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[gomp4.1] Doacross tweaks
- From: Jakub Jelinek <jakub at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Aldy Hernandez <aldyh at redhat dot com>
- Date: Fri, 25 Sep 2015 18:54:47 +0200
- Subject: [gomp4.1] Doacross tweaks
- Authentication-results: sourceware.org; auth=none
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
Hi!
The latest spec proposals change the meaning of the ordered(n) clause
if collapse > 1 to count the number of source loops.
The ordered >= collapse requirement is something I'm pushing for even when
it is not in the spec (yet).
And, finally, another proposed change is that the + or - signs in the sink:
vector are significant (primarily for unsigned iterators).
Tested on x86_64-linux, committed to gomp-4_1-branch.
2015-09-25 Jakub Jelinek <jakub@redhat.com>
* tree.h (OMP_CLAUSE_DEPEND_SINK_NEGATIVE): Define.
* omp-low.c (extract_omp_for_data, expand_omp_for_init_counts,
expand_omp_ordered_source, expand_omp_ordered_sink,
expand_omp_for_ordered_loops, expand_omp_for_generic): Adjust
for fd->ordered being newly 0 when it used to be 0 before,
but otherwise being equal to fd->collapse - 1 + old fd->ordered.
expand_omp_ordered_source_sink): Likewise. Warn for lexically
later iteration sink, or for sink on iteration never in iteration
space. Use OMP_CLAUSE_DEPEND_SINK_NEGATIVE.
(lower_depend_clauses): Assert not seeing sink/source depend kinds.
* tree-pretty-print.c (dump_omp_clause): Use
OMP_CLAUSE_DEPEND_SINK_NEGATIVE for the +/- sign of sink vector
constants.
gcc/c/
* c-parser.c (c_parser_omp_clause_depend_sink): Put - sign
into OMP_CLAUSE_DEPEND_SINK_NEGATIVE instead of negating the number.
(c_parser_omp_for_loop): Adjust for ordered clause counting
source loops before collapsing instead of after it. Require
ordered clause parameter to be >= collapse parameter.
gcc/cp/
* parser.c (cp_parser_omp_clause_depend_sink): Put - sign
into OMP_CLAUSE_DEPEND_SINK_NEGATIVE instead of negating the number.
(cp_parser_omp_for_loop): Adjust for ordered clause counting
source loops before collapsing instead of after it. Require
ordered clause parameter to be >= collapse parameter.
* pt.c (tsubst_omp_clause_decl): Copy
OMP_CLAUSE_DEPEND_SINK_NEGATIVE flag.
gcc/testsuite/
* c-c++-common/gomp/sink-1.c (foo): Adjust for new meaning of
ordered clause on collapse > 1 loops.
* gcc.dg/gomp/sink-fold-2.c (funk): Remove xfails and adjust
for new diagnostics wording and only warnings, no errors.
libgomp/
* testsuite/libgomp.c/doacross-1.c (main): Adjust for new meaning of
ordered clause on collapse > 1 loops.
--- gcc/tree.h.jj 2015-09-03 16:36:19.000000000 +0200
+++ gcc/tree.h 2015-09-25 13:40:16.739807842 +0200
@@ -1446,6 +1446,9 @@ extern void protected_set_expr_location
#define OMP_CLAUSE_DEPEND_KIND(NODE) \
(OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_DEPEND)->omp_clause.subcode.depend_kind)
+#define OMP_CLAUSE_DEPEND_SINK_NEGATIVE(NODE) \
+ TREE_PUBLIC (TREE_LIST_CHECK (NODE))
+
#define OMP_CLAUSE_MAP_KIND(NODE) \
((enum gomp_map_kind) OMP_CLAUSE_SUBCODE_CHECK (NODE, OMP_CLAUSE_MAP)->omp_clause.subcode.map_kind)
#define OMP_CLAUSE_SET_MAP_KIND(NODE, MAP_KIND) \
--- gcc/omp-low.c.jj 2015-09-24 20:20:32.000000000 +0200
+++ gcc/omp-low.c 2015-09-25 18:17:13.331812912 +0200
@@ -565,7 +565,7 @@ extract_omp_for_data (gomp_for *for_stmt
? integer_zero_node : integer_one_node;
}
- int cnt = fd->collapse + (fd->ordered > 0 ? fd->ordered - 1 : 0);
+ int cnt = fd->ordered ? fd->ordered : fd->collapse;
for (i = 0; i < cnt; i++)
{
if (i == 0 && fd->collapse == 1 && (fd->ordered == 0 || loops == NULL))
@@ -6761,7 +6761,7 @@ expand_omp_for_init_counts (struct omp_f
return;
}
- for (i = fd->collapse; i < fd->collapse + fd->ordered - 1; i++)
+ for (i = fd->collapse; i < fd->ordered; i++)
{
tree itype = TREE_TYPE (fd->loops[i].v);
counts[i] = NULL_TREE;
@@ -6770,12 +6770,12 @@ expand_omp_for_init_counts (struct omp_f
fold_convert (itype, fd->loops[i].n2));
if (t && integer_zerop (t))
{
- for (i = fd->collapse; i < fd->collapse + fd->ordered - 1; i++)
+ for (i = fd->collapse; i < fd->ordered; i++)
counts[i] = build_int_cst (type, 0);
break;
}
}
- for (i = 0; i < fd->collapse + (fd->ordered ? fd->ordered - 1 : 0); i++)
+ for (i = 0; i < (fd->ordered ? fd->ordered : fd->collapse); i++)
{
tree itype = TREE_TYPE (fd->loops[i].v);
@@ -7074,8 +7074,7 @@ expand_omp_ordered_source (gimple_stmt_i
enum built_in_function source_ix = BUILT_IN_GOMP_DOACROSS_POST;
gimple g
= gimple_build_call (builtin_decl_explicit (source_ix), 1,
- build_fold_addr_expr (counts[fd->collapse
- + fd->ordered - 1]));
+ build_fold_addr_expr (counts[fd->ordered]));
gimple_set_location (g, loc);
gsi_insert_before (gsi, g, GSI_SAME_STMT);
}
@@ -7091,13 +7090,38 @@ expand_omp_ordered_sink (gimple_stmt_ite
tree t, off, coff = NULL_TREE, deps = OMP_CLAUSE_DECL (c), cond = NULL_TREE;
int i;
gimple_stmt_iterator gsi2 = *gsi;
+ bool warned_step = false;
+ for (i = 0; i < fd->ordered; i++)
+ {
+ off = TREE_PURPOSE (deps);
+ if (!integer_zerop (off))
+ {
+ gcc_assert (fd->loops[i].cond_code == LT_EXPR
+ || fd->loops[i].cond_code == GT_EXPR);
+ bool forward = fd->loops[i].cond_code == LT_EXPR;
+ if (forward ^ OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps))
+ warning_at (loc, 0, "%<depend(sink)%> clause waiting for "
+ "lexically later iteration");
+ break;
+ }
+ deps = TREE_CHAIN (deps);
+ }
+ /* If all offsets corresponding to the collapsed loops are zero,
+ this depend clause can be ignored. FIXME: but there is still a
+ flush needed. We need to emit one __sync_synchronize () for it
+ though (perhaps conditionally)? Solve this together with the
+ conservative dependence folding optimization.
+ if (i >= fd->collapse)
+ return; */
+
+ deps = OMP_CLAUSE_DECL (c);
gsi_prev (&gsi2);
edge e1 = split_block (gsi_bb (gsi2), gsi_stmt (gsi2));
edge e2 = split_block_after_labels (e1->dest);
*gsi = gsi_after_labels (e1->dest);
- for (i = 0; i < fd->collapse + fd->ordered - 1; i++)
+ for (i = 0; i < fd->ordered; i++)
{
tree itype = TREE_TYPE (fd->loops[i].v);
if (POINTER_TYPE_P (itype))
@@ -7114,51 +7138,34 @@ expand_omp_ordered_sink (gimple_stmt_ite
tree a;
tree co = fold_convert_loc (loc, itype, off);
if (POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v)))
- a = fold_build2_loc (loc, POINTER_PLUS_EXPR,
- TREE_TYPE (fd->loops[i].v), fd->loops[i].v,
- co);
+ {
+ if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps))
+ co = fold_build1_loc (loc, NEGATE_EXPR, itype, co);
+ a = fold_build2_loc (loc, POINTER_PLUS_EXPR,
+ TREE_TYPE (fd->loops[i].v), fd->loops[i].v,
+ co);
+ }
+ else if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps))
+ a = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v),
+ fd->loops[i].v, co);
else
a = fold_build2_loc (loc, PLUS_EXPR, TREE_TYPE (fd->loops[i].v),
fd->loops[i].v, co);
- if (!TYPE_UNSIGNED (itype)
- || POINTER_TYPE_P (TREE_TYPE (fd->loops[i].v)))
+ if (fd->loops[i].cond_code == LT_EXPR)
{
- if (fd->loops[i].cond_code == LT_EXPR)
- {
- if (wi::neg_p (co))
- t = fold_build2_loc (loc, GE_EXPR, boolean_type_node, a,
- fd->loops[i].n1);
- else
- t = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a,
- fd->loops[i].n2);
- }
- else if (wi::neg_p (co))
- t = fold_build2_loc (loc, GT_EXPR, boolean_type_node, a,
- fd->loops[i].n2);
- else
- t = fold_build2_loc (loc, LE_EXPR, boolean_type_node, a,
+ if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps))
+ t = fold_build2_loc (loc, GE_EXPR, boolean_type_node, a,
fd->loops[i].n1);
+ else
+ t = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a,
+ fd->loops[i].n2);
}
- else if (fd->loops[i].cond_code == LT_EXPR)
- {
- a = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v),
- a, fd->loops[i].n1);
- t = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v),
- fd->loops[i].n2, fd->loops[i].n1);
- t = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a, t);
- }
+ else if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps))
+ t = fold_build2_loc (loc, GT_EXPR, boolean_type_node, a,
+ fd->loops[i].n2);
else
- {
- a = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v),
- a, fd->loops[i].n2);
- a = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v),
- a,
- build_int_cst (TREE_TYPE (fd->loops[i].v),
- 1));
- t = fold_build2_loc (loc, MINUS_EXPR, TREE_TYPE (fd->loops[i].v),
- fd->loops[i].n1, fd->loops[i].n2);
- t = fold_build2_loc (loc, LT_EXPR, boolean_type_node, a, t);
- }
+ t = fold_build2_loc (loc, LE_EXPR, boolean_type_node, a,
+ fd->loops[i].n1);
}
if (cond)
cond = fold_build2_loc (loc, BIT_AND_EXPR, boolean_type_node, cond, t);
@@ -7172,15 +7179,19 @@ expand_omp_ordered_sink (gimple_stmt_ite
: !integer_minus_onep (fd->loops[i].step))
{
if (TYPE_UNSIGNED (itype) && fd->loops[i].cond_code == GT_EXPR)
- t = fold_build2_loc (loc, TRUNC_MOD_EXPR, itype,
- fold_build1_loc (loc, NEGATE_EXPR, itype,
- off),
+ t = fold_build2_loc (loc, TRUNC_MOD_EXPR, itype, off,
fold_build1_loc (loc, NEGATE_EXPR, itype,
s));
else
t = fold_build2_loc (loc, TRUNC_MOD_EXPR, itype, off, s);
t = fold_build2_loc (loc, EQ_EXPR, boolean_type_node, t,
build_int_cst (itype, 0));
+ if (integer_zerop (t) && !warned_step)
+ {
+ warning_at (loc, 0, "%<depend(sink)%> refers to iteration never "
+ "in the iteration space");
+ warned_step = true;
+ }
cond = fold_build2_loc (loc, BIT_AND_EXPR, boolean_type_node,
cond, t);
}
@@ -7196,13 +7207,13 @@ expand_omp_ordered_sink (gimple_stmt_ite
t = fold_convert_loc (loc, fd->iter_type, t);
}
if (TYPE_UNSIGNED (itype) && fd->loops[i].cond_code == GT_EXPR)
- off = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype,
- fold_build1_loc (loc, NEGATE_EXPR, itype,
- off),
+ off = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, off,
fold_build1_loc (loc, NEGATE_EXPR, itype,
s));
else
off = fold_build2_loc (loc, TRUNC_DIV_EXPR, itype, off, s);
+ if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (deps))
+ off = fold_build1_loc (loc, NEGATE_EXPR, itype, off);
off = fold_convert_loc (loc, fd->iter_type, off);
if (i <= fd->collapse - 1 && fd->collapse > 1)
{
@@ -7251,7 +7262,7 @@ expand_omp_ordered_source_sink (struct o
{
struct omp_region *inner;
int i;
- for (i = fd->collapse - 1; i < fd->collapse + fd->ordered - 1; i++)
+ for (i = fd->collapse - 1; i < fd->ordered; i++)
if (i == fd->collapse - 1 && fd->collapse > 1)
counts[i] = NULL_TREE;
else if (i >= fd->collapse && !cont_bb)
@@ -7261,9 +7272,10 @@ expand_omp_ordered_source_sink (struct o
counts[i] = NULL_TREE;
else
counts[i] = create_tmp_var (fd->iter_type, ".orditer");
- tree atype = build_array_type_nelts (fd->iter_type, fd->ordered);
- counts[fd->collapse + fd->ordered - 1] = create_tmp_var (atype, ".orditera");
- TREE_ADDRESSABLE (counts[fd->collapse + fd->ordered - 1]) = 1;
+ tree atype
+ = build_array_type_nelts (fd->iter_type, fd->ordered - fd->collapse + 1);
+ counts[fd->ordered] = create_tmp_var (atype, ".orditera");
+ TREE_ADDRESSABLE (counts[fd->ordered]) = 1;
for (inner = region->inner; inner; inner = inner->next)
if (inner->type == GIMPLE_OMP_ORDERED)
@@ -7286,25 +7298,25 @@ expand_omp_ordered_source_sink (struct o
}
}
-/* Wrap the body into fd->ordered - 1 loops that aren't collapsed. */
+/* Wrap the body into fd->ordered - fd->collapse loops that aren't
+ collapsed. */
static basic_block
expand_omp_for_ordered_loops (struct omp_for_data *fd, tree *counts,
basic_block cont_bb, basic_block body_bb)
{
- if (fd->ordered <= 1)
+ if (fd->ordered == fd->collapse)
return cont_bb;
if (!cont_bb)
{
gimple_stmt_iterator gsi = gsi_after_labels (body_bb);
- for (int i = fd->collapse; i < fd->collapse + fd->ordered - 1; i++)
+ for (int i = fd->collapse; i < fd->ordered; i++)
{
tree type = TREE_TYPE (fd->loops[i].v);
tree n1 = fold_convert (type, fd->loops[i].n1);
expand_omp_build_assign (&gsi, fd->loops[i].v, n1);
- tree aref = build4 (ARRAY_REF, fd->iter_type,
- counts[fd->collapse + fd->ordered - 1],
+ tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered],
size_int (i - fd->collapse + 1),
NULL_TREE, NULL_TREE);
expand_omp_build_assign (&gsi, aref, build_zero_cst (fd->iter_type));
@@ -7312,7 +7324,7 @@ expand_omp_for_ordered_loops (struct omp
return NULL;
}
- for (int i = fd->collapse + fd->ordered - 2; i >= fd->collapse; i--)
+ for (int i = fd->ordered - 1; i >= fd->collapse; i--)
{
tree t, type = TREE_TYPE (fd->loops[i].v);
gimple_stmt_iterator gsi = gsi_after_labels (body_bb);
@@ -7321,8 +7333,7 @@ expand_omp_for_ordered_loops (struct omp
if (counts[i])
expand_omp_build_assign (&gsi, counts[i],
build_zero_cst (fd->iter_type));
- tree aref = build4 (ARRAY_REF, fd->iter_type,
- counts[fd->collapse + fd->ordered - 1],
+ tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered],
size_int (i - fd->collapse + 1),
NULL_TREE, NULL_TREE);
expand_omp_build_assign (&gsi, aref, build_zero_cst (fd->iter_type));
@@ -7358,8 +7369,7 @@ expand_omp_for_ordered_loops (struct omp
t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE,
true, GSI_SAME_STMT);
}
- aref = build4 (ARRAY_REF, fd->iter_type,
- counts[fd->collapse + fd->ordered - 1],
+ aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered],
size_int (i - fd->collapse + 1), NULL_TREE, NULL_TREE);
expand_omp_build_assign (&gsi, aref, t);
gsi_prev (&gsi);
@@ -7535,8 +7545,7 @@ expand_omp_for_generic (struct omp_regio
int first_zero_iter1 = -1, first_zero_iter2 = -1;
basic_block zero_iter1_bb = NULL, zero_iter2_bb = NULL, l2_dom_bb = NULL;
- counts = XALLOCAVEC (tree, fd->collapse
- + (fd->ordered ? fd->ordered - 1 + 1 : 0));
+ counts = XALLOCAVEC (tree, fd->ordered ? fd->ordered + 1 : fd->collapse);
expand_omp_for_init_counts (fd, &gsi, entry_bb, counts,
zero_iter1_bb, first_zero_iter1,
zero_iter2_bb, first_zero_iter2, l2_dom_bb);
@@ -7547,7 +7556,7 @@ expand_omp_for_generic (struct omp_regio
some loop has zero iterations. But the body shouldn't
be executed in that case, so just avoid uninit warnings. */
for (i = first_zero_iter1;
- i < fd->collapse + (fd->ordered ? fd->ordered - 1 : 0); i++)
+ i < (fd->ordered ? fd->ordered : fd->collapse); i++)
if (SSA_VAR_P (counts[i]))
TREE_NO_WARNING (counts[i]) = 1;
gsi_prev (&gsi);
@@ -7564,7 +7573,7 @@ expand_omp_for_generic (struct omp_regio
/* Some counts[i] vars might be uninitialized if
some loop has zero iterations. But the body shouldn't
be executed in that case, so just avoid uninit warnings. */
- for (i = first_zero_iter2; i < fd->collapse + fd->ordered - 1; i++)
+ for (i = first_zero_iter2; i < fd->ordered; i++)
if (SSA_VAR_P (counts[i]))
TREE_NO_WARNING (counts[i]) = 1;
if (zero_iter1_bb)
@@ -7640,18 +7649,20 @@ expand_omp_for_generic (struct omp_regio
t3 = build_fold_addr_expr (istart0);
if (fd->ordered)
{
- t0 = build_int_cst (unsigned_type_node, fd->ordered);
+ t0 = build_int_cst (unsigned_type_node,
+ fd->ordered - fd->collapse + 1);
arr = create_tmp_var (build_array_type_nelts (fd->iter_type,
- fd->ordered),
+ fd->ordered
+ - fd->collapse + 1),
".omp_counts");
DECL_NAMELESS (arr) = 1;
TREE_ADDRESSABLE (arr) = 1;
TREE_STATIC (arr) = 1;
vec<constructor_elt, va_gc> *v;
- vec_alloc (v, fd->ordered);
+ vec_alloc (v, fd->ordered - fd->collapse + 1);
int idx;
- for (idx = 0; idx < fd->ordered; idx++)
+ for (idx = 0; idx < fd->ordered - fd->collapse + 1; idx++)
{
tree c;
if (idx == 0 && fd->collapse > 1)
@@ -7927,7 +7938,7 @@ expand_omp_for_generic (struct omp_regio
those counts only for collapsed loops, and only for the 2nd
till the last collapsed one. Move those one element earlier,
we'll use counts[fd->collapse - 1] for the first source/sink
- iteration counter and so on and counts[fd->collapse + fd->ordered - 1]
+ iteration counter and so on and counts[fd->ordered]
as the array holding the current counter values for
depend(source). */
if (fd->collapse > 1)
@@ -7944,8 +7955,7 @@ expand_omp_for_generic (struct omp_regio
t = fold_build2 (PLUS_EXPR, fd->iter_type, counts[fd->collapse - 1],
build_int_cst (fd->iter_type, 1));
expand_omp_build_assign (&gsi, counts[fd->collapse - 1], t);
- tree aref = build4 (ARRAY_REF, fd->iter_type,
- counts[fd->collapse + fd->ordered - 1],
+ tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered],
size_zero_node, NULL_TREE, NULL_TREE);
expand_omp_build_assign (&gsi, aref, counts[fd->collapse - 1]);
t = counts[fd->collapse - 1];
@@ -7959,8 +7969,7 @@ expand_omp_for_generic (struct omp_regio
t = fold_convert (fd->iter_type, t);
}
gsi = gsi_last_bb (l0_bb);
- tree aref = build4 (ARRAY_REF, fd->iter_type,
- counts[fd->collapse + fd->ordered - 1],
+ tree aref = build4 (ARRAY_REF, fd->iter_type, counts[fd->ordered],
size_zero_node, NULL_TREE, NULL_TREE);
t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE,
false, GSI_CONTINUE_LINKING);
@@ -8001,8 +8010,8 @@ expand_omp_for_generic (struct omp_regio
t = fold_convert (fd->iter_type, t);
}
tree aref = build4 (ARRAY_REF, fd->iter_type,
- counts[fd->collapse + fd->ordered - 1],
- size_zero_node, NULL_TREE, NULL_TREE);
+ counts[fd->ordered], size_zero_node,
+ NULL_TREE, NULL_TREE);
t = force_gimple_operand_gsi (&gsi, t, true, NULL_TREE,
true, GSI_SAME_STMT);
expand_omp_build_assign (&gsi, aref, t);
@@ -8050,7 +8059,7 @@ expand_omp_for_generic (struct omp_regio
gsi_insert_after (&gsi, call_stmt, GSI_SAME_STMT);
if (fd->ordered)
{
- tree arr = counts[fd->collapse + fd->ordered - 1];
+ tree arr = counts[fd->ordered];
tree clobber = build_constructor (TREE_TYPE (arr), NULL);
TREE_THIS_VOLATILE (clobber) = 1;
gsi_insert_after (&gsi, gimple_build_assign (arr, clobber),
@@ -13613,8 +13622,7 @@ lower_depend_clauses (tree *pclauses, gi
break;
case OMP_CLAUSE_DEPEND_SOURCE:
case OMP_CLAUSE_DEPEND_SINK:
- /* FIXME: */
- break;
+ /* FALLTHRU */
default:
gcc_unreachable ();
}
--- gcc/tree-pretty-print.c.jj 2015-09-03 16:35:58.000000000 +0200
+++ gcc/tree-pretty-print.c 2015-09-25 15:04:46.911844111 +0200
@@ -569,7 +569,9 @@ dump_omp_clause (pretty_printer *pp, tre
if (TREE_PURPOSE (t) != integer_zero_node)
{
tree p = TREE_PURPOSE (t);
- if (!wi::neg_p (p, TYPE_SIGN (TREE_TYPE (p))))
+ if (OMP_CLAUSE_DEPEND_SINK_NEGATIVE (t))
+ pp_minus (pp);
+ else
pp_plus (pp);
dump_generic_node (pp, TREE_PURPOSE (t), spc, flags,
false);
--- gcc/c/c-parser.c.jj 2015-09-10 10:45:20.000000000 +0200
+++ gcc/c/c-parser.c 2015-09-25 14:47:20.501151011 +0200
@@ -11913,14 +11913,13 @@ c_parser_omp_clause_depend_sink (c_parse
c_parser_consume_token (parser);
- bool neg;
+ bool neg = false;
if (c_parser_next_token_is (parser, CPP_MINUS))
neg = true;
- else if (c_parser_next_token_is (parser, CPP_PLUS))
- neg = false;
- else
+ else if (!c_parser_next_token_is (parser, CPP_PLUS))
{
addend = integer_zero_node;
+ neg = false;
goto add_to_vector;
}
c_parser_consume_token (parser);
@@ -11937,21 +11936,15 @@ c_parser_omp_clause_depend_sink (c_parse
c_parser_error (parser, "expected integer");
return list;
}
- if (neg)
- {
- bool overflow;
- wide_int offset = wi::neg (addend, &overflow);
- addend = wide_int_to_tree (TREE_TYPE (addend), offset);
- if (overflow)
- warning_at (c_parser_peek_token (parser)->location,
- OPT_Woverflow,
- "overflow in implicit constant conversion");
- }
c_parser_consume_token (parser);
add_to_vector:
if (t != error_mark_node)
- vec = tree_cons (addend, t, vec);
+ {
+ vec = tree_cons (addend, t, vec);
+ if (neg)
+ OMP_CLAUSE_DEPEND_SINK_NEGATIVE (vec) = 1;
+ }
if (c_parser_next_token_is_not (parser, CPP_COMMA))
break;
@@ -13645,6 +13638,7 @@ c_parser_omp_for_loop (location_t loc, c
tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl;
tree declv, condv, incrv, initv, ret = NULL_TREE;
tree pre_body = NULL_TREE, this_pre_body;
+ tree ordered_cl = NULL_TREE;
bool fail = false, open_brace_parsed = false;
int i, collapse = 1, ordered = 0, count, nbraces = 0;
location_t for_loc;
@@ -13655,10 +13649,22 @@ c_parser_omp_for_loop (location_t loc, c
collapse = tree_to_shwi (OMP_CLAUSE_COLLAPSE_EXPR (cl));
else if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_ORDERED
&& OMP_CLAUSE_ORDERED_EXPR (cl))
- ordered = tree_to_shwi (OMP_CLAUSE_ORDERED_EXPR (cl));
+ {
+ ordered_cl = cl;
+ ordered = tree_to_shwi (OMP_CLAUSE_ORDERED_EXPR (cl));
+ }
+
+ if (ordered && ordered < collapse)
+ {
+ error_at (OMP_CLAUSE_LOCATION (ordered_cl),
+ "%<ordered%> clause parameter is less than %<collapse%>");
+ OMP_CLAUSE_ORDERED_EXPR (ordered_cl)
+ = build_int_cst (NULL_TREE, collapse);
+ ordered = collapse;
+ }
gcc_assert (collapse >= 1 && ordered >= 0);
- count = collapse + (ordered > 0 ? ordered - 1 : 0);
+ count = ordered ? ordered : collapse;
declv = make_tree_vec (count);
initv = make_tree_vec (count);
--- gcc/cp/parser.c.jj 2015-09-10 12:03:29.000000000 +0200
+++ gcc/cp/parser.c 2015-09-25 14:47:29.098025038 +0200
@@ -30464,12 +30464,10 @@ cp_parser_omp_clause_depend_sink (cp_par
id_loc);
}
- bool neg;
+ bool neg = false;
if (cp_lexer_next_token_is (parser->lexer, CPP_MINUS))
neg = true;
- else if (cp_lexer_next_token_is (parser->lexer, CPP_PLUS))
- neg = false;
- else
+ else if (!cp_lexer_next_token_is (parser->lexer, CPP_PLUS))
{
addend = integer_zero_node;
goto add_to_vector;
@@ -30488,21 +30486,15 @@ cp_parser_omp_clause_depend_sink (cp_par
cp_parser_error (parser, "expected integer");
return list;
}
- if (neg)
- {
- bool overflow;
- wide_int offset = wi::neg (addend, &overflow);
- addend = wide_int_to_tree (TREE_TYPE (addend), offset);
- if (overflow)
- warning_at (cp_lexer_peek_token (parser->lexer)->location,
- OPT_Woverflow,
- "overflow in implicit constant conversion");
- }
cp_lexer_consume_token (parser->lexer);
add_to_vector:
if (t != error_mark_node)
- vec = tree_cons (addend, t, vec);
+ {
+ vec = tree_cons (addend, t, vec);
+ if (neg)
+ OMP_CLAUSE_DEPEND_SINK_NEGATIVE (vec) = 1;
+ }
if (cp_lexer_next_token_is_not (parser->lexer, CPP_COMMA))
break;
@@ -32212,7 +32204,7 @@ cp_parser_omp_for_loop (cp_parser *parse
{
tree init, cond, incr, body, decl, pre_body = NULL_TREE, ret;
tree real_decl, initv, condv, incrv, declv;
- tree this_pre_body, cl;
+ tree this_pre_body, cl, ordered_cl = NULL_TREE;
location_t loc_first;
bool collapse_err = false;
int i, collapse = 1, ordered = 0, count, nbraces = 0;
@@ -32223,10 +32215,22 @@ cp_parser_omp_for_loop (cp_parser *parse
collapse = tree_to_shwi (OMP_CLAUSE_COLLAPSE_EXPR (cl));
else if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_ORDERED
&& OMP_CLAUSE_ORDERED_EXPR (cl))
- ordered = tree_to_shwi (OMP_CLAUSE_ORDERED_EXPR (cl));
+ {
+ ordered_cl = cl;
+ ordered = tree_to_shwi (OMP_CLAUSE_ORDERED_EXPR (cl));
+ }
+
+ if (ordered && ordered < collapse)
+ {
+ error_at (OMP_CLAUSE_LOCATION (ordered_cl),
+ "%<ordered%> clause parameter is less than %<collapse%>");
+ OMP_CLAUSE_ORDERED_EXPR (ordered_cl)
+ = build_int_cst (NULL_TREE, collapse);
+ ordered = collapse;
+ }
gcc_assert (collapse >= 1 && ordered >= 0);
- count = collapse + (ordered > 0 ? ordered - 1 : 0);
+ count = ordered ? ordered : collapse;
declv = make_tree_vec (count);
initv = make_tree_vec (count);
--- gcc/cp/pt.c.jj 2015-09-10 10:45:41.000000000 +0200
+++ gcc/cp/pt.c 2015-09-25 14:53:22.986839372 +0200
@@ -14086,7 +14086,10 @@ tsubst_omp_clause_decl (tree decl, tree
&& TREE_VALUE (decl) == length
&& TREE_CHAIN (decl) == chain)
return decl;
- return tree_cons (low_bound, length, chain);
+ tree ret = tree_cons (low_bound, length, chain);
+ OMP_CLAUSE_DEPEND_SINK_NEGATIVE (ret)
+ = OMP_CLAUSE_DEPEND_SINK_NEGATIVE (decl);
+ return ret;
}
tree ret = tsubst_expr (decl, args, complain, in_decl,
/*integral_constant_expression_p=*/false);
--- gcc/testsuite/c-c++-common/gomp/sink-1.c.jj 2015-07-15 13:00:32.000000000 +0200
+++ gcc/testsuite/c-c++-common/gomp/sink-1.c 2015-09-25 16:47:40.294063449 +0200
@@ -68,7 +68,7 @@ void
foo (int n, int m, int o)
{
int i, j, k;
- #pragma omp for collapse(2) ordered(2)
+ #pragma omp for collapse(2) ordered(3)
for (i = 0; i < m; i++)
{
for (j = 0; j < n; j++)
--- gcc/testsuite/gcc.dg/gomp/sink-fold-2.c.jj 2015-09-24 19:37:06.000000000 +0200
+++ gcc/testsuite/gcc.dg/gomp/sink-fold-2.c 2015-09-25 18:14:38.626071155 +0200
@@ -11,8 +11,8 @@ funk ()
for (i=0; i < N; i += 3)
for (j=0; j < N; ++j)
{
-#pragma omp ordered depend(sink:i-8,j-1) /* { dg-warning "ignoring sink clause with offset that is not a multiple" "" { xfail *-*-* } } */
-#pragma omp ordered depend(sink:i+3,j-1) /* { dg-error "first offset must be in opposite direction" "" { xfail *-*-* } } */
+#pragma omp ordered depend(sink:i-8,j-1) /* { dg-warning "refers to iteration never in the iteration space" } */
+#pragma omp ordered depend(sink:i+3,j-1) /* { dg-warning "waiting for lexically later iteration" } */
bar();
#pragma omp ordered depend(source)
}
--- libgomp/testsuite/libgomp.c/doacross-1.c.jj 2015-09-24 20:20:32.000000000 +0200
+++ libgomp/testsuite/libgomp.c/doacross-1.c 2015-09-25 16:54:47.118834681 +0200
@@ -79,7 +79,7 @@ main ()
#define D(n) C(n##0) C(n##1) C(n##2) C(n##3)
D(m)
#undef A
- #pragma omp for collapse (2) ordered(60) schedule(dynamic, 15)
+ #pragma omp for collapse (2) ordered(61) schedule(dynamic, 15)
for (i = 0; i < N / 32; i++)
for (j = 7; j > 1; j--)
for (k = 6; k >= 0; k -= 2)
@@ -119,7 +119,7 @@ main ()
c[i][j][k] = 3;
}
- #pragma omp for collapse(2) ordered(3) lastprivate (i, j, k)
+ #pragma omp for collapse(2) ordered(4) lastprivate (i, j, k)
for (i = 0; i < d + 1; i++)
for (j = d + 1; j >= 0; j--)
for (k = 0; k < d; k++)
@@ -136,7 +136,7 @@ main ()
abort ();
i = 8; j = 9; k = 10;
}
- #pragma omp for collapse(2) ordered(3) lastprivate (i, j, k, m)
+ #pragma omp for collapse(2) ordered(4) lastprivate (i, j, k, m)
for (i = 0; i < d + 1; i++)
for (j = d + 1; j >= 0; j--)
for (k = 0; k < d + 2; k++)
@@ -150,7 +150,7 @@ main ()
#pragma omp single
if (i != 1 || j != -1 || k != 2 || m != 0)
abort ();
- #pragma omp for collapse(2) ordered(3) nowait
+ #pragma omp for collapse(2) ordered(4) nowait
for (i = 0; i < d + 1; i++)
for (j = d; j > 0; j--)
for (k = 0; k < d + 2; k++)
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