]> gcc.gnu.org Git - gcc.git/commitdiff
Further changes for the OpenACC 'if_present' clause on the 'host_data' construct
authorThomas Schwinge <thomas@codesourcery.com>
Fri, 10 Jan 2020 22:23:44 +0000 (23:23 +0100)
committerThomas Schwinge <tschwinge@gcc.gnu.org>
Fri, 10 Jan 2020 22:23:44 +0000 (23:23 +0100)
gcc/
* tree.h (OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT): New definition.
* tree-core.h: Document it.
* gimplify.c (gimplify_omp_workshare): Set it.
* omp-low.c (lower_omp_target): Use it.
* tree-pretty-print.c (dump_omp_clause): Print it.
gcc/testsuite/
* c-c++-common/goacc/host_data-1.c: Extend.
* gfortran.dg/goacc/host_data-tree.f95: Likewise.

gcc/
* omp-low.c (lower_omp_target) <OMP_CLAUSE_USE_DEVICE_PTR etc.>:
Assert that for OpenACC we always have 'GOMP_MAP_USE_DEVICE_PTR'.

libgomp/
* target.c (gomp_map_vars_internal)
<GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT>: Clean up/elaborate code
paths.

From-SVN: r280149

gcc/ChangeLog
gcc/gimplify.c
gcc/omp-low.c
gcc/testsuite/ChangeLog
gcc/testsuite/c-c++-common/goacc/host_data-1.c
gcc/testsuite/gfortran.dg/goacc/host_data-tree.f95
gcc/tree-core.h
gcc/tree-pretty-print.c
gcc/tree.h
libgomp/ChangeLog
libgomp/target.c

index 9e9f8221af4fd57cd65a6b1e8f722e7dc317292b..a195863212ea94a191c4377c1e4a6704ed278540 100644 (file)
@@ -1,3 +1,14 @@
+2020-01-10  Thomas Schwinge  <thomas@codesourcery.com>
+
+       * tree.h (OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT): New definition.
+       * tree-core.h: Document it.
+       * gimplify.c (gimplify_omp_workshare): Set it.
+       * omp-low.c (lower_omp_target): Use it.
+       * tree-pretty-print.c (dump_omp_clause): Print it.
+
+       * omp-low.c (lower_omp_target) <OMP_CLAUSE_USE_DEVICE_PTR etc.>:
+       Assert that for OpenACC we always have 'GOMP_MAP_USE_DEVICE_PTR'.
+
 2020-01-10  David Malcolm  <dmalcolm@redhat.com>
 
        * Makefile.in (OBJS): Add tree-diagnostic-path.o.
index 00d264fc90f405ca17ff7888e92c89cceb69637d..fe7236de4c3ffdb8d43f8577956d21e6be0ebb13 100644 (file)
@@ -12802,14 +12802,21 @@ gimplify_omp_workshare (tree *expr_p, gimple_seq *pre_p)
       stmt = gimple_build_omp_target (body, GF_OMP_TARGET_KIND_OACC_DATA,
                                      OMP_CLAUSES (expr));
       break;
-    case OACC_KERNELS:
-      stmt = gimple_build_omp_target (body, GF_OMP_TARGET_KIND_OACC_KERNELS,
-                                     OMP_CLAUSES (expr));
-      break;
     case OACC_HOST_DATA:
+      if (omp_find_clause (OMP_CLAUSES (expr), OMP_CLAUSE_IF_PRESENT))
+       {
+         for (tree c = OMP_CLAUSES (expr); c; c = OMP_CLAUSE_CHAIN (c))
+           if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_USE_DEVICE_PTR)
+             OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT (c) = 1;
+       }
+
       stmt = gimple_build_omp_target (body, GF_OMP_TARGET_KIND_OACC_HOST_DATA,
                                      OMP_CLAUSES (expr));
       break;
+    case OACC_KERNELS:
+      stmt = gimple_build_omp_target (body, GF_OMP_TARGET_KIND_OACC_KERNELS,
+                                     OMP_CLAUSES (expr));
+      break;
     case OACC_PARALLEL:
       stmt = gimple_build_omp_target (body, GF_OMP_TARGET_KIND_OACC_PARALLEL,
                                      OMP_CLAUSES (expr));
index 9a36192e8ef0489e2b5cf0e0479878bb38909532..eb3fe9688fe479c739fcea1d3778f772bd834d39 100644 (file)
@@ -12006,9 +12006,15 @@ lower_omp_target (gimple_stmt_iterator *gsi_p, omp_context *ctx)
                tkind = GOMP_MAP_FIRSTPRIVATE_INT;
                x = build_sender_ref (ovar, ctx);
              }
-           if (tkind == GOMP_MAP_USE_DEVICE_PTR
-               && omp_find_clause (clauses, OMP_CLAUSE_IF_PRESENT))
-             tkind = GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT;
+
+           if (is_gimple_omp_oacc (ctx->stmt))
+             {
+               gcc_assert (tkind == GOMP_MAP_USE_DEVICE_PTR);
+
+               if (OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT (c))
+                 tkind = GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT;
+             }
+
            type = TREE_TYPE (ovar);
            if (lang_hooks.decls.omp_array_data (ovar, true))
              var = lang_hooks.decls.omp_array_data (ovar, false);
index 6576aee81c81a154053a5be57df6ac2b21a16b92..cccc2853ed59563025b2fea260561986c2f5f071 100644 (file)
@@ -1,3 +1,8 @@
+2020-01-10  Thomas Schwinge  <thomas@codesourcery.com>
+
+       * c-c++-common/goacc/host_data-1.c: Extend.
+       * gfortran.dg/goacc/host_data-tree.f95: Likewise.
+
 2020-01-10  Jakub Jelinek  <jakub@redhat.com>
 
        PR tree-optimization/93210
index 658b7a677bc70825a327099b21d7bd44ab0d8fb4..ac24446146728619e64b323325209c403103029a 100644 (file)
@@ -1,14 +1,20 @@
 /* Test valid use of host_data directive.  */
 
+/* { dg-additional-options "-fdump-tree-original -fdump-tree-gimple" } */
+
 int v1[3][3];
 
 void
 f (void)
 {
 #pragma acc host_data use_device(v1)
+  /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data use_device_ptr\\(v1\\)$" 1 "original" } }
+     { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data use_device_ptr\\(v1\\)$" 1 "gimple" } } */
   ;
 
 #pragma acc host_data use_device(v1) if_present
+  /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data if_present use_device_ptr\\(v1\\)$" 1 "original" } }
+     { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data if_present use_device_ptr\\(if_present:v1\\)$" 1 "gimple" } } */
   ;
 }
 
@@ -16,7 +22,7 @@ f (void)
 void bar (float *, float *);
 
 void
-foo (float *x, float *y)
+foo (float *x, float *y, float *yy)
 {
   int n = 1 << 10;
 #pragma acc data create(x[0:n])
@@ -25,26 +31,38 @@ foo (float *x, float *y)
 
     /* This should fail at run time because y is not mapped.  */
 #pragma acc host_data use_device(x,y)
+    /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data use_device_ptr\\(y\\) use_device_ptr\\(x\\)$" 1 "original" } }
+       { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data use_device_ptr\\(y\\) use_device_ptr\\(x\\)$" 1 "gimple" } } */
     bar (x, y);
 
     /* y is still not mapped, but this should not fail at run time but
        continue execution with y remaining as the host address.  */
 #pragma acc host_data use_device(x,y) if_present
+    /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data if_present use_device_ptr\\(y\\) use_device_ptr\\(x\\)$" 1 "original" } }
+       { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data if_present use_device_ptr\\(if_present:y\\) use_device_ptr\\(if_present:x\\)$" 1 "gimple" } } */
     bar (x, y);
 
-#pragma acc data copyout(y[0:n])
+#pragma acc data copyout(yy[0:n])
     {
-#pragma acc host_data use_device(x,y)
-      bar (x, y);
+#pragma acc host_data use_device(x,yy)
+      /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data use_device_ptr\\(yy\\) use_device_ptr\\(x\\)$" 1 "original" } }
+        { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data use_device_ptr\\(yy\\) use_device_ptr\\(x\\)$" 1 "gimple" } } */
+      bar (x, yy);
 
-#pragma acc host_data use_device(x,y) if_present
-      bar (x, y);
+#pragma acc host_data use_device(x,yy) if_present
+      /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data if_present use_device_ptr\\(yy\\) use_device_ptr\\(x\\)$" 1 "original" } }
+        { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data if_present use_device_ptr\\(if_present:yy\\) use_device_ptr\\(if_present:x\\)$" 1 "gimple" } } */
+      bar (x, yy);
 
-#pragma acc host_data use_device(x,y) if(x != y)
-      bar (x, y);
+#pragma acc host_data use_device(x,yy) if(x != yy)
+      /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data if\\(x \\!= yy\\) use_device_ptr\\(yy\\) use_device_ptr\\(x\\)$" 1 "original" } }
+        { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data if\\(D\\.\[0-9\]+\\) use_device_ptr\\(yy\\) use_device_ptr\\(x\\)$" 1 "gimple" } } */
+      bar (x, yy);
 
-#pragma acc host_data use_device(x,y) if_present if(x != y)
-      bar (x, y);
+#pragma acc host_data use_device(x,yy) if_present if(x == yy)
+      /* { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data if\\(x == yy\\) if_present use_device_ptr\\(yy\\) use_device_ptr\\(x\\)$" 1 "original" } }
+        { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data if\\(D\\.\[0-9\]+\\) if_present use_device_ptr\\(if_present:yy\\) use_device_ptr\\(if_present:x\\)$" 1 "gimple" } } */
+      bar (x, yy);
     }
   }
 }
index 2ac1c0d66d62a511178d9471edc77ca7f3d74a09..558e80014d758b3ffc9edb991a8af7a7260a5166 100644 (file)
@@ -1,21 +1,23 @@
-! { dg-do compile } 
-! { dg-additional-options "-fdump-tree-original" } 
+! { dg-additional-options "-fdump-tree-original -fdump-tree-gimple" }
 
 program test
   implicit none
   integer, pointer :: p
 
   !$acc host_data use_device(p)
+  ! { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data use_device_ptr\\(p\\)$" 1 "original" } }
+  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data use_device_ptr\\(p\\)$" 1 "gimple" } }
   !$acc end host_data
 
   !$acc host_data use_device(p) if (p == 42)
+  ! { dg-final { scan-tree-dump-times "(?n)D\\.\[0-9\]+ = \\*p == 42;$" 1 "original" } }
+  ! { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data use_device_ptr\\(p\\) if\\(D\\.\[0-9\]+\\)$" 1 "original" } }
+  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data use_device_ptr\\(p\\) if\\(D\\.\[0-9\]+\\)$" 1 "gimple" } }
   !$acc end host_data
 
   !$acc host_data use_device(p) if_present if (p == 43)
+  ! { dg-final { scan-tree-dump-times "(?n)D\\.\[0-9\]+ = \\*p == 43;$" 1 "original" } }
+  ! { dg-final { scan-tree-dump-times "(?n)#pragma acc host_data use_device_ptr\\(p\\) if\\(D\\.\[0-9\]+\\) if_present$" 1 "original" } }
+  ! { dg-final { scan-tree-dump-times "(?n)#pragma omp target oacc_host_data use_device_ptr\\(if_present:p\\) if\\(D\\.\[0-9\]+\\) if_present$" 1 "gimple" } }
   !$acc end host_data
 end program test
-! { dg-final { scan-tree-dump-times "pragma acc host_data use_device_ptr\\(p\\)" 3 "original" } }
-! { dg-final { scan-tree-dump-times "D.\[0-9\]+ = \\*p == 42;" 1 "original" } }
-! { dg-final { scan-tree-dump-times "pragma acc host_data use_device_ptr\\(p\\) if\\(D.\[0-9\]+\\)" 2 "original" } }
-! { dg-final { scan-tree-dump-times "D.\[0-9\]+ = \\*p == 43;" 1 "original" } }
-! { dg-final { scan-tree-dump-times "pragma acc host_data use_device_ptr\\(p\\) if\\(D.\[0-9\]+\\) if_present" 1 "original" } }
index 62130f488ccf928414e276fb1545da8763b62016..765ea2a9542309ad739a5ccebca4dd1867200ec7 100644 (file)
@@ -1175,6 +1175,9 @@ struct GTY(()) tree_base {
        OMP_CLAUSE_REDUCTION_OMP_ORIG_REF in
           OMP_CLAUSE_{,TASK_,IN_}REDUCTION
 
+       OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT in
+          OMP_CLAUSE_USE_DEVICE_PTR
+
        TRANSACTION_EXPR_RELAXED in
           TRANSACTION_EXPR
 
index e895a4f6609993c31473605f24d7e7bec23c734f..fe2e62b31ba0a8d701d86d1f13756111cf085ea9 100644 (file)
@@ -432,7 +432,7 @@ static void
 dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
 {
   const char *name;
-
+  const char *modifier = NULL;
   switch (OMP_CLAUSE_CODE (clause))
     {
     case OMP_CLAUSE_PRIVATE:
@@ -446,13 +446,9 @@ dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
       goto print_remap;
     case OMP_CLAUSE_LASTPRIVATE:
       name = "lastprivate";
-      if (!OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (clause))
-       goto print_remap;
-      pp_string (pp, "lastprivate(conditional:");
-      dump_generic_node (pp, OMP_CLAUSE_DECL (clause),
-                        spc, flags, false);
-      pp_right_paren (pp);
-      break;
+      if (OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (clause))
+       modifier = "conditional:";
+      goto print_remap;
     case OMP_CLAUSE_COPYIN:
       name = "copyin";
       goto print_remap;
@@ -464,6 +460,8 @@ dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
       goto print_remap;
     case OMP_CLAUSE_USE_DEVICE_PTR:
       name = "use_device_ptr";
+      if (OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT (clause))
+       modifier = "if_present:";
       goto print_remap;
     case OMP_CLAUSE_USE_DEVICE_ADDR:
       name = "use_device_addr";
@@ -501,6 +499,8 @@ dump_omp_clause (pretty_printer *pp, tree clause, int spc, dump_flags_t flags)
   print_remap:
       pp_string (pp, name);
       pp_left_paren (pp);
+      if (modifier)
+       pp_string (pp, modifier);
       dump_generic_node (pp, OMP_CLAUSE_DECL (clause),
                         spc, flags, false);
       pp_right_paren (pp);
index 9ca9ab58ec020074a9ff8cdf6140563eaa3e1ec2..93422206b63de5e6a907c2f845a25ff4dd7c8b55 100644 (file)
@@ -1627,6 +1627,11 @@ class auto_suppress_location_wrappers
 #define OMP_CLAUSE_MAP_IN_REDUCTION(NODE) \
   TREE_PRIVATE (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_MAP))
 
+/* True on an OMP_CLAUSE_USE_DEVICE_PTR with an OpenACC 'if_present'
+   clause.  */
+#define OMP_CLAUSE_USE_DEVICE_PTR_IF_PRESENT(NODE) \
+  (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_USE_DEVICE_PTR)->base.public_flag)
+
 #define OMP_CLAUSE_PROC_BIND_KIND(NODE) \
   (OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_PROC_BIND)->omp_clause.subcode.proc_bind_kind)
 
index 152e52c21c11c9c0919cb1082b95d1543a2f3945..81d0c164a3a4bf0e9a6aef9f2b6450cb2b5a8dd7 100644 (file)
@@ -1,3 +1,9 @@
+2020-01-10  Thomas Schwinge  <thomas@codesourcery.com>
+
+       * target.c (gomp_map_vars_internal)
+       <GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT>: Clean up/elaborate code
+       paths.
+
 2020-01-10  Jakub Jelinek  <jakub@redhat.com>
 
        PR libgomp/93219
index 522b69e6d5d17642041776a083058f614592394e..38de1c0cf922b752e40c365cdba21bb67568658b 100644 (file)
@@ -740,22 +740,24 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
              cur_node.host_start = (uintptr_t) hostaddrs[i];
              cur_node.host_end = cur_node.host_start;
              splay_tree_key n = gomp_map_lookup (mem_map, &cur_node);
-             if (n == NULL)
+             if (n != NULL)
+               {
+                 cur_node.host_start -= n->host_start;
+                 hostaddrs[i]
+                   = (void *) (n->tgt->tgt_start + n->tgt_offset
+                               + cur_node.host_start);
+               }
+             else if ((kind & typemask) == GOMP_MAP_USE_DEVICE_PTR)
                {
-                 if ((kind & typemask) == GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT)
-                   {
-                     /* If not present, continue using the host address.  */
-                     tgt->list[i].offset = 0;
-                     continue;
-                   }
                  gomp_mutex_unlock (&devicep->lock);
                  gomp_fatal ("use_device_ptr pointer wasn't mapped");
                }
-             cur_node.host_start -= n->host_start;
-             hostaddrs[i]
-               = (void *) (n->tgt->tgt_start + n->tgt_offset
-                           + cur_node.host_start);
-             tgt->list[i].offset = ~(uintptr_t) 0;
+             else if ((kind & typemask) == GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT)
+               /* If not present, continue using the host address.  */
+               ;
+             else
+               __builtin_unreachable ();
+             tgt->list[i].offset = OFFSET_INLINED;
            }
          else
            tgt->list[i].offset = 0;
@@ -980,27 +982,40 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
              case GOMP_MAP_FIRSTPRIVATE_INT:
              case GOMP_MAP_ZERO_LEN_ARRAY_SECTION:
                continue;
-             case GOMP_MAP_USE_DEVICE_PTR:
              case GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT:
+               /* The OpenACC 'host_data' construct only allows 'use_device'
+                  "mapping" clauses, so in the first loop, 'not_found_cnt'
+                  must always have been zero, so all OpenACC 'use_device'
+                  clauses have already been handled.  (We can only easily test
+                  'use_device' with 'if_present' clause here.)  */
+               assert (tgt->list[i].offset == OFFSET_INLINED);
+               /* Nevertheless, FALLTHRU to the normal handling, to keep the
+                  code conceptually simple, similar to the first loop.  */
+             case GOMP_MAP_USE_DEVICE_PTR:
                if (tgt->list[i].offset == 0)
                  {
                    cur_node.host_start = (uintptr_t) hostaddrs[i];
                    cur_node.host_end = cur_node.host_start;
                    n = gomp_map_lookup (mem_map, &cur_node);
-                   if (n == NULL)
+                   if (n != NULL)
+                     {
+                       cur_node.host_start -= n->host_start;
+                       hostaddrs[i]
+                         = (void *) (n->tgt->tgt_start + n->tgt_offset
+                                     + cur_node.host_start);
+                     }
+                   else if ((kind & typemask) == GOMP_MAP_USE_DEVICE_PTR)
                      {
-                       if ((kind & typemask)
-                           == GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT)
-                         /* If not present, continue using the host address.  */
-                         continue;
                        gomp_mutex_unlock (&devicep->lock);
                        gomp_fatal ("use_device_ptr pointer wasn't mapped");
                      }
-                   cur_node.host_start -= n->host_start;
-                   hostaddrs[i]
-                     = (void *) (n->tgt->tgt_start + n->tgt_offset
-                                 + cur_node.host_start);
-                   tgt->list[i].offset = ~(uintptr_t) 0;
+                   else if ((kind & typemask)
+                            == GOMP_MAP_USE_DEVICE_PTR_IF_PRESENT)
+                     /* If not present, continue using the host address.  */
+                     ;
+                   else
+                     __builtin_unreachable ();
+                   tgt->list[i].offset = OFFSET_INLINED;
                  }
                continue;
              case GOMP_MAP_STRUCT:
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