pop_gimplify_context (NULL_TREE);
}
-
-/* Pass *TP back through the gimplifier within the context determined by WI.
- This handles replacement of DECL_VALUE_EXPR, as well as adjusting the
- flags on ADDR_EXPR. */
-
-static void
-lower_regimplify (tree *tp, struct walk_stmt_info *wi)
-{
- enum gimplify_status gs;
- tree pre = NULL;
-
- if (wi->is_lhs)
- gs = gimplify_expr (tp, &pre, NULL, is_gimple_lvalue, fb_lvalue);
- else if (wi->val_only)
- gs = gimplify_expr (tp, &pre, NULL, is_gimple_val, fb_rvalue);
- else
- gs = gimplify_expr (tp, &pre, NULL, is_gimple_formal_tmp_var, fb_rvalue);
- gcc_assert (gs == GS_ALL_DONE);
-
- if (pre)
- tsi_link_before (&wi->tsi, pre, TSI_SAME_STMT);
-}
-
-/* Copy EXP into a temporary. Insert the initialization statement before TSI. */
+/* Callback for lower_omp_1. Return non-NULL if *tp needs to be
+ regimplified. */
static tree
-init_tmp_var (tree exp, tree_stmt_iterator *tsi)
+lower_omp_2 (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
{
- tree t, stmt;
-
- t = create_tmp_var (TREE_TYPE (exp), NULL);
- DECL_GIMPLE_REG_P (t) = 1;
- stmt = build_gimple_modify_stmt (t, exp);
- SET_EXPR_LOCUS (stmt, EXPR_LOCUS (tsi_stmt (*tsi)));
- tsi_link_before (tsi, stmt, TSI_SAME_STMT);
-
- return t;
-}
-
-/* Similarly, but copy from the temporary and insert the statement
- after the iterator. */
+ tree t = *tp;
-static tree
-save_tmp_var (tree exp, tree_stmt_iterator *tsi)
-{
- tree t, stmt;
+ /* Any variable with DECL_VALUE_EXPR needs to be regimplified. */
+ if (TREE_CODE (t) == VAR_DECL && DECL_HAS_VALUE_EXPR_P (t))
+ return t;
- t = create_tmp_var (TREE_TYPE (exp), NULL);
- DECL_GIMPLE_REG_P (t) = 1;
- stmt = build_gimple_modify_stmt (exp, t);
- SET_EXPR_LOCUS (stmt, EXPR_LOCUS (tsi_stmt (*tsi)));
- tsi_link_after (tsi, stmt, TSI_SAME_STMT);
+ /* If a global variable has been privatized, TREE_CONSTANT on
+ ADDR_EXPR might be wrong. */
+ if (TREE_CODE (t) == ADDR_EXPR)
+ recompute_tree_invariant_for_addr_expr (t);
- return t;
+ *walk_subtrees = !TYPE_P (t) && !DECL_P (t);
+ return NULL_TREE;
}
-/* Callback for walk_stmts. Lower the OpenMP directive pointed by TP. */
-
-static tree
-lower_omp_1 (tree *tp, int *walk_subtrees, void *data)
+static void
+lower_omp_1 (tree *tp, omp_context *ctx, tree_stmt_iterator *tsi)
{
- struct walk_stmt_info *wi = data;
- omp_context *ctx = wi->info;
tree t = *tp;
+ if (!t)
+ return;
+
+ if (EXPR_HAS_LOCATION (t))
+ input_location = EXPR_LOCATION (t);
+
/* If we have issued syntax errors, avoid doing any heavy lifting.
Just replace the OpenMP directives with a NOP to avoid
confusing RTL expansion. */
- if (errorcount && OMP_DIRECTIVE_P (*tp))
+ if (errorcount && OMP_DIRECTIVE_P (t))
{
*tp = build_empty_stmt ();
- return NULL_TREE;
+ return;
}
- *walk_subtrees = 0;
- switch (TREE_CODE (*tp))
+ switch (TREE_CODE (t))
{
+ case STATEMENT_LIST:
+ {
+ tree_stmt_iterator i;
+ for (i = tsi_start (t); !tsi_end_p (i); tsi_next (&i))
+ lower_omp_1 (tsi_stmt_ptr (i), ctx, &i);
+ }
+ break;
+
+ case COND_EXPR:
+ lower_omp_1 (&COND_EXPR_THEN (t), ctx, NULL);
+ lower_omp_1 (&COND_EXPR_ELSE (t), ctx, NULL);
+ if (ctx
+ && walk_tree (&COND_EXPR_COND (t), lower_omp_2, ctx, NULL))
+ {
+ tree pre = NULL;
+ gimplify_expr (&COND_EXPR_COND (t), &pre, NULL,
+ is_gimple_condexpr, fb_rvalue);
+ if (pre)
+ {
+ if (tsi)
+ tsi_link_before (tsi, pre, TSI_SAME_STMT);
+ else
+ {
+ append_to_statement_list (t, &pre);
+ *tp = pre;
+ }
+ }
+ }
+ break;
+ case CATCH_EXPR:
+ lower_omp_1 (&CATCH_BODY (t), ctx, NULL);
+ break;
+ case EH_FILTER_EXPR:
+ lower_omp_1 (&EH_FILTER_FAILURE (t), ctx, NULL);
+ break;
+ case TRY_CATCH_EXPR:
+ case TRY_FINALLY_EXPR:
+ lower_omp_1 (&TREE_OPERAND (t, 0), ctx, NULL);
+ lower_omp_1 (&TREE_OPERAND (t, 1), ctx, NULL);
+ break;
+ case BIND_EXPR:
+ lower_omp_1 (&BIND_EXPR_BODY (t), ctx, NULL);
+ break;
+ case RETURN_EXPR:
+ lower_omp_1 (&TREE_OPERAND (t, 0), ctx, NULL);
+ break;
+
case OMP_PARALLEL:
ctx = maybe_lookup_ctx (t);
lower_omp_parallel (tp, ctx);
break;
-
case OMP_FOR:
ctx = maybe_lookup_ctx (t);
gcc_assert (ctx);
lower_omp_for (tp, ctx);
break;
-
case OMP_SECTIONS:
ctx = maybe_lookup_ctx (t);
gcc_assert (ctx);
lower_omp_sections (tp, ctx);
break;
-
case OMP_SINGLE:
ctx = maybe_lookup_ctx (t);
gcc_assert (ctx);
lower_omp_single (tp, ctx);
break;
-
case OMP_MASTER:
ctx = maybe_lookup_ctx (t);
gcc_assert (ctx);
lower_omp_master (tp, ctx);
break;
-
case OMP_ORDERED:
ctx = maybe_lookup_ctx (t);
gcc_assert (ctx);
lower_omp_ordered (tp, ctx);
break;
-
case OMP_CRITICAL:
ctx = maybe_lookup_ctx (t);
gcc_assert (ctx);
lower_omp_critical (tp, ctx);
break;
- case VAR_DECL:
- if (ctx && DECL_HAS_VALUE_EXPR_P (t))
+ default:
+ if (ctx && walk_tree (tp, lower_omp_2, ctx, NULL))
{
- lower_regimplify (&t, wi);
- if (wi->val_only)
+ /* The gimplifier doesn't gimplify CALL_EXPR_STATIC_CHAIN.
+ Handle that here. */
+ tree call = get_call_expr_in (t);
+ if (call
+ && CALL_EXPR_STATIC_CHAIN (call)
+ && walk_tree (&CALL_EXPR_STATIC_CHAIN (call), lower_omp_2,
+ ctx, NULL))
{
- if (wi->is_lhs)
- t = save_tmp_var (t, &wi->tsi);
- else
- t = init_tmp_var (t, &wi->tsi);
+ tree pre = NULL;
+ gimplify_expr (&CALL_EXPR_STATIC_CHAIN (call), &pre, NULL,
+ is_gimple_val, fb_rvalue);
+ if (pre)
+ {
+ if (tsi)
+ tsi_link_before (tsi, pre, TSI_SAME_STMT);
+ else
+ {
+ append_to_statement_list (t, &pre);
+ lower_omp_1 (&pre, ctx, NULL);
+ *tp = pre;
+ return;
+ }
+ }
}
- *tp = t;
- }
- break;
-
- case ADDR_EXPR:
- if (ctx)
- lower_regimplify (tp, wi);
- break;
-
- case ARRAY_REF:
- case ARRAY_RANGE_REF:
- case REALPART_EXPR:
- case IMAGPART_EXPR:
- case COMPONENT_REF:
- case VIEW_CONVERT_EXPR:
- if (ctx)
- lower_regimplify (tp, wi);
- break;
- case INDIRECT_REF:
- if (ctx)
- {
- wi->is_lhs = false;
- wi->val_only = true;
- lower_regimplify (&TREE_OPERAND (t, 0), wi);
+ if (tsi == NULL)
+ gimplify_stmt (tp);
+ else
+ {
+ tree pre = NULL;
+ gimplify_expr (tp, &pre, NULL, is_gimple_stmt, fb_none);
+ if (pre)
+ tsi_link_before (tsi, pre, TSI_SAME_STMT);
+ }
}
break;
-
- default:
- if (!TYPE_P (t) && !DECL_P (t))
- *walk_subtrees = 1;
- break;
}
-
- return NULL_TREE;
}
static void
lower_omp (tree *stmt_p, omp_context *ctx)
{
- struct walk_stmt_info wi;
-
- memset (&wi, 0, sizeof (wi));
- wi.callback = lower_omp_1;
- wi.info = ctx;
- wi.val_only = true;
- wi.want_locations = true;
-
- walk_stmts (&wi, stmt_p);
+ lower_omp_1 (stmt_p, ctx, NULL);
}
\f
/* Main entry point. */
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