree-core.h b/gcc/tree-core.h
index 01a1ce4..4530bd8 100644
--- a/gcc/tree-core.h
+++ b/gcc/tree-core.h
@@ -1155,6 +1155,9 @@ struct GTY(()) tree_base {
        PREDICT_EXPR_OUTCOME in
 	   PREDICT_EXPR
 
+       OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE in
+	   OMP_CLAUSE
+
    static_flag:
 
        TREE_STATIC in
diff --git a/gcc/tree.h b/gcc/tree.h
index 36ceed5..da6f3b3 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -1699,6 +1699,11 @@ class auto_suppress_location_wrappers
 #define OMP_CLAUSE_MAP_RUNTIME_IMPLICIT_P(NODE) \
   (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_MAP)->base.deprecated_flag)
 
+/* Flag that 'OMP_CLAUSE_DECL (NODE)' is to be made addressable during OMP
+   lowering.  */
+#define OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE(NODE) \
+  (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_MAP)->base.addressable_flag)
+
 /* True on an OMP_CLAUSE_USE_DEVICE_PTR with an OpenACC 'if_present'
    clause.  */
 #define OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT(NODE) \