[Fortran, accaf, patch, v1] Fixing compatibility with opencoarrays (mostly)

[Andre Vehreschild]

Hi all,

attached patch fixes compatibility with opencoarrays by using the old coarray
interface of caf_get() as long as possible.

Bootstrapped and regtested ok on x86_64-linux/F23. Ok for trunk?

Regards,
        Andre
-- 
Andre Vehreschild * Email: vehre ad gmx dot de 

gcc/fortran/ChangeLog:

2016-09-22  Andre Vehreschild  <ve...@gcc.gnu.org>

        * trans-intrinsic.c (gfc_conv_intrinsic_caf_get): Use the old caf-
        interface where possible.

gcc/testsuite/ChangeLog:

2016-09-22  Andre Vehreschild  <ve...@gcc.gnu.org>

        * gfortran.dg/coarray_lib_comm_1.f90: Using the old caf-interface
        here now.


diff --git a/gcc/fortran/trans-intrinsic.c b/gcc/fortran/trans-intrinsic.c
index c6883dc..d3f6842 100644
--- a/gcc/fortran/trans-intrinsic.c
+++ b/gcc/fortran/trans-intrinsic.c
@@ -1607,10 +1607,9 @@ gfc_conv_intrinsic_caf_get (gfc_se *se, gfc_expr *expr, tree lhs, tree lhs_kind,
   else
     stat = null_pointer_node;
 
-  /* Always use the new get_by_ref ().  When no allocatable components are
-     present and the lhs does not reallocation then the "old" get () might
-     suffice.  */
-  if (true) //caf_attr->alloc_comp && !may_realloc)
+  /* Only use the new get_by_ref () where it is necessary.  I.e., when the lhs
+     is reallocatable or the right-hand side has allocatable components.  */
+  if (caf_attr->alloc_comp || may_realloc)
     {
       /* Get using caf_get_by_ref.  */
       caf_reference = conv_expr_ref_to_caf_ref (&se->pre, array_expr);
diff --git a/gcc/testsuite/gfortran.dg/coarray_lib_comm_1.f90 b/gcc/testsuite/gfortran.dg/coarray_lib_comm_1.f90
index 7ab5ab4..cfd1e64 100644
--- a/gcc/testsuite/gfortran.dg/coarray_lib_comm_1.f90
+++ b/gcc/testsuite/gfortran.dg/coarray_lib_comm_1.f90
@@ -40,7 +40,7 @@ end
 
 ! { dg-final { scan-tree-dump-times "_gfortran_caf_sendget \\\(caf_token.0, \\\(integer\\\(kind=\[48\]\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=\[48\]\\\)\\\) a, _gfortran_caf_this_image \\\(0\\\), &parm.\[0-9\]+, 0B, caf_token.0, \\\(integer\\\(kind=\[48\]\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=\[48\]\\\)\\\) a, 1, &parm.\[0-9\]+, 0B, 4, 4, 0, 0B\\\);" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "_gfortran_caf_sendget \\\(caf_token.0, \\\(integer\\\(kind=\[48\]\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=\[48\]\\\)\\\) a, _gfortran_caf_this_image \\\(0\\\), &parm.\[0-9\]+, 0B, caf_token.0, \\\(integer\\\(kind=\[48\]\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=\[48\]\\\)\\\) a, 1, &parm.\[0-9\]+, 0B, 4, 4, 1, 0B\\\);" 1 "original" } }
-! { dg-final { scan-tree-dump-times "_gfortran_caf_get_by_ref \\\(caf_token.0, 1, &p, &caf_ref.\[0-9\]+, 4, 4, 1, 0, 0B\\\);" 1 "original" } }
-! { dg-final { scan-tree-dump-times "_gfortran_caf_get_by_ref \\\(caf_token.1, 1, &p, &caf_ref.\[0-9\]+, 4, 4, 0, 0, 0B\\\);" 1 "original" } }
+! { dg-final { scan-tree-dump-times "_gfortran_caf_get \\\(caf_token.0, \\\(integer\\\(kind=8\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=8\\\)\\\) a, 1, &parm.\[0-9\]+, 0B, &p, 4, 4, 1, 0B\\\);" 1 "original" } }
+! { dg-final { scan-tree-dump-times "_gfortran_caf_get \\\(caf_token.1, \\\(integer\\\(kind=8\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=8\\\)\\\) b, 1, &parm.\[0-9\]+, 0B, &p, 4, 4, 0, 0B\\\);" 1 "original" } }
 ! { dg-final { scan-tree-dump-times "_gfortran_caf_sendget \\\(caf_token.0, \\\(integer\\\(kind=\[48\]\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=\[48\]\\\)\\\) a, 1, &parm.\[0-9\]+, 0B, caf_token.0, \\\(integer\\\(kind=\[48\]\\\)\\\) parm.\[0-9\]+.data - \\\(integer\\\(kind=\[48\]\\\)\\\) a, 1, &parm.\[0-9\]+, 0B, 4, 4, 0, 0B\\\);" 1 "original" } }