* [committed] Implement OpenMP 5.0 lastprivate(conditional:) for #pragma omp for
@ 2019-05-24 21:34 Jakub Jelinek
0 siblings, 0 replies; only message in thread
From: Jakub Jelinek @ 2019-05-24 21:34 UTC (permalink / raw)
To: gcc-patches
Hi!
The following patch implements lastprivate clause with conditional modifier
for #pragma omp for (when not combined with parallel).
Next week I'll try to address combined parallel for, sections, simd and for
simd.
Bootstrapped/regtested on x86_64-linux and i686-linux, committed to trunk.
2019-05-24 Jakub Jelinek <jakub@redhat.com>
* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE__CONDTEMP_.
* tree.h (OMP_CLAUSE_DECL): Use OMP_CLAUSE__CONDTEMP_ instead of
OMP_CLAUSE__REDUCTEMP_.
* tree.c (omp_clause_num_ops, omp_clause_code_name): Add
OMP_CLAUSE__CONDTEMP_.
(walk_tree_1): Handle OMP_CLAUSE__CONDTEMP_.
* tree-pretty-print.c (dump_omp_clause): Likewise.
* tree-nested.c (convert_nonlocal_omp_clauses,
convert_local_omp_clauses): Likewise.
* gimplify.c (enum gimplify_omp_var_data): Use hexadecimal constants
instead of decimal. Add GOVD_LASTPRIVATE_CONDITIONAL.
(gimplify_scan_omp_clauses): Don't reject lastprivate conditional
on OMP_FOR.
(gimplify_omp_for): Warn and disable conditional modifier from
lastprivate on loop iterators.
* omp-general.h (struct omp_for_data): Add lastprivate_conditional
member.
* omp-general.c (omp_extract_for_data): Initialize it.
* omp-low.c (struct omp_context): Add lastprivate_conditional_map
member.
(delete_omp_context): Delete it.
(lower_lastprivate_conditional_clauses): New function.
(lower_lastprivate_clauses): Add BODY_P and CSTMT_LIST arguments,
handle lastprivate conditional clauses.
(lower_reduction_clauses): Add CLIST argument, emit it into
the critical section if any.
(lower_omp_sections): Adjust lower_lastprivate_clauses and
lower_reduction_clauses callers.
(lower_omp_for_lastprivate): Add CLIST argument, pass it through
to lower_lastprivate_clauses.
(lower_omp_for): Call lower_lastprivate_conditional_clauses, adjust
lower_omp_for_lastprivate and lower_reduction_clauses callers, emit
clist into a critical section if not emitted there already by
lower_reduction_clauses.
(lower_omp_taskreg, lower_omp_teams): Adjust lower_reduction_clauses
callers.
(lower_omp_1): Handle GIMPLE_ASSIGNs storing into lastprivate
conditional variables.
* omp-expand.c (determine_parallel_type): Punt if OMP_CLAUSE__CONDTEMP_
clause is present.
(expand_omp_for_generic, expand_omp_for_static_nochunk,
expand_omp_for_static_chunk): Handle lastprivate conditional.
(expand_omp_for): Handle fd.lastprivate_conditional like
fd.have_reductemp.
gcc/testsuite/
* c-c++-common/gomp/lastprivate-conditional-2.c (foo): Don't expect
sorry for omp for.
* c-c++-common/gomp/lastprivate-conditional-3.c: New test.
libgomp/
* testsuite/libgomp.c-c++-common/lastprivate-conditional-1.c: New test.
* testsuite/libgomp.c-c++-common/lastprivate-conditional-2.c: New test.
--- gcc/tree-core.h.jj 2019-05-24 10:54:49.447682115 +0200
+++ gcc/tree-core.h 2019-05-24 12:23:22.535364602 +0200
@@ -343,6 +343,9 @@ enum omp_clause_code {
/* Internal clause: temporary for task reductions. */
OMP_CLAUSE__REDUCTEMP_,
+ /* Internal clause: temporary for lastprivate(conditional:). */
+ OMP_CLAUSE__CONDTEMP_,
+
/* OpenACC/OpenMP clause: if (scalar-expression). */
OMP_CLAUSE_IF,
--- gcc/tree.h.jj 2019-05-24 10:54:49.781676629 +0200
+++ gcc/tree.h 2019-05-24 12:23:22.528364717 +0200
@@ -1439,7 +1439,7 @@ class auto_suppress_location_wrappers
#define OMP_CLAUSE_DECL(NODE) \
OMP_CLAUSE_OPERAND (OMP_CLAUSE_RANGE_CHECK (OMP_CLAUSE_CHECK (NODE), \
OMP_CLAUSE_PRIVATE, \
- OMP_CLAUSE__REDUCTEMP_), 0)
+ OMP_CLAUSE__CONDTEMP_), 0)
#define OMP_CLAUSE_HAS_LOCATION(NODE) \
(LOCATION_LOCUS ((OMP_CLAUSE_CHECK (NODE))->omp_clause.locus) \
!= UNKNOWN_LOCATION)
--- gcc/tree.c.jj 2019-05-24 10:54:49.734677400 +0200
+++ gcc/tree.c 2019-05-24 12:23:22.532364651 +0200
@@ -308,6 +308,7 @@ unsigned const char omp_clause_num_ops[]
0, /* OMP_CLAUSE_SEQ */
1, /* OMP_CLAUSE__LOOPTEMP_ */
1, /* OMP_CLAUSE__REDUCTEMP_ */
+ 1, /* OMP_CLAUSE__CONDTEMP_ */
1, /* OMP_CLAUSE_IF */
1, /* OMP_CLAUSE_NUM_THREADS */
1, /* OMP_CLAUSE_SCHEDULE */
@@ -385,6 +386,7 @@ const char * const omp_clause_code_name[
"seq",
"_looptemp_",
"_reductemp_",
+ "_condtemp_",
"if",
"num_threads",
"schedule",
@@ -12304,6 +12306,7 @@ walk_tree_1 (tree *tp, walk_tree_fn func
case OMP_CLAUSE_IS_DEVICE_PTR:
case OMP_CLAUSE__LOOPTEMP_:
case OMP_CLAUSE__REDUCTEMP_:
+ case OMP_CLAUSE__CONDTEMP_:
case OMP_CLAUSE__SIMDUID_:
WALK_SUBTREE (OMP_CLAUSE_OPERAND (*tp, 0));
/* FALLTHRU */
--- gcc/tree-pretty-print.c.jj 2019-05-24 10:54:49.507681129 +0200
+++ gcc/tree-pretty-print.c 2019-05-24 12:23:22.529364700 +0200
@@ -466,6 +466,9 @@ dump_omp_clause (pretty_printer *pp, tre
case OMP_CLAUSE__REDUCTEMP_:
name = "_reductemp_";
goto print_remap;
+ case OMP_CLAUSE__CONDTEMP_:
+ name = "_condtemp_";
+ goto print_remap;
case OMP_CLAUSE_TO_DECLARE:
name = "to";
goto print_remap;
--- gcc/tree-nested.c.jj 2019-05-24 10:54:49.674678385 +0200
+++ gcc/tree-nested.c 2019-05-24 12:23:22.526364750 +0200
@@ -1369,6 +1369,7 @@ convert_nonlocal_omp_clauses (tree *pcla
function decomposition happens before that. */
case OMP_CLAUSE__LOOPTEMP_:
case OMP_CLAUSE__REDUCTEMP_:
+ case OMP_CLAUSE__CONDTEMP_:
case OMP_CLAUSE__SIMDUID_:
case OMP_CLAUSE__GRIDDIM_:
case OMP_CLAUSE__SIMT_:
@@ -2096,6 +2097,7 @@ convert_local_omp_clauses (tree *pclause
function decomposition happens before that. */
case OMP_CLAUSE__LOOPTEMP_:
case OMP_CLAUSE__REDUCTEMP_:
+ case OMP_CLAUSE__CONDTEMP_:
case OMP_CLAUSE__SIMDUID_:
case OMP_CLAUSE__GRIDDIM_:
case OMP_CLAUSE__SIMT_:
--- gcc/gimplify.c.jj 2019-05-24 10:54:49.396682952 +0200
+++ gcc/gimplify.c 2019-05-24 12:23:22.536364585 +0200
@@ -71,47 +71,50 @@ static hash_set<tree> *asan_poisoned_var
enum gimplify_omp_var_data
{
- GOVD_SEEN = 1,
- GOVD_EXPLICIT = 2,
- GOVD_SHARED = 4,
- GOVD_PRIVATE = 8,
- GOVD_FIRSTPRIVATE = 16,
- GOVD_LASTPRIVATE = 32,
- GOVD_REDUCTION = 64,
- GOVD_LOCAL = 128,
- GOVD_MAP = 256,
- GOVD_DEBUG_PRIVATE = 512,
- GOVD_PRIVATE_OUTER_REF = 1024,
- GOVD_LINEAR = 2048,
- GOVD_ALIGNED = 4096,
+ GOVD_SEEN = 0x000001,
+ GOVD_EXPLICIT = 0x000002,
+ GOVD_SHARED = 0x000004,
+ GOVD_PRIVATE = 0x000008,
+ GOVD_FIRSTPRIVATE = 0x000010,
+ GOVD_LASTPRIVATE = 0x000020,
+ GOVD_REDUCTION = 0x000040,
+ GOVD_LOCAL = 0x00080,
+ GOVD_MAP = 0x000100,
+ GOVD_DEBUG_PRIVATE = 0x000200,
+ GOVD_PRIVATE_OUTER_REF = 0x000400,
+ GOVD_LINEAR = 0x000800,
+ GOVD_ALIGNED = 0x001000,
/* Flag for GOVD_MAP: don't copy back. */
- GOVD_MAP_TO_ONLY = 8192,
+ GOVD_MAP_TO_ONLY = 0x002000,
/* Flag for GOVD_LINEAR or GOVD_LASTPRIVATE: no outer reference. */
- GOVD_LINEAR_LASTPRIVATE_NO_OUTER = 16384,
+ GOVD_LINEAR_LASTPRIVATE_NO_OUTER = 0x004000,
- GOVD_MAP_0LEN_ARRAY = 32768,
+ GOVD_MAP_0LEN_ARRAY = 0x008000,
/* Flag for GOVD_MAP, if it is always, to or always, tofrom mapping. */
- GOVD_MAP_ALWAYS_TO = 65536,
+ GOVD_MAP_ALWAYS_TO = 0x010000,
/* Flag for shared vars that are or might be stored to in the region. */
- GOVD_WRITTEN = 131072,
+ GOVD_WRITTEN = 0x020000,
/* Flag for GOVD_MAP, if it is a forced mapping. */
- GOVD_MAP_FORCE = 262144,
+ GOVD_MAP_FORCE = 0x040000,
/* Flag for GOVD_MAP: must be present already. */
- GOVD_MAP_FORCE_PRESENT = 524288,
+ GOVD_MAP_FORCE_PRESENT = 0x080000,
/* Flag for GOVD_MAP: only allocate. */
- GOVD_MAP_ALLOC_ONLY = 1048576,
+ GOVD_MAP_ALLOC_ONLY = 0x100000,
/* Flag for GOVD_MAP: only copy back. */
- GOVD_MAP_FROM_ONLY = 2097152,
+ GOVD_MAP_FROM_ONLY = 0x200000,
- GOVD_NONTEMPORAL = 4194304,
+ GOVD_NONTEMPORAL = 0x400000,
+
+ /* Flag for GOVD_LASTPRIVATE: conditional modifier. */
+ GOVD_LASTPRIVATE_CONDITIONAL = 0x800000,
GOVD_DATA_SHARE_CLASS = (GOVD_SHARED | GOVD_PRIVATE | GOVD_FIRSTPRIVATE
| GOVD_LASTPRIVATE | GOVD_REDUCTION | GOVD_LINEAR
@@ -8141,9 +8144,17 @@ gimplify_scan_omp_clauses (tree *list_p,
OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c) = 0;
}
if (OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c))
- sorry_at (OMP_CLAUSE_LOCATION (c),
- "%<conditional%> modifier on %<lastprivate%> clause "
- "not supported yet");
+ {
+ if (code == OMP_FOR)
+ flags |= GOVD_LASTPRIVATE_CONDITIONAL;
+ else
+ {
+ sorry_at (OMP_CLAUSE_LOCATION (c),
+ "%<conditional%> modifier on %<lastprivate%> "
+ "clause not supported yet");
+ OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c) = 0;
+ }
+ }
if (outer_ctx
&& (outer_ctx->region_type == ORT_COMBINED_PARALLEL
|| ((outer_ctx->region_type & ORT_COMBINED_TEAMS)
@@ -10772,7 +10783,22 @@ gimplify_omp_for (tree *expr_p, gimple_s
1 + (TREE_VEC_LENGTH (OMP_FOR_INIT (for_stmt))
!= 1));
if (n != NULL && (n->value & GOVD_DATA_SHARE_CLASS) != 0)
- omp_notice_variable (gimplify_omp_ctxp, decl, true);
+ {
+ omp_notice_variable (gimplify_omp_ctxp, decl, true);
+ if (n->value & GOVD_LASTPRIVATE_CONDITIONAL)
+ for (tree c3 = omp_find_clause (OMP_FOR_CLAUSES (for_stmt),
+ OMP_CLAUSE_LASTPRIVATE);
+ c3; c3 = omp_find_clause (OMP_CLAUSE_CHAIN (c3),
+ OMP_CLAUSE_LASTPRIVATE))
+ if (OMP_CLAUSE_DECL (c3) == decl)
+ {
+ warning_at (OMP_CLAUSE_LOCATION (c3), 0,
+ "conditional %<lastprivate%> on loop "
+ "iterator %qD ignored", decl);
+ OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c3) = 0;
+ n->value &= ~GOVD_LASTPRIVATE_CONDITIONAL;
+ }
+ }
else if (TREE_VEC_LENGTH (OMP_FOR_INIT (for_stmt)) == 1)
{
c = build_omp_clause (input_location, OMP_CLAUSE_LINEAR);
@@ -11007,7 +11033,24 @@ gimplify_omp_for (tree *expr_p, gimple_s
}
}
else if (omp_is_private (gimplify_omp_ctxp, decl, 0))
- omp_notice_variable (gimplify_omp_ctxp, decl, true);
+ {
+ omp_notice_variable (gimplify_omp_ctxp, decl, true);
+ splay_tree_node n = splay_tree_lookup (gimplify_omp_ctxp->variables,
+ (splay_tree_key) decl);
+ if (n && (n->value & GOVD_LASTPRIVATE_CONDITIONAL))
+ for (tree c3 = omp_find_clause (OMP_FOR_CLAUSES (for_stmt),
+ OMP_CLAUSE_LASTPRIVATE);
+ c3; c3 = omp_find_clause (OMP_CLAUSE_CHAIN (c3),
+ OMP_CLAUSE_LASTPRIVATE))
+ if (OMP_CLAUSE_DECL (c3) == decl)
+ {
+ warning_at (OMP_CLAUSE_LOCATION (c3), 0,
+ "conditional %<lastprivate%> on loop "
+ "iterator %qD ignored", decl);
+ OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c3) = 0;
+ n->value &= ~GOVD_LASTPRIVATE_CONDITIONAL;
+ }
+ }
else
omp_add_variable (gimplify_omp_ctxp, decl, GOVD_PRIVATE | GOVD_SEEN);
--- gcc/omp-general.h.jj 2019-05-24 10:54:49.613679387 +0200
+++ gcc/omp-general.h 2019-05-24 12:23:22.529364700 +0200
@@ -63,6 +63,7 @@ struct omp_for_data
int collapse; /* Collapsed loops, 1 for a non-collapsed loop. */
int ordered;
bool have_nowait, have_ordered, simd_schedule, have_reductemp;
+ int lastprivate_conditional;
unsigned char sched_modifiers;
enum omp_clause_schedule_kind sched_kind;
struct omp_for_data_loop *loops;
--- gcc/omp-general.c.jj 2019-05-24 10:54:49.562680225 +0200
+++ gcc/omp-general.c 2019-05-24 12:23:22.537364569 +0200
@@ -168,6 +168,7 @@ omp_extract_for_data (gomp_for *for_stmt
fd->have_nowait = distribute || simd;
fd->have_ordered = false;
fd->have_reductemp = false;
+ fd->lastprivate_conditional = 0;
fd->tiling = NULL_TREE;
fd->collapse = 1;
fd->ordered = 0;
@@ -220,6 +221,11 @@ omp_extract_for_data (gomp_for *for_stmt
break;
case OMP_CLAUSE__REDUCTEMP_:
fd->have_reductemp = true;
+ break;
+ case OMP_CLAUSE_LASTPRIVATE:
+ if (OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (t))
+ fd->lastprivate_conditional++;
+ break;
default:
break;
}
--- gcc/omp-low.c.jj 2019-05-24 10:54:49.962673655 +0200
+++ gcc/omp-low.c 2019-05-24 14:38:23.909551251 +0200
@@ -119,10 +119,14 @@ struct omp_context
and then offsets (if constant, otherwise NULL) for each entry. */
vec<tree> task_reductions;
- /* And a hash map from the reduction clauses to the registered array
+ /* A hash map from the reduction clauses to the registered array
elts. */
hash_map<tree, unsigned> *task_reduction_map;
+ /* And a hash map from the lastprivate(conditional:) variables to their
+ corresponding tracking loop iteration variables. */
+ hash_map<tree, tree> *lastprivate_conditional_map;
+
/* Nesting depth of this context. Used to beautify error messages re
invalid gotos. The outermost ctx is depth 1, with depth 0 being
reserved for the main body of the function. */
@@ -955,6 +959,8 @@ delete_omp_context (splay_tree_value val
delete ctx->task_reduction_map;
}
+ delete ctx->lastprivate_conditional_map;
+
XDELETE (ctx);
}
@@ -5358,18 +5364,72 @@ lower_rec_input_clauses (tree clauses, g
}
}
+/* Create temporary variables for lastprivate(conditional:) implementation
+ in context CTX with CLAUSES. */
+
+static void
+lower_lastprivate_conditional_clauses (tree *clauses, omp_context *ctx)
+{
+ struct omp_for_data fd;
+ tree iter_type = NULL_TREE;
+ tree cond_ptr = NULL_TREE;
+ tree iter_var = NULL_TREE;
+ for (tree c = *clauses; c; c = OMP_CLAUSE_CHAIN (c))
+ if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE
+ && OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c))
+ {
+ if (iter_type == NULL)
+ {
+ omp_extract_for_data (as_a <gomp_for *> (ctx->stmt), &fd, NULL);
+ iter_type = unsigned_type_for (fd.iter_type);
+ cond_ptr = create_tmp_var_raw (build_pointer_type (iter_type));
+ DECL_CONTEXT (cond_ptr) = current_function_decl;
+ DECL_SEEN_IN_BIND_EXPR_P (cond_ptr) = 1;
+ DECL_CHAIN (cond_ptr) = ctx->block_vars;
+ ctx->block_vars = cond_ptr;
+ iter_var = create_tmp_var_raw (iter_type);
+ DECL_CONTEXT (iter_var) = current_function_decl;
+ DECL_SEEN_IN_BIND_EXPR_P (iter_var) = 1;
+ DECL_CHAIN (iter_var) = ctx->block_vars;
+ ctx->block_vars = iter_var;
+ tree c2
+ = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE__CONDTEMP_);
+ tree c3
+ = build_omp_clause (UNKNOWN_LOCATION, OMP_CLAUSE__CONDTEMP_);
+ OMP_CLAUSE_DECL (c2) = cond_ptr;
+ OMP_CLAUSE_DECL (c3) = iter_var;
+ OMP_CLAUSE_CHAIN (c2) = c3;
+ OMP_CLAUSE_CHAIN (c3) = *clauses;
+ *clauses = c2;
+ ctx->lastprivate_conditional_map = new hash_map<tree, tree>;
+ }
+ tree v = create_tmp_var_raw (iter_type);
+ DECL_CONTEXT (v) = current_function_decl;
+ DECL_SEEN_IN_BIND_EXPR_P (v) = 1;
+ DECL_CHAIN (v) = ctx->block_vars;
+ ctx->block_vars = v;
+ tree o = lookup_decl (OMP_CLAUSE_DECL (c), ctx);
+ ctx->lastprivate_conditional_map->put (o, v);
+ }
+}
+
/* Generate code to implement the LASTPRIVATE clauses. This is used for
both parallel and workshare constructs. PREDICATE may be NULL if it's
- always true. */
+ always true. BODY_P is the sequence to insert early initialization
+ if needed, STMT_LIST is where the non-conditional lastprivate handling
+ goes into and CSTMT_LIST is a sequence that needs to be run in a critical
+ section. */
static void
-lower_lastprivate_clauses (tree clauses, tree predicate, gimple_seq *stmt_list,
+lower_lastprivate_clauses (tree clauses, tree predicate, gimple_seq *body_p,
+ gimple_seq *stmt_list, gimple_seq *cstmt_list,
omp_context *ctx)
{
tree x, c, label = NULL, orig_clauses = clauses;
bool par_clauses = false;
tree simduid = NULL, lastlane = NULL, simtcond = NULL, simtlast = NULL;
+ unsigned HOST_WIDE_INT conditional_off = 0;
/* Early exit if there are no lastprivate or linear clauses. */
for (; clauses ; clauses = OMP_CLAUSE_CHAIN (clauses))
@@ -5448,10 +5508,43 @@ lower_lastprivate_clauses (tree clauses,
gimple_seq_add_stmt (stmt_list, gimple_build_label (label_true));
}
+ tree cond_ptr = NULL_TREE;
for (c = clauses; c ;)
{
tree var, new_var;
location_t clause_loc = OMP_CLAUSE_LOCATION (c);
+ gimple_seq *this_stmt_list = stmt_list;
+ tree lab2 = NULL_TREE;
+
+ if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE
+ && OMP_CLAUSE_LASTPRIVATE_CONDITIONAL (c))
+ {
+ gcc_assert (body_p && ctx->lastprivate_conditional_map);
+ if (cond_ptr == NULL_TREE)
+ {
+ cond_ptr = omp_find_clause (orig_clauses, OMP_CLAUSE__CONDTEMP_);
+ cond_ptr = OMP_CLAUSE_DECL (cond_ptr);
+ }
+ tree type = TREE_TYPE (TREE_TYPE (cond_ptr));
+ tree o = lookup_decl (OMP_CLAUSE_DECL (c), ctx);
+ tree v = *ctx->lastprivate_conditional_map->get (o);
+ gimplify_assign (v, build_zero_cst (type), body_p);
+ this_stmt_list = cstmt_list;
+ tree mem = build2 (MEM_REF, type, cond_ptr,
+ build_int_cst (TREE_TYPE (cond_ptr),
+ conditional_off));
+ tree mem2 = copy_node (mem);
+ conditional_off += tree_to_uhwi (TYPE_SIZE_UNIT (type));
+ gimple_seq seq = NULL;
+ mem = force_gimple_operand (mem, &seq, true, NULL_TREE);
+ gimple_seq_add_seq (this_stmt_list, seq);
+ tree lab1 = create_artificial_label (UNKNOWN_LOCATION);
+ lab2 = create_artificial_label (UNKNOWN_LOCATION);
+ gimple *g = gimple_build_cond (GT_EXPR, v, mem, lab1, lab2);
+ gimple_seq_add_stmt (this_stmt_list, g);
+ gimple_seq_add_stmt (this_stmt_list, gimple_build_label (lab1));
+ gimplify_assign (mem2, v, this_stmt_list);
+ }
if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE
|| (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LINEAR
@@ -5493,7 +5586,7 @@ lower_lastprivate_clauses (tree clauses,
2, simduid,
TREE_OPERAND (val, 1));
gimple_call_set_lhs (g, lastlane);
- gimple_seq_add_stmt (stmt_list, g);
+ gimple_seq_add_stmt (this_stmt_list, g);
}
new_var = build4 (ARRAY_REF, TREE_TYPE (val),
TREE_OPERAND (val, 0), lastlane,
@@ -5511,13 +5604,13 @@ lower_lastprivate_clauses (tree clauses,
gcall *g = gimple_build_call_internal
(IFN_GOMP_SIMT_LAST_LANE, 1, simtcond);
gimple_call_set_lhs (g, simtlast);
- gimple_seq_add_stmt (stmt_list, g);
+ gimple_seq_add_stmt (this_stmt_list, g);
}
x = build_call_expr_internal_loc
(UNKNOWN_LOCATION, IFN_GOMP_SIMT_XCHG_IDX,
TREE_TYPE (val), 2, val, simtlast);
new_var = unshare_expr (new_var);
- gimplify_assign (new_var, x, stmt_list);
+ gimplify_assign (new_var, x, this_stmt_list);
new_var = unshare_expr (new_var);
}
@@ -5525,7 +5618,7 @@ lower_lastprivate_clauses (tree clauses,
&& OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c))
{
lower_omp (&OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c), ctx);
- gimple_seq_add_seq (stmt_list,
+ gimple_seq_add_seq (this_stmt_list,
OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c));
OMP_CLAUSE_LASTPRIVATE_GIMPLE_SEQ (c) = NULL;
}
@@ -5533,7 +5626,7 @@ lower_lastprivate_clauses (tree clauses,
&& OMP_CLAUSE_LINEAR_GIMPLE_SEQ (c))
{
lower_omp (&OMP_CLAUSE_LINEAR_GIMPLE_SEQ (c), ctx);
- gimple_seq_add_seq (stmt_list,
+ gimple_seq_add_seq (this_stmt_list,
OMP_CLAUSE_LINEAR_GIMPLE_SEQ (c));
OMP_CLAUSE_LINEAR_GIMPLE_SEQ (c) = NULL;
}
@@ -5553,8 +5646,12 @@ lower_lastprivate_clauses (tree clauses,
if (omp_is_reference (var))
new_var = build_simple_mem_ref_loc (clause_loc, new_var);
x = lang_hooks.decls.omp_clause_assign_op (c, x, new_var);
- gimplify_and_add (x, stmt_list);
+ gimplify_and_add (x, this_stmt_list);
+
+ if (lab2)
+ gimple_seq_add_stmt (this_stmt_list, gimple_build_label (lab2));
}
+
c = OMP_CLAUSE_CHAIN (c);
if (c == NULL && !par_clauses)
{
@@ -5802,10 +5899,15 @@ lower_oacc_reductions (location_t loc, t
gimple_seq_add_seq (join_seq, after_join);
}
-/* Generate code to implement the REDUCTION clauses. */
+/* Generate code to implement the REDUCTION clauses, append it
+ to STMT_SEQP. CLIST if non-NULL is a pointer to a sequence
+ that should be emitted also inside of the critical section,
+ in that case clear *CLIST afterwards, otherwise leave it as is
+ and let the caller emit it itself. */
static void
-lower_reduction_clauses (tree clauses, gimple_seq *stmt_seqp, omp_context *ctx)
+lower_reduction_clauses (tree clauses, gimple_seq *stmt_seqp,
+ gimple_seq *clist, omp_context *ctx)
{
gimple_seq sub_seq = NULL;
gimple *stmt;
@@ -6047,6 +6149,12 @@ lower_reduction_clauses (tree clauses, g
gimple_seq_add_seq (stmt_seqp, sub_seq);
+ if (clist)
+ {
+ gimple_seq_add_seq (stmt_seqp, *clist);
+ *clist = NULL;
+ }
+
stmt = gimple_build_call (builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_END),
0);
gimple_seq_add_stmt (stmt_seqp, stmt);
@@ -6684,7 +6792,7 @@ lower_omp_sections (gimple_stmt_iterator
{
gimple_seq l = NULL;
lower_lastprivate_clauses (gimple_omp_sections_clauses (stmt), NULL,
- &l, ctx);
+ NULL, &l, NULL, ctx);
gsi_insert_seq_after (&tgsi, l, GSI_CONTINUE_LINKING);
gimple_omp_section_set_last (sec_start);
}
@@ -6697,7 +6805,8 @@ lower_omp_sections (gimple_stmt_iterator
bind = gimple_build_bind (NULL, new_body, block);
olist = NULL;
- lower_reduction_clauses (gimple_omp_sections_clauses (stmt), &olist, ctx);
+ lower_reduction_clauses (gimple_omp_sections_clauses (stmt), &olist,
+ NULL, ctx);
block = make_node (BLOCK);
new_stmt = gimple_build_bind (NULL, NULL, block);
@@ -8074,11 +8183,13 @@ lower_omp_critical (gimple_stmt_iterator
for a lastprivate clause. Given a loop control predicate of (V
cond N2), we gate the clause on (!(V cond N2)). The lowered form
is appended to *DLIST, iterator initialization is appended to
- *BODY_P. */
+ *BODY_P. *CLIST is for lastprivate(conditional:) code that needs
+ to be emitted in a critical section. */
static void
lower_omp_for_lastprivate (struct omp_for_data *fd, gimple_seq *body_p,
- gimple_seq *dlist, struct omp_context *ctx)
+ gimple_seq *dlist, gimple_seq *clist,
+ struct omp_context *ctx)
{
tree clauses, cond, vinit;
enum tree_code cond_code;
@@ -8158,7 +8269,7 @@ lower_omp_for_lastprivate (struct omp_fo
clauses = gimple_omp_for_clauses (fd->for_stmt);
stmts = NULL;
- lower_lastprivate_clauses (clauses, cond, &stmts, ctx);
+ lower_lastprivate_clauses (clauses, cond, body_p, &stmts, clist, ctx);
if (!gimple_seq_empty_p (stmts))
{
gimple_seq_add_seq (&stmts, *dlist);
@@ -8190,7 +8301,7 @@ lower_omp_for (gimple_stmt_iterator *gsi
gomp_for *stmt = as_a <gomp_for *> (gsi_stmt (*gsi_p));
gbind *new_stmt;
gimple_seq omp_for_body, body, dlist, tred_ilist = NULL, tred_dlist = NULL;
- gimple_seq cnt_list = NULL;
+ gimple_seq cnt_list = NULL, clist = NULL;
gimple_seq oacc_head = NULL, oacc_tail = NULL;
size_t i;
@@ -8308,6 +8419,9 @@ lower_omp_for (gimple_stmt_iterator *gsi
gimple_seq_add_seq (rclauses ? &tred_ilist : &body,
gimple_omp_for_pre_body (stmt));
+ lower_lastprivate_conditional_clauses (gimple_omp_for_clauses_ptr (stmt),
+ ctx);
+
lower_omp (gimple_omp_body_ptr (stmt), ctx);
/* Lower the header expressions. At this point, we can assume that
@@ -8353,7 +8467,7 @@ lower_omp_for (gimple_stmt_iterator *gsi
if (oacc_head)
gimple_seq_add_seq (&body, oacc_head);
- lower_omp_for_lastprivate (&fd, &body, &dlist, ctx);
+ lower_omp_for_lastprivate (&fd, &body, &dlist, &clist, ctx);
if (gimple_omp_for_kind (stmt) == GF_OMP_FOR_KIND_FOR)
for (tree c = gimple_omp_for_clauses (stmt); c; c = OMP_CLAUSE_CHAIN (c))
@@ -8378,13 +8492,24 @@ lower_omp_for (gimple_stmt_iterator *gsi
fd.loop.v));
/* After the loop, add exit clauses. */
- lower_reduction_clauses (gimple_omp_for_clauses (stmt), &body, ctx);
+ lower_reduction_clauses (gimple_omp_for_clauses (stmt), &body, &clist, ctx);
+
+ if (clist)
+ {
+ tree fndecl = builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_START);
+ gcall *g = gimple_build_call (fndecl, 0);
+ gimple_seq_add_stmt (&body, g);
+ gimple_seq_add_seq (&body, clist);
+ fndecl = builtin_decl_explicit (BUILT_IN_GOMP_ATOMIC_END);
+ g = gimple_build_call (fndecl, 0);
+ gimple_seq_add_stmt (&body, g);
+ }
if (ctx->cancellable)
gimple_seq_add_stmt (&body, gimple_build_label (ctx->cancel_label));
gimple_seq_add_seq (&body, dlist);
-
+
if (rclauses)
{
gimple_seq_add_seq (&tred_ilist, body);
@@ -9000,7 +9124,7 @@ lower_omp_taskreg (gimple_stmt_iterator
lower_rec_input_clauses (clauses, &par_ilist, &par_olist, ctx, NULL);
lower_omp (&par_body, ctx);
if (gimple_code (stmt) == GIMPLE_OMP_PARALLEL)
- lower_reduction_clauses (clauses, &par_rlist, ctx);
+ lower_reduction_clauses (clauses, &par_rlist, NULL, ctx);
/* Declare all the variables created by mapping and the variables
declared in the scope of the parallel body. */
@@ -10189,7 +10313,8 @@ lower_omp_teams (gimple_stmt_iterator *g
lower_rec_input_clauses (gimple_omp_teams_clauses (teams_stmt),
&bind_body, &dlist, ctx, NULL);
lower_omp (gimple_omp_body_ptr (teams_stmt), ctx);
- lower_reduction_clauses (gimple_omp_teams_clauses (teams_stmt), &olist, ctx);
+ lower_reduction_clauses (gimple_omp_teams_clauses (teams_stmt), &olist,
+ NULL, ctx);
if (!gimple_omp_teams_grid_phony (teams_stmt))
{
gimple_seq_add_stmt (&bind_body, teams_stmt);
@@ -10498,8 +10623,28 @@ lower_omp_1 (gimple_stmt_iterator *gsi_p
default:
break;
}
+ goto regimplify;
+
+ case GIMPLE_ASSIGN:
+ if (ctx && ctx->lastprivate_conditional_map)
+ {
+ tree lhs = get_base_address (gimple_assign_lhs (stmt));
+ if (DECL_P (lhs))
+ if (tree *v = ctx->lastprivate_conditional_map->get (lhs))
+ {
+ tree clauses
+ = gimple_omp_for_clauses (as_a <gomp_for *> (ctx->stmt));
+ tree c = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_);
+ c = omp_find_clause (OMP_CLAUSE_CHAIN (c),
+ OMP_CLAUSE__CONDTEMP_);
+ gimple *g = gimple_build_assign (*v, OMP_CLAUSE_DECL (c));
+ gsi_insert_after (gsi_p, g, GSI_SAME_STMT);
+ }
+ }
/* FALLTHRU */
+
default:
+ regimplify:
if ((ctx || task_shared_vars)
&& walk_gimple_op (stmt, lower_omp_regimplify_p,
ctx ? NULL : &wi))
--- gcc/omp-expand.c.jj 2019-05-24 10:54:49.498681277 +0200
+++ gcc/omp-expand.c 2019-05-24 19:56:35.527290123 +0200
@@ -345,7 +345,8 @@ determine_parallel_type (struct omp_regi
|| ((OMP_CLAUSE_SCHEDULE_KIND (c) & OMP_CLAUSE_SCHEDULE_MASK)
== OMP_CLAUSE_SCHEDULE_STATIC)
|| omp_find_clause (clauses, OMP_CLAUSE_ORDERED)
- || omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_))
+ || omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_)
+ || omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_))
return;
}
else if (region->inner->type == GIMPLE_OMP_SECTIONS
@@ -2679,16 +2680,17 @@ expand_omp_for_generic (struct omp_regio
gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR);
if (fd->ordered
- && omp_find_clause (gimple_omp_for_clauses (gsi_stmt (gsi)),
+ && omp_find_clause (gimple_omp_for_clauses (fd->for_stmt),
OMP_CLAUSE_LASTPRIVATE))
ordered_lastprivate = false;
tree reductions = NULL_TREE;
- tree mem = NULL_TREE;
+ tree mem = NULL_TREE, cond_var = NULL_TREE, condtemp = NULL_TREE;
+ tree memv = NULL_TREE;
if (sched_arg)
{
if (fd->have_reductemp)
{
- tree c = omp_find_clause (gimple_omp_for_clauses (gsi_stmt (gsi)),
+ tree c = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt),
OMP_CLAUSE__REDUCTEMP_);
reductions = OMP_CLAUSE_DECL (c);
gcc_assert (TREE_CODE (reductions) == SSA_NAME);
@@ -2703,8 +2705,25 @@ expand_omp_for_generic (struct omp_regio
}
else
reductions = null_pointer_node;
- /* For now. */
- mem = null_pointer_node;
+ if (fd->lastprivate_conditional)
+ {
+ tree c = omp_find_clause (gimple_omp_for_clauses (fd->for_stmt),
+ OMP_CLAUSE__CONDTEMP_);
+ condtemp = OMP_CLAUSE_DECL (c);
+ c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE__CONDTEMP_);
+ cond_var = OMP_CLAUSE_DECL (c);
+ tree type = TREE_TYPE (condtemp);
+ memv = create_tmp_var (type);
+ TREE_ADDRESSABLE (memv) = 1;
+ unsigned HOST_WIDE_INT sz
+ = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type)));
+ sz *= fd->lastprivate_conditional;
+ expand_omp_build_assign (&gsi, memv, build_int_cst (type, sz),
+ false);
+ mem = build_fold_addr_expr (memv);
+ }
+ else
+ mem = null_pointer_node;
}
if (fd->collapse > 1 || fd->ordered)
{
@@ -2959,6 +2978,8 @@ expand_omp_for_generic (struct omp_regio
gsi_insert_before (&gsi, gimple_build_assign (arr, clobber),
GSI_SAME_STMT);
}
+ if (fd->lastprivate_conditional)
+ expand_omp_build_assign (&gsi, condtemp, memv, false);
if (fd->have_reductemp)
{
gimple *g = gsi_stmt (gsi);
@@ -3029,6 +3050,35 @@ expand_omp_for_generic (struct omp_regio
NULL_TREE, false, GSI_CONTINUE_LINKING);
assign_stmt = gimple_build_assign (startvar, t);
gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING);
+ if (cond_var)
+ {
+ tree itype = TREE_TYPE (cond_var);
+ /* For lastprivate(conditional:) itervar, we need some iteration
+ counter that starts at unsigned non-zero and increases.
+ Prefer as few IVs as possible, so if we can use startvar
+ itself, use that, or startvar + constant (those would be
+ incremented with step), and as last resort use the s0 + 1
+ incremented by 1. */
+ if ((fd->ordered && fd->collapse == 1)
+ || bias
+ || POINTER_TYPE_P (type)
+ || TREE_CODE (fd->loop.n1) != INTEGER_CST
+ || fd->loop.cond_code != LT_EXPR)
+ t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, istart0),
+ build_int_cst (itype, 1));
+ else if (tree_int_cst_sgn (fd->loop.n1) == 1)
+ t = fold_convert (itype, t);
+ else
+ {
+ tree c = fold_convert (itype, fd->loop.n1);
+ c = fold_build2 (MINUS_EXPR, itype, build_int_cst (itype, 1), c);
+ t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, t), c);
+ }
+ t = force_gimple_operand_gsi (&gsi, t, false,
+ NULL_TREE, false, GSI_CONTINUE_LINKING);
+ assign_stmt = gimple_build_assign (cond_var, t);
+ gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING);
+ }
t = iend0;
if (fd->ordered && fd->collapse == 1)
@@ -3213,6 +3263,25 @@ expand_omp_for_generic (struct omp_regio
assign_stmt = gimple_build_assign (vback, t);
gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT);
+ if (cond_var)
+ {
+ tree itype = TREE_TYPE (cond_var);
+ tree t2;
+ if ((fd->ordered && fd->collapse == 1)
+ || bias
+ || POINTER_TYPE_P (type)
+ || TREE_CODE (fd->loop.n1) != INTEGER_CST
+ || fd->loop.cond_code != LT_EXPR)
+ t2 = build_int_cst (itype, 1);
+ else
+ t2 = fold_convert (itype, fd->loop.step);
+ t2 = fold_build2 (PLUS_EXPR, itype, cond_var, t2);
+ t2 = force_gimple_operand_gsi (&gsi, t2, false,
+ NULL_TREE, true, GSI_SAME_STMT);
+ assign_stmt = gimple_build_assign (cond_var, t2);
+ gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT);
+ }
+
if (fd->ordered && counts[fd->collapse - 1] == NULL_TREE)
{
tree tem;
@@ -3465,12 +3534,13 @@ expand_omp_for_static_nochunk (struct om
basic_block entry_bb, second_bb, third_bb, exit_bb, seq_start_bb;
basic_block body_bb, cont_bb, collapse_bb = NULL;
basic_block fin_bb;
- gimple_stmt_iterator gsi;
+ gimple_stmt_iterator gsi, gsip;
edge ep;
bool broken_loop = region->cont == NULL;
tree *counts = NULL;
tree n1, n2, step;
tree reductions = NULL_TREE;
+ tree cond_var = NULL_TREE;
itype = type = TREE_TYPE (fd->loop.v);
if (POINTER_TYPE_P (type))
@@ -3495,6 +3565,8 @@ expand_omp_for_static_nochunk (struct om
/* Iteration space partitioning goes in ENTRY_BB. */
gsi = gsi_last_nondebug_bb (entry_bb);
gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR);
+ gsip = gsi;
+ gsi_prev (&gsip);
if (fd->collapse > 1)
{
@@ -3524,7 +3596,7 @@ expand_omp_for_static_nochunk (struct om
n2 = force_gimple_operand_gsi (&gsi, n2, true, NULL_TREE,
true, GSI_SAME_STMT);
gcond *cond_stmt = gimple_build_cond (fd->loop.cond_code, n1, n2,
- NULL_TREE, NULL_TREE);
+ NULL_TREE, NULL_TREE);
gsi_insert_before (&gsi, cond_stmt, GSI_SAME_STMT);
if (walk_tree (gimple_cond_lhs_ptr (cond_stmt),
expand_omp_regimplify_p, NULL, NULL)
@@ -3554,28 +3626,64 @@ expand_omp_for_static_nochunk (struct om
gsi = gsi_last_bb (entry_bb);
}
- if (fd->have_reductemp)
+ if (fd->have_reductemp || fd->lastprivate_conditional)
{
tree t1 = build_int_cst (long_integer_type_node, 0);
tree t2 = build_int_cst (long_integer_type_node, 1);
tree t3 = build_int_cstu (long_integer_type_node,
(HOST_WIDE_INT_1U << 31) + 1);
tree clauses = gimple_omp_for_clauses (fd->for_stmt);
- clauses = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_);
- reductions = OMP_CLAUSE_DECL (clauses);
- gcc_assert (TREE_CODE (reductions) == SSA_NAME);
- gimple *g = SSA_NAME_DEF_STMT (reductions);
- reductions = gimple_assign_rhs1 (g);
- OMP_CLAUSE_DECL (clauses) = reductions;
- gimple_stmt_iterator gsi2 = gsi_for_stmt (g);
+ gimple_stmt_iterator gsi2 = gsi_none ();
+ gimple *g = NULL;
+ tree mem = null_pointer_node, memv = NULL_TREE;
+ tree condtemp = NULL_TREE;
+ if (fd->have_reductemp)
+ {
+ tree c = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_);
+ reductions = OMP_CLAUSE_DECL (c);
+ gcc_assert (TREE_CODE (reductions) == SSA_NAME);
+ g = SSA_NAME_DEF_STMT (reductions);
+ reductions = gimple_assign_rhs1 (g);
+ OMP_CLAUSE_DECL (c) = reductions;
+ gsi2 = gsi_for_stmt (g);
+ }
+ else
+ {
+ if (gsi_end_p (gsip))
+ gsi2 = gsi_after_labels (region->entry);
+ else
+ gsi2 = gsip;
+ reductions = null_pointer_node;
+ }
+ if (fd->lastprivate_conditional)
+ {
+ tree c = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_);
+ condtemp = OMP_CLAUSE_DECL (c);
+ c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE__CONDTEMP_);
+ cond_var = OMP_CLAUSE_DECL (c);
+ tree type = TREE_TYPE (condtemp);
+ memv = create_tmp_var (type);
+ TREE_ADDRESSABLE (memv) = 1;
+ unsigned HOST_WIDE_INT sz
+ = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type)));
+ sz *= fd->lastprivate_conditional;
+ expand_omp_build_assign (&gsi2, memv, build_int_cst (type, sz),
+ false);
+ mem = build_fold_addr_expr (memv);
+ }
tree t
= build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_LOOP_START),
9, t1, t2, t2, t3, t1, null_pointer_node,
- null_pointer_node, reductions, null_pointer_node);
+ null_pointer_node, reductions, mem);
force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE,
true, GSI_SAME_STMT);
- gsi_remove (&gsi2, true);
- release_ssa_name (gimple_assign_lhs (g));
+ if (fd->lastprivate_conditional)
+ expand_omp_build_assign (&gsi2, condtemp, memv, false);
+ if (fd->have_reductemp)
+ {
+ gsi_remove (&gsi2, true);
+ release_ssa_name (gimple_assign_lhs (g));
+ }
}
switch (gimple_omp_for_kind (fd->for_stmt))
{
@@ -3735,6 +3843,33 @@ expand_omp_for_static_nochunk (struct om
NULL_TREE, false, GSI_CONTINUE_LINKING);
assign_stmt = gimple_build_assign (startvar, t);
gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING);
+ if (cond_var)
+ {
+ tree itype = TREE_TYPE (cond_var);
+ /* For lastprivate(conditional:) itervar, we need some iteration
+ counter that starts at unsigned non-zero and increases.
+ Prefer as few IVs as possible, so if we can use startvar
+ itself, use that, or startvar + constant (those would be
+ incremented with step), and as last resort use the s0 + 1
+ incremented by 1. */
+ if (POINTER_TYPE_P (type)
+ || TREE_CODE (n1) != INTEGER_CST
+ || fd->loop.cond_code != LT_EXPR)
+ t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, s0),
+ build_int_cst (itype, 1));
+ else if (tree_int_cst_sgn (n1) == 1)
+ t = fold_convert (itype, t);
+ else
+ {
+ tree c = fold_convert (itype, n1);
+ c = fold_build2 (MINUS_EXPR, itype, build_int_cst (itype, 1), c);
+ t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, t), c);
+ }
+ t = force_gimple_operand_gsi (&gsi, t, false,
+ NULL_TREE, false, GSI_CONTINUE_LINKING);
+ assign_stmt = gimple_build_assign (cond_var, t);
+ gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING);
+ }
t = fold_convert (itype, e0);
t = fold_build2 (MULT_EXPR, itype, t, step);
@@ -3829,6 +3964,23 @@ expand_omp_for_static_nochunk (struct om
assign_stmt = gimple_build_assign (vback, t);
gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT);
+ if (cond_var)
+ {
+ tree itype = TREE_TYPE (cond_var);
+ tree t2;
+ if (POINTER_TYPE_P (type)
+ || TREE_CODE (n1) != INTEGER_CST
+ || fd->loop.cond_code != LT_EXPR)
+ t2 = build_int_cst (itype, 1);
+ else
+ t2 = fold_convert (itype, step);
+ t2 = fold_build2 (PLUS_EXPR, itype, cond_var, t2);
+ t2 = force_gimple_operand_gsi (&gsi, t2, false,
+ NULL_TREE, true, GSI_SAME_STMT);
+ assign_stmt = gimple_build_assign (cond_var, t2);
+ gsi_insert_before (&gsi, assign_stmt, GSI_SAME_STMT);
+ }
+
t = build2 (fd->loop.cond_code, boolean_type_node,
DECL_P (vback) && TREE_ADDRESSABLE (vback)
? t : vback, e);
@@ -3847,7 +3999,7 @@ expand_omp_for_static_nochunk (struct om
if (!gimple_omp_return_nowait_p (gsi_stmt (gsi)))
{
t = gimple_omp_return_lhs (gsi_stmt (gsi));
- if (fd->have_reductemp)
+ if (fd->have_reductemp || fd->lastprivate_conditional)
{
tree fn;
if (t)
@@ -3858,9 +4010,10 @@ expand_omp_for_static_nochunk (struct om
if (t)
{
gimple_call_set_lhs (g, t);
- gsi_insert_after (&gsi, gimple_build_assign (reductions,
- NOP_EXPR, t),
- GSI_SAME_STMT);
+ if (fd->have_reductemp)
+ gsi_insert_after (&gsi, gimple_build_assign (reductions,
+ NOP_EXPR, t),
+ GSI_SAME_STMT);
}
gsi_insert_after (&gsi, g, GSI_SAME_STMT);
}
@@ -3997,12 +4150,13 @@ expand_omp_for_static_chunk (struct omp_
tree type, itype, vmain, vback, vextra;
basic_block entry_bb, exit_bb, body_bb, seq_start_bb, iter_part_bb;
basic_block trip_update_bb = NULL, cont_bb, collapse_bb = NULL, fin_bb;
- gimple_stmt_iterator gsi;
+ gimple_stmt_iterator gsi, gsip;
edge se;
bool broken_loop = region->cont == NULL;
tree *counts = NULL;
tree n1, n2, step;
tree reductions = NULL_TREE;
+ tree cond_var = NULL_TREE;
itype = type = TREE_TYPE (fd->loop.v);
if (POINTER_TYPE_P (type))
@@ -4031,6 +4185,8 @@ expand_omp_for_static_chunk (struct omp_
/* Trip and adjustment setup goes in ENTRY_BB. */
gsi = gsi_last_nondebug_bb (entry_bb);
gcc_assert (gimple_code (gsi_stmt (gsi)) == GIMPLE_OMP_FOR);
+ gsip = gsi;
+ gsi_prev (&gsip);
if (fd->collapse > 1)
{
@@ -4090,28 +4246,64 @@ expand_omp_for_static_chunk (struct omp_
gsi = gsi_last_bb (entry_bb);
}
- if (fd->have_reductemp)
+ if (fd->have_reductemp || fd->lastprivate_conditional)
{
tree t1 = build_int_cst (long_integer_type_node, 0);
tree t2 = build_int_cst (long_integer_type_node, 1);
tree t3 = build_int_cstu (long_integer_type_node,
(HOST_WIDE_INT_1U << 31) + 1);
tree clauses = gimple_omp_for_clauses (fd->for_stmt);
- clauses = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_);
- reductions = OMP_CLAUSE_DECL (clauses);
- gcc_assert (TREE_CODE (reductions) == SSA_NAME);
- gimple *g = SSA_NAME_DEF_STMT (reductions);
- reductions = gimple_assign_rhs1 (g);
- OMP_CLAUSE_DECL (clauses) = reductions;
- gimple_stmt_iterator gsi2 = gsi_for_stmt (g);
+ gimple_stmt_iterator gsi2 = gsi_none ();
+ gimple *g = NULL;
+ tree mem = null_pointer_node, memv = NULL_TREE;
+ tree condtemp = NULL_TREE;
+ if (fd->have_reductemp)
+ {
+ tree c = omp_find_clause (clauses, OMP_CLAUSE__REDUCTEMP_);
+ reductions = OMP_CLAUSE_DECL (c);
+ gcc_assert (TREE_CODE (reductions) == SSA_NAME);
+ g = SSA_NAME_DEF_STMT (reductions);
+ reductions = gimple_assign_rhs1 (g);
+ OMP_CLAUSE_DECL (c) = reductions;
+ gsi2 = gsi_for_stmt (g);
+ }
+ else
+ {
+ if (gsi_end_p (gsip))
+ gsi2 = gsi_after_labels (region->entry);
+ else
+ gsi2 = gsip;
+ reductions = null_pointer_node;
+ }
+ if (fd->lastprivate_conditional)
+ {
+ tree c = omp_find_clause (clauses, OMP_CLAUSE__CONDTEMP_);
+ condtemp = OMP_CLAUSE_DECL (c);
+ c = omp_find_clause (OMP_CLAUSE_CHAIN (c), OMP_CLAUSE__CONDTEMP_);
+ cond_var = OMP_CLAUSE_DECL (c);
+ tree type = TREE_TYPE (condtemp);
+ memv = create_tmp_var (type);
+ TREE_ADDRESSABLE (memv) = 1;
+ unsigned HOST_WIDE_INT sz
+ = tree_to_uhwi (TYPE_SIZE_UNIT (TREE_TYPE (type)));
+ sz *= fd->lastprivate_conditional;
+ expand_omp_build_assign (&gsi2, memv, build_int_cst (type, sz),
+ false);
+ mem = build_fold_addr_expr (memv);
+ }
tree t
= build_call_expr (builtin_decl_explicit (BUILT_IN_GOMP_LOOP_START),
9, t1, t2, t2, t3, t1, null_pointer_node,
- null_pointer_node, reductions, null_pointer_node);
+ null_pointer_node, reductions, mem);
force_gimple_operand_gsi (&gsi2, t, true, NULL_TREE,
true, GSI_SAME_STMT);
- gsi_remove (&gsi2, true);
- release_ssa_name (gimple_assign_lhs (g));
+ if (fd->lastprivate_conditional)
+ expand_omp_build_assign (&gsi2, condtemp, memv, false);
+ if (fd->have_reductemp)
+ {
+ gsi_remove (&gsi2, true);
+ release_ssa_name (gimple_assign_lhs (g));
+ }
}
switch (gimple_omp_for_kind (fd->for_stmt))
{
@@ -4286,6 +4478,33 @@ expand_omp_for_static_chunk (struct omp_
NULL_TREE, false, GSI_CONTINUE_LINKING);
assign_stmt = gimple_build_assign (startvar, t);
gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING);
+ if (cond_var)
+ {
+ tree itype = TREE_TYPE (cond_var);
+ /* For lastprivate(conditional:) itervar, we need some iteration
+ counter that starts at unsigned non-zero and increases.
+ Prefer as few IVs as possible, so if we can use startvar
+ itself, use that, or startvar + constant (those would be
+ incremented with step), and as last resort use the s0 + 1
+ incremented by 1. */
+ if (POINTER_TYPE_P (type)
+ || TREE_CODE (n1) != INTEGER_CST
+ || fd->loop.cond_code != LT_EXPR)
+ t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, s0),
+ build_int_cst (itype, 1));
+ else if (tree_int_cst_sgn (n1) == 1)
+ t = fold_convert (itype, t);
+ else
+ {
+ tree c = fold_convert (itype, n1);
+ c = fold_build2 (MINUS_EXPR, itype, build_int_cst (itype, 1), c);
+ t = fold_build2 (PLUS_EXPR, itype, fold_convert (itype, t), c);
+ }
+ t = force_gimple_operand_gsi (&gsi, t, false,
+ NULL_TREE, false, GSI_CONTINUE_LINKING);
+ assign_stmt = gimple_build_assign (cond_var, t);
+ gsi_insert_after (&gsi, assign_stmt, GSI_CONTINUE_LINKING);
+ }
t = fold_convert (itype, e0);
t = fold_build2 (MULT_EXPR, itype, t, step);
@@ -4416,7 +4635,7 @@ expand_omp_for_static_chunk (struct omp_
if (!gimple_omp_return_nowait_p (gsi_stmt (gsi)))
{
t = gimple_omp_return_lhs (gsi_stmt (gsi));
- if (fd->have_reductemp)
+ if (fd->have_reductemp || fd->lastprivate_conditional)
{
tree fn;
if (t)
@@ -4427,9 +4646,10 @@ expand_omp_for_static_chunk (struct omp_
if (t)
{
gimple_call_set_lhs (g, t);
- gsi_insert_after (&gsi, gimple_build_assign (reductions,
- NOP_EXPR, t),
- GSI_SAME_STMT);
+ if (fd->have_reductemp)
+ gsi_insert_after (&gsi, gimple_build_assign (reductions,
+ NOP_EXPR, t),
+ GSI_SAME_STMT);
}
gsi_insert_after (&gsi, g, GSI_SAME_STMT);
}
@@ -6043,7 +6263,7 @@ expand_omp_for (struct omp_region *regio
else
start_ix = ((int)BUILT_IN_GOMP_LOOP_STATIC_START) + fn_index;
next_ix = ((int)BUILT_IN_GOMP_LOOP_STATIC_NEXT) + fn_index;
- if (fd.have_reductemp)
+ if (fd.have_reductemp || fd.lastprivate_conditional)
{
if (fd.ordered)
start_ix = (int)BUILT_IN_GOMP_LOOP_DOACROSS_START;
--- gcc/testsuite/c-c++-common/gomp/lastprivate-conditional-2.c.jj 2018-11-09 21:19:15.705682627 +0100
+++ gcc/testsuite/c-c++-common/gomp/lastprivate-conditional-2.c 2019-05-24 16:42:16.088941251 +0200
@@ -4,7 +4,7 @@ foo (int *p)
int a = -1, b = -1, c = -1, d = -1, e = -1, f = -1, g = -1, h = -1;
int i;
#pragma omp parallel
- #pragma omp for lastprivate (conditional: a) /* { dg-message "not supported yet" } */
+ #pragma omp for lastprivate (conditional: a)
for (i = 0; i < 32; i++)
if (p[i])
a = i;
--- gcc/testsuite/c-c++-common/gomp/lastprivate-conditional-3.c.jj 2019-05-24 19:28:58.547326117 +0200
+++ gcc/testsuite/c-c++-common/gomp/lastprivate-conditional-3.c 2019-05-24 19:31:50.762517256 +0200
@@ -0,0 +1,26 @@
+void
+foo (int *p)
+{
+ int i, j, k;
+ #pragma omp parallel
+ {
+ #pragma omp for lastprivate (conditional: i) /* { dg-warning "conditional 'lastprivate' on loop iterator 'i' ignored" } */
+ for (i = 0; i < 32; i++)
+ ;
+ #pragma omp for collapse (3) lastprivate (conditional: i) /* { dg-warning "conditional 'lastprivate' on loop iterator 'i' ignored" } */
+ for (i = 0; i < 32; i++)
+ for (j = 0; j < 32; ++j)
+ for (k = 0; k < 2; ++k)
+ ;
+ #pragma omp for collapse (3) lastprivate (conditional: j) /* { dg-warning "conditional 'lastprivate' on loop iterator 'j' ignored" } */
+ for (i = 0; i < 32; i++)
+ for (j = 0; j < 32; ++j)
+ for (k = 0; k < 2; ++k)
+ ;
+ #pragma omp for collapse (3) lastprivate (conditional: k) /* { dg-warning "conditional 'lastprivate' on loop iterator 'k' ignored" } */
+ for (i = 0; i < 32; i++)
+ for (j = 0; j < 32; ++j)
+ for (k = 0; k < 2; ++k)
+ ;
+ }
+}
--- libgomp/testsuite/libgomp.c-c++-common/lastprivate-conditional-1.c.jj 2019-05-24 13:04:52.250766138 +0200
+++ libgomp/testsuite/libgomp.c-c++-common/lastprivate-conditional-1.c 2019-05-24 19:27:38.782627093 +0200
@@ -0,0 +1,144 @@
+/* { dg-do run } */
+/* { dg-require-effective-target tls_runtime } */
+/* { dg-additional-options "-std=gnu99" {target c } } */
+
+#include <omp.h>
+#include <stdlib.h>
+
+int r, s, u, v, r2, s2, u2, v2, r3, s3, u3, v3;
+long long w, w2, w3, p, p2, p3;
+int *x, *x2, *x3;
+short y, y2, y3;
+int z;
+int thr1, thr2;
+#pragma omp threadprivate (thr1, thr2)
+
+void
+foo (int *a, long long int b, long long int c)
+{
+ int i;
+ long long j;
+ #pragma omp for lastprivate (conditional: u, x) nowait
+ for (i = 15; i < 64; i++)
+ {
+ if ((a[i] % 5) == 3)
+ u = i;
+ if ((a[i] % 7) == 2)
+ x = &a[i];
+ }
+ #pragma omp for nowait lastprivate (conditional: v) reduction (+:r, s) schedule (nonmonotonic: static)
+ for (i = -3; i < 119; i += 2)
+ {
+ ++s;
+ if ((a[i + 4] % 11) == 9)
+ v = i;
+ else
+ ++r;
+ }
+ #pragma omp for schedule (monotonic: static) lastprivate (conditional: w) nowait
+ for (j = b; j < b + 115 * c; j += (b & 3) + 7)
+ if ((a[j] % 13) == 5)
+ w = j * 2;
+ #pragma omp for schedule (auto) lastprivate (conditional: p) collapse(3)
+ for (i = -5; i < (int) (b + 5); i += 2)
+ for (j = b + 12 + c; j > b; --j)
+ for (int k = 0; k < 5; k += c)
+ if (((((i + 5) * 13 + (13 - j)) * 5 + k) % 17) == 6)
+ p = i * 10000 + j * 100 + k;
+
+ #pragma omp for schedule (nonmonotonic: static, 2) nowait lastprivate (conditional: u2, x2)
+ for (i = 15; i < 64; i++)
+ {
+ if ((a[i] % 5) == 3)
+ u2 = i;
+ if ((a[i] % 7) == 2)
+ x2 = &a[i];
+ }
+ #pragma omp for schedule (static, 3) lastprivate (conditional: v2) reduction (+:r2, s2)
+ for (i = -3; i < 119; i += 2)
+ {
+ ++s2;
+ if ((a[i + 4] % 11) == 9)
+ v2 = i;
+ else
+ ++r2;
+ }
+ #pragma omp for lastprivate (conditional: w2) schedule (static, 1) nowait
+ for (j = b; j < b + 115 * c; j += (b & 3) + 7)
+ if ((a[j] % 13) == 5)
+ w2 = j * 2;
+ #pragma omp for schedule (static, 3) collapse (3) lastprivate (conditional: p2)
+ for (i = -5; i < (int) (b + 5); i += 2)
+ for (j = b + 12 + c; j > b; --j)
+ for (int k = 0; k < 5; k += c)
+ if (((((i + 5) * 13 + (13 - j)) * 5 + k) % 17) == 6)
+ p2 = i * 10000 + j * 100 + k;
+
+ #pragma omp for lastprivate (conditional: u3, x3) nowait schedule (runtime)
+ for (i = 15; i < 64; i++)
+ {
+ if ((a[i] % 5) == 3)
+ u3 = i;
+ if ((a[i] % 7) == 2)
+ x3 = &a[i];
+ }
+ #pragma omp for nowait lastprivate (conditional: v3) reduction (+:r3, s3) schedule (nonmonotonic: dynamic)
+ for (i = -3; i < 119; i += 2)
+ {
+ ++s3;
+ if ((a[i + 4] % 11) == 9)
+ v3 = i;
+ else
+ ++r3;
+ }
+ #pragma omp for schedule (monotonic: guided, 3) lastprivate (conditional: w3) nowait
+ for (j = b; j < b + 115 * c; j += (b & 3) + 7)
+ if ((a[j] % 13) == 5)
+ w3 = j * 2;
+ #pragma omp for schedule (dynamic, 4) lastprivate (conditional: p3) collapse(3)
+ for (i = -5; i < (int) (b + 5); i += 2)
+ for (j = b + 12 + c; j > b; --j)
+ for (int k = 0; k < 5; k += c)
+ if (((((i + 5) * 13 + (13 - j)) * 5 + k) % 17) == 6)
+ p3 = i * 10000 + j * 100 + k;
+
+ /* Nasty testcase, verify that even a no-op assignment is accounted
+ for in lastprivate(conditional:). */
+ #pragma omp for schedule (monotonic: static, 2) firstprivate (z) \
+ lastprivate (conditional: z)
+ for (int k = -2000; k < 8000; ++k)
+ {
+ if (k < 3000 && (k & 3) == 1)
+ {
+ z = k;
+ thr1 = k;
+ }
+ else if (k == 7931)
+ {
+ z = z;
+ thr2 = 1;
+ }
+ }
+
+ if (thr2 && z != thr1)
+ abort ();
+}
+
+int
+main ()
+{
+ int a[128], i;
+ volatile int j = 0;
+ for (i = 0; i < 128; i++)
+ a[i] = i;
+ w = 1234;
+ #pragma omp parallel
+ foo (a, j, j + 1);
+ if (u != 63 || v != 115 || w != 140 || x != &a[58] || r != 55 || s != 61 || p != 30104)
+ abort ();
+ if (u2 != 63 || v2 != 115 || w2 != 140 || x2 != &a[58] || r2 != 55 || s2 != 61 || p2 != 30104)
+ abort ();
+ if (u3 != 63 || v3 != 115 || w3 != 140 || x3 != &a[58] || r3 != 55 || s3 != 61 || p3 != 30104)
+ abort ();
+ return 0;
+}
--- libgomp/testsuite/libgomp.c-c++-common/lastprivate-conditional-2.c.jj 2019-05-24 19:32:10.541194656 +0200
+++ libgomp/testsuite/libgomp.c-c++-common/lastprivate-conditional-2.c 2019-05-24 19:40:00.780520356 +0200
@@ -0,0 +1,171 @@
+/* { dg-do run } */
+/* { dg-require-effective-target tls_runtime } */
+/* { dg-additional-options "-std=gnu99" {target c } } */
+
+#include <omp.h>
+#include <stdlib.h>
+
+int r, s, u, v, r2, s2, u2, v2, r3, s3, u3, v3, t;
+long long w, w2, w3, p, p2, p3;
+int *x, *x2, *x3;
+short y, y2, y3;
+int z;
+int thr1, thr2;
+#pragma omp threadprivate (thr1, thr2)
+
+void
+foo (int *a, long long int b, long long int c)
+{
+ int i;
+ long long j;
+ #pragma omp for lastprivate (conditional: u, x) reduction (task, +: t)
+ for (i = 15; i < 64; i++)
+ {
+ ++t;
+ if ((a[i] % 5) == 3)
+ u = i;
+ if ((a[i] % 7) == 2)
+ x = &a[i];
+ }
+ #pragma omp for lastprivate (conditional: v) reduction (+:r, s) schedule (nonmonotonic: static) reduction (task, +: t)
+ for (i = -3; i < 119; i += 2)
+ {
+ ++s;
+ ++t;
+ if ((a[i + 4] % 11) == 9)
+ v = i;
+ else
+ ++r;
+ }
+ #pragma omp for schedule (monotonic: static) lastprivate (conditional: w) reduction (task, +: t)
+ for (j = b; j < b + 115 * c; j += (b & 3) + 7)
+ {
+ if ((a[j] % 13) == 5)
+ w = j * 2;
+ ++t;
+ }
+ #pragma omp for schedule (auto) lastprivate (conditional: p) collapse(3) reduction (task, +: t)
+ for (i = -5; i < (int) (b + 5); i += 2)
+ for (j = b + 12 + c; j > b; --j)
+ for (int k = 0; k < 5; k += c)
+ {
+ ++t;
+ if (((((i + 5) * 13 + (13 - j)) * 5 + k) % 17) == 6)
+ p = i * 10000 + j * 100 + k;
+ }
+
+ #pragma omp for schedule (nonmonotonic: static, 2) reduction (task, +: t) lastprivate (conditional: u2, x2)
+ for (i = 15; i < 64; i++)
+ {
+ if ((a[i] % 5) == 3)
+ u2 = i;
+ if ((a[i] % 7) == 2)
+ x2 = &a[i];
+ t++;
+ }
+ #pragma omp for schedule (static, 3) lastprivate (conditional: v2) reduction (+:r2, s2) reduction (task, +: t)
+ for (i = -3; i < 119; i += 2)
+ {
+ ++s2;
+ if ((a[i + 4] % 11) == 9)
+ v2 = i;
+ else
+ ++r2;
+ t++;
+ }
+ #pragma omp for lastprivate (conditional: w2) schedule (static, 1) reduction (task, +: t)
+ for (j = b; j < b + 115 * c; j += (b & 3) + 7)
+ {
+ if ((a[j] % 13) == 5)
+ w2 = j * 2;
+ t += 1;
+ }
+ #pragma omp for schedule (static, 3) collapse (3) reduction (task, +: t) lastprivate (conditional: p2)
+ for (i = -5; i < (int) (b + 5); i += 2)
+ for (j = b + 12 + c; j > b; --j)
+ for (int k = 0; k < 5; k += c)
+ {
+ ++t;
+ if (((((i + 5) * 13 + (13 - j)) * 5 + k) % 17) == 6)
+ p2 = i * 10000 + j * 100 + k;
+ }
+
+ #pragma omp for lastprivate (conditional: u3, x3) reduction (task, +: t) schedule (runtime)
+ for (i = 15; i < 64; i++)
+ {
+ t = t + 1;
+ if ((a[i] % 5) == 3)
+ u3 = i;
+ if ((a[i] % 7) == 2)
+ x3 = &a[i];
+ }
+ #pragma omp for reduction (task, +: t) lastprivate (conditional: v3) reduction (+:r3, s3) schedule (nonmonotonic: dynamic)
+ for (i = -3; i < 119; i += 2)
+ {
+ ++s3;
+ if ((a[i + 4] % 11) == 9)
+ v3 = i;
+ else
+ ++r3;
+ ++t;
+ }
+ #pragma omp for schedule (monotonic: guided, 3) lastprivate (conditional: w3) reduction (task, +: t)
+ for (j = b; j < b + 115 * c; j += (b & 3) + 7)
+ {
+ if ((a[j] % 13) == 5)
+ w3 = j * 2;
+ t++;
+ }
+ #pragma omp for schedule (dynamic, 4) lastprivate (conditional: p3) collapse(3) reduction (task, +: t)
+ for (i = -5; i < (int) (b + 5); i += 2)
+ for (j = b + 12 + c; j > b; --j)
+ for (int k = 0; k < 5; k += c)
+ {
+ ++t;
+ if (((((i + 5) * 13 + (13 - j)) * 5 + k) % 17) == 6)
+ p3 = i * 10000 + j * 100 + k;
+ }
+
+ /* Nasty testcase, verify that even a no-op assignment is accounted
+ for in lastprivate(conditional:). */
+ #pragma omp for schedule (monotonic: static, 2) firstprivate (z) \
+ lastprivate (conditional: z) reduction (task, +: t)
+ for (int k = -2000; k < 8000; ++k)
+ {
+ t++;
+ if (k < 3000 && (k & 3) == 1)
+ {
+ z = k;
+ thr1 = k;
+ }
+ else if (k == 7931)
+ {
+ z = z;
+ thr2 = 1;
+ }
+ }
+
+ if (thr2 && z != thr1)
+ abort ();
+}
+
+int
+main ()
+{
+ int a[128], i;
+ volatile int j = 0;
+ for (i = 0; i < 128; i++)
+ a[i] = i;
+ w = 1234;
+ #pragma omp parallel
+ foo (a, j, j + 1);
+ if (u != 63 || v != 115 || w != 140 || x != &a[58] || r != 55 || s != 61 || p != 30104)
+ abort ();
+ if (u2 != 63 || v2 != 115 || w2 != 140 || x2 != &a[58] || r2 != 55 || s2 != 61 || p2 != 30104)
+ abort ();
+ if (u3 != 63 || v3 != 115 || w3 != 140 || x3 != &a[58] || r3 != 55 || s3 != 61 || p3 != 30104)
+ abort ();
+ if (t != 11356)
+ abort ();
+ return 0;
+}
Jakub
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