/* Backend function setup
- Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software
+ Foundation, Inc.
Contributed by Paul Brook
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
/* trans-decl.c -- Handling of backend function and variable decls, etc */
#include "ggc.h"
#include "toplev.h"
#include "tm.h"
+#include "rtl.h"
#include "target.h"
#include "function.h"
-#include "errors.h"
#include "flags.h"
#include "cgraph.h"
#include "gfortran.h"
/* Holds the result of the function if no result variable specified. */
static GTY(()) tree current_fake_result_decl;
+static GTY(()) tree parent_fake_result_decl;
static GTY(()) tree current_function_return_label;
/* Holds the variable DECLs for the current function. */
-static GTY(()) tree saved_function_decls = NULL_TREE;
-static GTY(()) tree saved_parent_function_decls = NULL_TREE;
+static GTY(()) tree saved_function_decls;
+static GTY(()) tree saved_parent_function_decls;
/* The namespace of the module we're currently generating. Only used while
/* Function declarations for builtin library functions. */
-tree gfor_fndecl_internal_malloc;
-tree gfor_fndecl_internal_malloc64;
-tree gfor_fndecl_internal_free;
+tree gfor_fndecl_internal_realloc;
+tree gfor_fndecl_internal_realloc64;
tree gfor_fndecl_allocate;
tree gfor_fndecl_allocate64;
+tree gfor_fndecl_allocate_array;
+tree gfor_fndecl_allocate64_array;
tree gfor_fndecl_deallocate;
tree gfor_fndecl_pause_numeric;
tree gfor_fndecl_pause_string;
tree gfor_fndecl_stop_string;
tree gfor_fndecl_select_string;
tree gfor_fndecl_runtime_error;
+tree gfor_fndecl_runtime_error_at;
+tree gfor_fndecl_os_error;
+tree gfor_fndecl_generate_error;
+tree gfor_fndecl_set_fpe;
+tree gfor_fndecl_set_std;
+tree gfor_fndecl_set_convert;
+tree gfor_fndecl_set_record_marker;
+tree gfor_fndecl_set_max_subrecord_length;
+tree gfor_fndecl_ctime;
+tree gfor_fndecl_fdate;
+tree gfor_fndecl_ttynam;
tree gfor_fndecl_in_pack;
tree gfor_fndecl_in_unpack;
tree gfor_fndecl_associated;
/* Math functions. Many other math functions are handled in
trans-intrinsic.c. */
-gfc_powdecl_list gfor_fndecl_math_powi[3][2];
+gfc_powdecl_list gfor_fndecl_math_powi[4][3];
tree gfor_fndecl_math_cpowf;
tree gfor_fndecl_math_cpow;
+tree gfor_fndecl_math_cpowl10;
+tree gfor_fndecl_math_cpowl16;
tree gfor_fndecl_math_ishftc4;
tree gfor_fndecl_math_ishftc8;
+tree gfor_fndecl_math_ishftc16;
tree gfor_fndecl_math_exponent4;
tree gfor_fndecl_math_exponent8;
+tree gfor_fndecl_math_exponent10;
+tree gfor_fndecl_math_exponent16;
/* String functions. */
-tree gfor_fndecl_copy_string;
tree gfor_fndecl_compare_string;
tree gfor_fndecl_concat_string;
tree gfor_fndecl_string_len_trim;
tree gfor_fndecl_string_scan;
tree gfor_fndecl_string_verify;
tree gfor_fndecl_string_trim;
-tree gfor_fndecl_string_repeat;
tree gfor_fndecl_adjustl;
tree gfor_fndecl_adjustr;
tree gfor_fndecl_si_kind;
tree gfor_fndecl_sr_kind;
+/* BLAS gemm functions. */
+tree gfor_fndecl_sgemm;
+tree gfor_fndecl_dgemm;
+tree gfor_fndecl_cgemm;
+tree gfor_fndecl_zgemm;
+
static void
gfc_add_decl_to_parent_function (tree decl)
}
-/* Build a backend label declaration.
- Set TREE_USED for named lables. For artificial labels it's up to the
- caller to mark the label as used. */
+/* Build a backend label declaration. Set TREE_USED for named labels.
+ The context of the label is always the current_function_decl. All
+ labels are marked artificial. */
tree
gfc_build_label_decl (tree label_id)
DECL_CONTEXT (label_decl) = current_function_decl;
DECL_MODE (label_decl) = VOIDmode;
- if (label_name)
- {
- DECL_ARTIFICIAL (label_decl) = 1;
- }
- else
- {
- /* We always define the label as used, even if the original source
- file never references the label. We don't want all kinds of
- spurious warnings for old-style Fortran code with too many
- labels. */
- TREE_USED (label_decl) = 1;
- }
+ /* We always define the label as used, even if the original source
+ file never references the label. We don't want all kinds of
+ spurious warnings for old-style Fortran code with too many
+ labels. */
+ TREE_USED (label_decl) = 1;
+ DECL_ARTIFICIAL (label_decl) = 1;
return label_decl;
}
{
char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1];
- if (sym->module[0] == 0)
+ if (sym->module == NULL)
return gfc_sym_identifier (sym);
else
{
- snprintf (name, sizeof name, "__%s__%s", sym->module, sym->name);
+ snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name);
return get_identifier (name);
}
}
int has_underscore;
char name[GFC_MAX_MANGLED_SYMBOL_LEN + 1];
- if (sym->module[0] == 0 || sym->attr.proc == PROC_EXTERNAL
- || (sym->module[0] != 0 && sym->attr.if_source == IFSRC_IFBODY))
+ if (sym->module == NULL || sym->attr.proc == PROC_EXTERNAL
+ || (sym->module != NULL && (sym->attr.external
+ || sym->attr.if_source == IFSRC_IFBODY)))
{
if (strcmp (sym->name, "MAIN__") == 0
|| sym->attr.proc == PROC_INTRINSIC)
}
else
{
- snprintf (name, sizeof name, "__%s__%s", sym->module, sym->name);
+ snprintf (name, sizeof name, "__%s_MOD_%s", sym->module, sym->name);
return get_identifier (name);
}
}
-/* Finish processing of a declaration and install its initial value. */
+/* Returns true if a variable of specified size should go on the stack. */
+
+int
+gfc_can_put_var_on_stack (tree size)
+{
+ unsigned HOST_WIDE_INT low;
+
+ if (!INTEGER_CST_P (size))
+ return 0;
+
+ if (gfc_option.flag_max_stack_var_size < 0)
+ return 1;
+
+ if (TREE_INT_CST_HIGH (size) != 0)
+ return 0;
+
+ low = TREE_INT_CST_LOW (size);
+ if (low > (unsigned HOST_WIDE_INT) gfc_option.flag_max_stack_var_size)
+ return 0;
+
+/* TODO: Set a per-function stack size limit. */
+
+ return 1;
+}
+
+
+/* gfc_finish_cray_pointee sets DECL_VALUE_EXPR for a Cray pointee to
+ an expression involving its corresponding pointer. There are
+ 2 cases; one for variable size arrays, and one for everything else,
+ because variable-sized arrays require one fewer level of
+ indirection. */
static void
-gfc_finish_decl (tree decl, tree init)
+gfc_finish_cray_pointee (tree decl, gfc_symbol *sym)
{
- if (TREE_CODE (decl) == PARM_DECL)
- gcc_assert (init == NULL_TREE);
- /* Remember that PARM_DECL doesn't have a DECL_INITIAL field per se
- -- it overlaps DECL_ARG_TYPE. */
- else if (init == NULL_TREE)
- gcc_assert (DECL_INITIAL (decl) == NULL_TREE);
+ tree ptr_decl = gfc_get_symbol_decl (sym->cp_pointer);
+ tree value;
+
+ /* Parameters need to be dereferenced. */
+ if (sym->cp_pointer->attr.dummy)
+ ptr_decl = build_fold_indirect_ref (ptr_decl);
+
+ /* Check to see if we're dealing with a variable-sized array. */
+ if (sym->attr.dimension
+ && TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE)
+ {
+ /* These decls will be dereferenced later, so we don't dereference
+ them here. */
+ value = convert (TREE_TYPE (decl), ptr_decl);
+ }
else
- gcc_assert (DECL_INITIAL (decl) == error_mark_node);
-
- if (init != NULL_TREE)
{
- if (TREE_CODE (decl) != TYPE_DECL)
- DECL_INITIAL (decl) = init;
- else
- {
- /* typedef foo = bar; store the type of bar as the type of foo. */
- TREE_TYPE (decl) = TREE_TYPE (init);
- DECL_INITIAL (decl) = init = 0;
- }
+ ptr_decl = convert (build_pointer_type (TREE_TYPE (decl)),
+ ptr_decl);
+ value = build_fold_indirect_ref (ptr_decl);
}
- if (TREE_CODE (decl) == VAR_DECL)
- {
- if (DECL_SIZE (decl) == NULL_TREE
- && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE)
- layout_decl (decl, 0);
+ SET_DECL_VALUE_EXPR (decl, value);
+ DECL_HAS_VALUE_EXPR_P (decl) = 1;
+ GFC_DECL_CRAY_POINTEE (decl) = 1;
+ /* This is a fake variable just for debugging purposes. */
+ TREE_ASM_WRITTEN (decl) = 1;
+}
- /* A static variable with an incomplete type is an error if it is
- initialized. Also if it is not file scope. Otherwise, let it
- through, but if it is not `extern' then it may cause an error
- message later. */
- /* An automatic variable with an incomplete type is an error. */
- if (DECL_SIZE (decl) == NULL_TREE
- && (TREE_STATIC (decl) ? (DECL_INITIAL (decl) != 0
- || DECL_CONTEXT (decl) != 0)
- : !DECL_EXTERNAL (decl)))
- {
- gfc_fatal_error ("storage size not known");
- }
- if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
- && (DECL_SIZE (decl) != 0)
- && (TREE_CODE (DECL_SIZE (decl)) != INTEGER_CST))
- {
- gfc_fatal_error ("storage size not constant");
- }
- }
+/* Finish processing of a declaration without an initial value. */
+
+static void
+gfc_finish_decl (tree decl)
+{
+ gcc_assert (TREE_CODE (decl) == PARM_DECL
+ || DECL_INITIAL (decl) == NULL_TREE);
+ if (TREE_CODE (decl) != VAR_DECL)
+ return;
+
+ if (DECL_SIZE (decl) == NULL_TREE
+ && TYPE_SIZE (TREE_TYPE (decl)) != NULL_TREE)
+ layout_decl (decl, 0);
+
+ /* A few consistency checks. */
+ /* A static variable with an incomplete type is an error if it is
+ initialized. Also if it is not file scope. Otherwise, let it
+ through, but if it is not `extern' then it may cause an error
+ message later. */
+ /* An automatic variable with an incomplete type is an error. */
+
+ /* We should know the storage size. */
+ gcc_assert (DECL_SIZE (decl) != NULL_TREE
+ || (TREE_STATIC (decl)
+ ? (!DECL_INITIAL (decl) || !DECL_CONTEXT (decl))
+ : DECL_EXTERNAL (decl)));
+
+ /* The storage size should be constant. */
+ gcc_assert ((!DECL_EXTERNAL (decl) && !TREE_STATIC (decl))
+ || !DECL_SIZE (decl)
+ || TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST);
}
static void
gfc_finish_var_decl (tree decl, gfc_symbol * sym)
{
+ tree new;
/* TREE_ADDRESSABLE means the address of this variable is actually needed.
This is the equivalent of the TARGET variables.
We also need to set this if the variable is passed by reference in a
CALL statement. */
+
+ /* Set DECL_VALUE_EXPR for Cray Pointees. */
+ if (sym->attr.cray_pointee)
+ gfc_finish_cray_pointee (decl, sym);
+
if (sym->attr.target)
TREE_ADDRESSABLE (decl) = 1;
/* If it wasn't used we wouldn't be getting it. */
function scope. */
if (current_function_decl != NULL_TREE)
{
- if (sym->ns->proc_name->backend_decl == current_function_decl)
+ if (sym->ns->proc_name->backend_decl == current_function_decl
+ || sym->result == sym)
gfc_add_decl_to_function (decl);
else
gfc_add_decl_to_parent_function (decl);
}
+ if (sym->attr.cray_pointee)
+ return;
+
/* If a variable is USE associated, it's always external. */
if (sym->attr.use_assoc)
{
DECL_EXTERNAL (decl) = 1;
TREE_PUBLIC (decl) = 1;
}
- else if (sym->module[0] && !sym->attr.result && !sym->attr.dummy)
+ else if (sym->module && !sym->attr.result && !sym->attr.dummy)
{
/* TODO: Don't set sym->module for result or dummy variables. */
- gcc_assert (current_function_decl == NULL_TREE);
+ gcc_assert (current_function_decl == NULL_TREE || sym->result == sym);
/* This is the declaration of a module variable. */
TREE_PUBLIC (decl) = 1;
TREE_STATIC (decl) = 1;
if ((sym->attr.save || sym->attr.data || sym->value)
&& !sym->attr.use_assoc)
TREE_STATIC (decl) = 1;
-
+
+ if (sym->attr.volatile_)
+ {
+ TREE_THIS_VOLATILE (decl) = 1;
+ new = build_qualified_type (TREE_TYPE (decl), TYPE_QUAL_VOLATILE);
+ TREE_TYPE (decl) = new;
+ }
+
/* Keep variables larger than max-stack-var-size off stack. */
if (!sym->ns->proc_name->attr.recursive
&& INTEGER_CST_P (DECL_SIZE_UNIT (decl))
- && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl)))
+ && !gfc_can_put_var_on_stack (DECL_SIZE_UNIT (decl))
+ /* Put variable length auto array pointers always into stack. */
+ && (TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE
+ || sym->attr.dimension == 0
+ || sym->as->type != AS_EXPLICIT
+ || sym->attr.pointer
+ || sym->attr.allocatable)
+ && !DECL_ARTIFICIAL (decl))
TREE_STATIC (decl) = 1;
+
+ /* Handle threadprivate variables. */
+ if (sym->attr.threadprivate
+ && (TREE_STATIC (decl) || DECL_EXTERNAL (decl)))
+ DECL_TLS_MODEL (decl) = decl_default_tls_model (decl);
}
{
if (GFC_TYPE_ARRAY_LBOUND (type, dim) == NULL_TREE)
GFC_TYPE_ARRAY_LBOUND (type, dim) = create_index_var ("lbound", nest);
- /* Don't try to use the unkown bound for assumed shape arrays. */
+ /* Don't try to use the unknown bound for assumed shape arrays. */
if (GFC_TYPE_ARRAY_UBOUND (type, dim) == NULL_TREE
&& (sym->as->type != AS_ASSUMED_SIZE
|| dim < GFC_TYPE_ARRAY_RANK (type) - 1))
else
gfc_add_decl_to_function (GFC_TYPE_ARRAY_OFFSET (type));
}
+
+ if (GFC_TYPE_ARRAY_SIZE (type) == NULL_TREE
+ && sym->as->type != AS_ASSUMED_SIZE)
+ GFC_TYPE_ARRAY_SIZE (type) = create_index_var ("size", nest);
+
+ if (POINTER_TYPE_P (type))
+ {
+ gcc_assert (GFC_ARRAY_TYPE_P (TREE_TYPE (type)));
+ gcc_assert (TYPE_LANG_SPECIFIC (type)
+ == TYPE_LANG_SPECIFIC (TREE_TYPE (type)));
+ type = TREE_TYPE (type);
+ }
+
+ if (! COMPLETE_TYPE_P (type) && GFC_TYPE_ARRAY_SIZE (type))
+ {
+ tree size, range;
+
+ size = build2 (MINUS_EXPR, gfc_array_index_type,
+ GFC_TYPE_ARRAY_SIZE (type), gfc_index_one_node);
+ range = build_range_type (gfc_array_index_type, gfc_index_zero_node,
+ size);
+ TYPE_DOMAIN (type) = range;
+ layout_type (type);
+ }
}
/* For some dummy arguments we don't use the actual argument directly.
- Instead we create a local decl and use that. This allows us to preform
+ Instead we create a local decl and use that. This allows us to perform
initialization, and construct full type information. */
static tree
tree type;
gfc_array_spec *as;
char *name;
- int packed;
+ gfc_packed packed;
int n;
bool known_size;
type = TREE_TYPE (type);
if (GFC_DESCRIPTOR_TYPE_P (type))
{
- /* Create a decriptorless array pointer. */
+ /* Create a descriptorless array pointer. */
as = sym->as;
- packed = 0;
+ packed = PACKED_NO;
if (!gfc_option.flag_repack_arrays)
{
if (as->type == AS_ASSUMED_SIZE)
- packed = 2;
+ packed = PACKED_FULL;
}
else
{
if (as->type == AS_EXPLICIT)
{
- packed = 2;
+ packed = PACKED_FULL;
for (n = 0; n < as->rank; n++)
{
if (!(as->upper[n]
&& as->lower[n]
&& as->upper[n]->expr_type == EXPR_CONSTANT
&& as->lower[n]->expr_type == EXPR_CONSTANT))
- packed = 1;
+ packed = PACKED_PARTIAL;
}
}
else
- packed = 1;
+ packed = PACKED_PARTIAL;
}
type = gfc_typenode_for_spec (&sym->ts);
/* We now have an expression for the element size, so create a fully
qualified type. Reset sym->backend decl or this will just return the
old type. */
+ DECL_ARTIFICIAL (sym->backend_decl) = 1;
sym->backend_decl = NULL_TREE;
type = gfc_sym_type (sym);
- packed = 2;
+ packed = PACKED_FULL;
}
ASM_FORMAT_PRIVATE_NAME (name, IDENTIFIER_POINTER (DECL_NAME (dummy)), 0);
frontend bugs. */
gcc_assert (sym->as->type != AS_DEFERRED);
- switch (packed)
- {
- case 1:
- GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1;
- break;
-
- case 2:
- GFC_DECL_PACKED_ARRAY (decl) = 1;
- break;
- }
+ if (packed == PACKED_PARTIAL)
+ GFC_DECL_PARTIAL_PACKED_ARRAY (decl) = 1;
+ else if (packed == PACKED_FULL)
+ GFC_DECL_PACKED_ARRAY (decl) = 1;
gfc_build_qualified_array (decl, sym);
gfc_charlen_type_node);
DECL_ARTIFICIAL (length) = 1;
TREE_USED (length) = 1;
- gfc_defer_symbol_init (sym);
+ if (sym->ns->proc_name->tlink != NULL)
+ gfc_defer_symbol_init (sym);
sym->ts.cl->backend_decl = length;
}
return sym->ts.cl->backend_decl;
}
+/* If a variable is assigned a label, we add another two auxiliary
+ variables. */
+
+static void
+gfc_add_assign_aux_vars (gfc_symbol * sym)
+{
+ tree addr;
+ tree length;
+ tree decl;
+
+ gcc_assert (sym->backend_decl);
+
+ decl = sym->backend_decl;
+ gfc_allocate_lang_decl (decl);
+ GFC_DECL_ASSIGN (decl) = 1;
+ length = build_decl (VAR_DECL, create_tmp_var_name (sym->name),
+ gfc_charlen_type_node);
+ addr = build_decl (VAR_DECL, create_tmp_var_name (sym->name),
+ pvoid_type_node);
+ gfc_finish_var_decl (length, sym);
+ gfc_finish_var_decl (addr, sym);
+ /* STRING_LENGTH is also used as flag. Less than -1 means that
+ ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the
+ target label's address. Otherwise, value is the length of a format string
+ and ASSIGN_ADDR is its address. */
+ if (TREE_STATIC (length))
+ DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2);
+ else
+ gfc_defer_symbol_init (sym);
+
+ GFC_DECL_STRING_LEN (decl) = length;
+ GFC_DECL_ASSIGN_ADDR (decl) = addr;
+}
/* Return the decl for a gfc_symbol, create it if it doesn't already
exist. */
tree length = NULL_TREE;
int byref;
- gcc_assert (sym->attr.referenced);
+ gcc_assert (sym->attr.referenced
+ || sym->attr.use_assoc
+ || sym->ns->proc_name->attr.if_source == IFSRC_IFBODY);
if (sym->ns && sym->ns->proc_name->attr.function)
byref = gfc_return_by_reference (sym->ns->proc_name);
{
sym->backend_decl =
DECL_ARGUMENTS (sym->ns->proc_name->backend_decl);
+ /* For entry master function skip over the __entry
+ argument. */
+ if (sym->ns->proc_name->attr.entry_master)
+ sym->backend_decl = TREE_CHAIN (sym->backend_decl);
}
/* Dummy variables should already have been created. */
if (sym->ts.type == BT_CHARACTER)
{
if (sym->ts.cl->backend_decl == NULL_TREE)
+ length = gfc_create_string_length (sym);
+ else
+ length = sym->ts.cl->backend_decl;
+ if (TREE_CODE (length) == VAR_DECL
+ && DECL_CONTEXT (length) == NULL_TREE)
{
- length = gfc_create_string_length (sym);
- if (TREE_CODE (length) != INTEGER_CST)
- {
- gfc_finish_var_decl (length, sym);
- gfc_defer_symbol_init (sym);
- }
+ /* Add the string length to the same context as the symbol. */
+ if (DECL_CONTEXT (sym->backend_decl) == current_function_decl)
+ gfc_add_decl_to_function (length);
+ else
+ gfc_add_decl_to_parent_function (length);
+
+ gcc_assert (DECL_CONTEXT (sym->backend_decl) ==
+ DECL_CONTEXT (length));
+
+ gfc_defer_symbol_init (sym);
}
}
/* Use a copy of the descriptor for dummy arrays. */
if (sym->attr.dimension && !TREE_USED (sym->backend_decl))
{
- sym->backend_decl =
- gfc_build_dummy_array_decl (sym, sym->backend_decl);
+ decl = gfc_build_dummy_array_decl (sym, sym->backend_decl);
+ /* Prevent the dummy from being detected as unused if it is copied. */
+ if (sym->backend_decl != NULL && decl != sym->backend_decl)
+ DECL_ARTIFICIAL (sym->backend_decl) = 1;
+ sym->backend_decl = decl;
}
TREE_USED (sym->backend_decl) = 1;
+ if (sym->attr.assign && GFC_DECL_ASSIGN (sym->backend_decl) == 0)
+ {
+ gfc_add_assign_aux_vars (sym);
+ }
return sym->backend_decl;
}
/* Symbols from modules should have their assembler names mangled.
This is done here rather than in gfc_finish_var_decl because it
is different for string length variables. */
- if (sym->module[0])
+ if (sym->module)
SET_DECL_ASSEMBLER_NAME (decl, gfc_sym_mangled_identifier (sym));
if (sym->attr.dimension)
GFC_DECL_PACKED_ARRAY (decl) = 1;
}
- gfc_finish_var_decl (decl, sym);
+ if (sym->ts.type == BT_DERIVED && sym->ts.derived->attr.alloc_comp)
+ gfc_defer_symbol_init (sym);
- if (sym->attr.assign)
- {
- gfc_allocate_lang_decl (decl);
- GFC_DECL_ASSIGN (decl) = 1;
- length = gfc_create_var (gfc_charlen_type_node, sym->name);
- GFC_DECL_STRING_LEN (decl) = length;
- GFC_DECL_ASSIGN_ADDR (decl) = gfc_create_var (pvoid_type_node, sym->name);
- /* TODO: Need to check we don't change TREE_STATIC (decl) later. */
- TREE_STATIC (length) = TREE_STATIC (decl);
- /* STRING_LENGTH is also used as flag. Less than -1 means that
- ASSIGN_ADDR can not be used. Equal -1 means that ASSIGN_ADDR is the
- target label's address. Other value is the length of format string
- and ASSIGN_ADDR is the address of format string. */
- DECL_INITIAL (length) = build_int_cst (NULL_TREE, -2);
- }
+ gfc_finish_var_decl (decl, sym);
if (sym->ts.type == BT_CHARACTER)
{
{
char name[GFC_MAX_MANGLED_SYMBOL_LEN + 2];
- if (sym->module[0])
+ if (sym->module)
{
/* Also prefix the mangled name for symbols from modules. */
strcpy (&name[1], sym->name);
}
sym->backend_decl = decl;
+ if (sym->attr.assign)
+ gfc_add_assign_aux_vars (sym);
+
if (TREE_STATIC (decl) && !sym->attr.use_assoc)
{
/* Add static initializer. */
gfc_expr e;
gfc_intrinsic_sym *isym;
gfc_expr argexpr;
- char s[GFC_MAX_SYMBOL_LEN];
+ char s[GFC_MAX_SYMBOL_LEN + 23]; /* "_gfortran_f2c_specific" and '\0'. */
tree name;
tree mangled_name;
isym->resolve.f1 (&e, &argexpr);
else
{
- /* All specific intrinsics take one or two arguments. */
- gcc_assert (isym->formal->next->next == NULL);
- isym->resolve.f2 (&e, &argexpr, NULL);
+ if (isym->formal->next->next == NULL)
+ isym->resolve.f2 (&e, &argexpr, NULL);
+ else
+ {
+ /* All specific intrinsics take less than 4 arguments. */
+ gcc_assert (isym->formal->next->next->next == NULL);
+ isym->resolve.f3 (&e, &argexpr, NULL, NULL);
+ }
+ }
+
+ if (gfc_option.flag_f2c
+ && ((e.ts.type == BT_REAL && e.ts.kind == gfc_default_real_kind)
+ || e.ts.type == BT_COMPLEX))
+ {
+ /* Specific which needs a different implementation if f2c
+ calling conventions are used. */
+ sprintf (s, "_gfortran_f2c_specific%s", e.value.function.name);
}
- sprintf (s, "specific%s", e.value.function.name);
+ else
+ sprintf (s, "_gfortran_specific%s", e.value.function.name);
+
name = get_identifier (s);
mangled_name = name;
}
sense. */
if (sym->attr.pure || sym->attr.elemental)
{
- if (sym->attr.function)
+ if (sym->attr.function && !gfc_return_by_reference (sym))
DECL_IS_PURE (fndecl) = 1;
/* TODO: check if pure SUBROUTINEs don't have INTENT(OUT)
parameters and don't use alternate returns (is this
TREE_SIDE_EFFECTS (fndecl) = 0;
}
+ /* Mark non-returning functions. */
+ if (sym->attr.noreturn)
+ TREE_THIS_VOLATILE(fndecl) = 1;
+
sym->backend_decl = fndecl;
if (DECL_CONTEXT (fndecl) == NULL_TREE)
/* TODO: check if a pure SUBROUTINE has no INTENT(OUT) arguments
including a alternate return. In that case it can also be
marked as PURE. See also in gfc_get_extern_function_decl(). */
- if (attr.function)
+ if (attr.function && !gfc_return_by_reference (sym))
DECL_IS_PURE (fndecl) = 1;
TREE_SIDE_EFFECTS (fndecl) = 0;
}
{
tree fndecl;
gfc_formal_arglist *f;
- tree typelist;
- tree arglist;
- tree length;
+ tree typelist, hidden_typelist;
+ tree arglist, hidden_arglist;
tree type;
tree parm;
/* Build formal argument list. Make sure that their TREE_CONTEXT is
the new FUNCTION_DECL node. */
arglist = NULL_TREE;
+ hidden_arglist = NULL_TREE;
typelist = TYPE_ARG_TYPES (TREE_TYPE (fndecl));
if (sym->attr.entry_master)
DECL_CONTEXT (parm) = fndecl;
DECL_ARG_TYPE (parm) = type;
TREE_READONLY (parm) = 1;
- gfc_finish_decl (parm, NULL_TREE);
+ gfc_finish_decl (parm);
+ DECL_ARTIFICIAL (parm) = 1;
arglist = chainon (arglist, parm);
typelist = TREE_CHAIN (typelist);
if (gfc_return_by_reference (sym))
{
- type = TREE_VALUE (typelist);
- parm = build_decl (PARM_DECL, get_identifier ("__result"), type);
-
- DECL_CONTEXT (parm) = fndecl;
- DECL_ARG_TYPE (parm) = type;
- TREE_READONLY (parm) = 1;
- DECL_ARTIFICIAL (parm) = 1;
- gfc_finish_decl (parm, NULL_TREE);
-
- arglist = chainon (arglist, parm);
- typelist = TREE_CHAIN (typelist);
+ tree type = TREE_VALUE (typelist), length = NULL;
if (sym->ts.type == BT_CHARACTER)
{
- gfc_allocate_lang_decl (parm);
-
/* Length of character result. */
- type = TREE_VALUE (typelist);
- gcc_assert (type == gfc_charlen_type_node);
+ tree len_type = TREE_VALUE (TREE_CHAIN (typelist));
+ gcc_assert (len_type == gfc_charlen_type_node);
length = build_decl (PARM_DECL,
get_identifier (".__result"),
- type);
+ len_type);
if (!sym->ts.cl->length)
{
sym->ts.cl->backend_decl = length;
TREE_USED (length) = 1;
}
gcc_assert (TREE_CODE (length) == PARM_DECL);
- arglist = chainon (arglist, length);
- typelist = TREE_CHAIN (typelist);
DECL_CONTEXT (length) = fndecl;
- DECL_ARG_TYPE (length) = type;
+ DECL_ARG_TYPE (length) = len_type;
TREE_READONLY (length) = 1;
DECL_ARTIFICIAL (length) = 1;
- gfc_finish_decl (length, NULL_TREE);
- }
- }
-
- for (f = sym->formal; f; f = f->next)
- {
- if (f->sym != NULL) /* ignore alternate returns. */
- {
- length = NULL_TREE;
+ gfc_finish_decl (length);
+ if (sym->ts.cl->backend_decl == NULL
+ || sym->ts.cl->backend_decl == length)
+ {
+ gfc_symbol *arg;
+ tree backend_decl;
- type = TREE_VALUE (typelist);
+ if (sym->ts.cl->backend_decl == NULL)
+ {
+ tree len = build_decl (VAR_DECL,
+ get_identifier ("..__result"),
+ gfc_charlen_type_node);
+ DECL_ARTIFICIAL (len) = 1;
+ TREE_USED (len) = 1;
+ sym->ts.cl->backend_decl = len;
+ }
- /* Build a the argument declaration. */
- parm = build_decl (PARM_DECL,
- gfc_sym_identifier (f->sym), type);
+ /* Make sure PARM_DECL type doesn't point to incomplete type. */
+ arg = sym->result ? sym->result : sym;
+ backend_decl = arg->backend_decl;
+ /* Temporary clear it, so that gfc_sym_type creates complete
+ type. */
+ arg->backend_decl = NULL;
+ type = gfc_sym_type (arg);
+ arg->backend_decl = backend_decl;
+ type = build_reference_type (type);
+ }
+ }
- /* Fill in arg stuff. */
- DECL_CONTEXT (parm) = fndecl;
- DECL_ARG_TYPE (parm) = type;
- DECL_ARG_TYPE_AS_WRITTEN (parm) = type;
- /* All implementation args are read-only. */
- TREE_READONLY (parm) = 1;
+ parm = build_decl (PARM_DECL, get_identifier ("__result"), type);
- gfc_finish_decl (parm, NULL_TREE);
+ DECL_CONTEXT (parm) = fndecl;
+ DECL_ARG_TYPE (parm) = TREE_VALUE (typelist);
+ TREE_READONLY (parm) = 1;
+ DECL_ARTIFICIAL (parm) = 1;
+ gfc_finish_decl (parm);
- f->sym->backend_decl = parm;
+ arglist = chainon (arglist, parm);
+ typelist = TREE_CHAIN (typelist);
- arglist = chainon (arglist, parm);
+ if (sym->ts.type == BT_CHARACTER)
+ {
+ gfc_allocate_lang_decl (parm);
+ arglist = chainon (arglist, length);
typelist = TREE_CHAIN (typelist);
}
}
- /* Add the hidden string length parameters. */
- parm = arglist;
+ hidden_typelist = typelist;
+ for (f = sym->formal; f; f = f->next)
+ if (f->sym != NULL) /* Ignore alternate returns. */
+ hidden_typelist = TREE_CHAIN (hidden_typelist);
+
for (f = sym->formal; f; f = f->next)
{
char name[GFC_MAX_SYMBOL_LEN + 2];
+
/* Ignore alternate returns. */
if (f->sym == NULL)
continue;
- if (f->sym->ts.type != BT_CHARACTER)
- continue;
-
- parm = f->sym->backend_decl;
type = TREE_VALUE (typelist);
- gcc_assert (type == gfc_charlen_type_node);
- strcpy (&name[1], f->sym->name);
- name[0] = '_';
- length = build_decl (PARM_DECL, get_identifier (name), type);
+ if (f->sym->ts.type == BT_CHARACTER)
+ {
+ tree len_type = TREE_VALUE (hidden_typelist);
+ tree length = NULL_TREE;
+ gcc_assert (len_type == gfc_charlen_type_node);
- arglist = chainon (arglist, length);
- DECL_CONTEXT (length) = fndecl;
- DECL_ARTIFICIAL (length) = 1;
- DECL_ARG_TYPE (length) = type;
- TREE_READONLY (length) = 1;
- gfc_finish_decl (length, NULL_TREE);
+ strcpy (&name[1], f->sym->name);
+ name[0] = '_';
+ length = build_decl (PARM_DECL, get_identifier (name), len_type);
+
+ hidden_arglist = chainon (hidden_arglist, length);
+ DECL_CONTEXT (length) = fndecl;
+ DECL_ARTIFICIAL (length) = 1;
+ DECL_ARG_TYPE (length) = len_type;
+ TREE_READONLY (length) = 1;
+ gfc_finish_decl (length);
- /* TODO: Check string lengths when -fbounds-check. */
+ /* TODO: Check string lengths when -fbounds-check. */
- /* Use the passed value for assumed length variables. */
- if (!f->sym->ts.cl->length)
- {
- TREE_USED (length) = 1;
- if (!f->sym->ts.cl->backend_decl)
- f->sym->ts.cl->backend_decl = length;
- else
+ /* Use the passed value for assumed length variables. */
+ if (!f->sym->ts.cl->length)
{
- /* there is already another variable using this
- gfc_charlen node, build a new one for this variable
- and chain it into the list of gfc_charlens.
- This happens for e.g. in the case
- CHARACTER(*)::c1,c2
- since CHARACTER declarations on the same line share
- the same gfc_charlen node. */
- gfc_charlen *cl;
+ TREE_USED (length) = 1;
+ if (!f->sym->ts.cl->backend_decl)
+ f->sym->ts.cl->backend_decl = length;
+ else
+ {
+ /* there is already another variable using this
+ gfc_charlen node, build a new one for this variable
+ and chain it into the list of gfc_charlens.
+ This happens for e.g. in the case
+ CHARACTER(*)::c1,c2
+ since CHARACTER declarations on the same line share
+ the same gfc_charlen node. */
+ gfc_charlen *cl;
- cl = gfc_get_charlen ();
- cl->backend_decl = length;
- cl->next = f->sym->ts.cl->next;
- f->sym->ts.cl->next = cl;
- f->sym->ts.cl = cl;
+ cl = gfc_get_charlen ();
+ cl->backend_decl = length;
+ cl->next = f->sym->ts.cl->next;
+ f->sym->ts.cl->next = cl;
+ f->sym->ts.cl = cl;
+ }
+ }
+
+ hidden_typelist = TREE_CHAIN (hidden_typelist);
+
+ if (f->sym->ts.cl->backend_decl == NULL
+ || f->sym->ts.cl->backend_decl == length)
+ {
+ if (f->sym->ts.cl->backend_decl == NULL)
+ gfc_create_string_length (f->sym);
+
+ /* Make sure PARM_DECL type doesn't point to incomplete type. */
+ if (f->sym->attr.flavor == FL_PROCEDURE)
+ type = build_pointer_type (gfc_get_function_type (f->sym));
+ else
+ type = gfc_sym_type (f->sym);
}
}
- parm = TREE_CHAIN (parm);
+ /* For non-constant length array arguments, make sure they use
+ a different type node from TYPE_ARG_TYPES type. */
+ if (f->sym->attr.dimension
+ && type == TREE_VALUE (typelist)
+ && TREE_CODE (type) == POINTER_TYPE
+ && GFC_ARRAY_TYPE_P (type)
+ && f->sym->as->type != AS_ASSUMED_SIZE
+ && ! COMPLETE_TYPE_P (TREE_TYPE (type)))
+ {
+ if (f->sym->attr.flavor == FL_PROCEDURE)
+ type = build_pointer_type (gfc_get_function_type (f->sym));
+ else
+ type = gfc_sym_type (f->sym);
+ }
+
+ /* Build a the argument declaration. */
+ parm = build_decl (PARM_DECL, gfc_sym_identifier (f->sym), type);
+
+ /* Fill in arg stuff. */
+ DECL_CONTEXT (parm) = fndecl;
+ DECL_ARG_TYPE (parm) = TREE_VALUE (typelist);
+ /* All implementation args are read-only. */
+ TREE_READONLY (parm) = 1;
+
+ gfc_finish_decl (parm);
+
+ f->sym->backend_decl = parm;
+
+ arglist = chainon (arglist, parm);
typelist = TREE_CHAIN (typelist);
}
- gcc_assert (TREE_VALUE (typelist) == void_type_node);
+ /* Add the hidden string length parameters. */
+ arglist = chainon (arglist, hidden_arglist);
+
+ gcc_assert (hidden_typelist == NULL_TREE
+ || TREE_VALUE (hidden_typelist) == void_type_node);
DECL_ARGUMENTS (fndecl) = arglist;
}
gimplify_function_tree (fndecl);
dump_function (TDI_generic, fndecl);
+ /* Generate errors for structured block violations. */
+ /* ??? Could be done as part of resolve_labels. */
+ if (flag_openmp)
+ diagnose_omp_structured_block_errors (fndecl);
+
/* Convert all nested functions to GIMPLE now. We do things in this order
so that items like VLA sizes are expanded properly in the context of the
correct function. */
args = tree_cons (NULL_TREE, tmp, NULL_TREE);
string_args = NULL_TREE;
- /* TODO: Pass return by reference parameters. */
- if (ns->proc_name->attr.function)
- gfc_todo_error ("Functons with multiple entry points");
-
+ if (thunk_sym->attr.function)
+ {
+ if (gfc_return_by_reference (ns->proc_name))
+ {
+ tree ref = DECL_ARGUMENTS (current_function_decl);
+ args = tree_cons (NULL_TREE, ref, args);
+ if (ns->proc_name->ts.type == BT_CHARACTER)
+ args = tree_cons (NULL_TREE, TREE_CHAIN (ref),
+ args);
+ }
+ }
+
for (formal = ns->proc_name->formal; formal; formal = formal->next)
{
+ /* Ignore alternate returns. */
+ if (formal->sym == NULL)
+ continue;
+
/* We don't have a clever way of identifying arguments, so resort to
a brute-force search. */
for (thunk_formal = thunk_sym->formal;
if (thunk_formal)
{
/* Pass the argument. */
+ DECL_ARTIFICIAL (thunk_formal->sym->backend_decl) = 1;
args = tree_cons (NULL_TREE, thunk_formal->sym->backend_decl,
args);
if (formal->sym->ts.type == BT_CHARACTER)
args = tree_cons (NULL_TREE, null_pointer_node, args);
if (formal->sym->ts.type == BT_CHARACTER)
{
- tmp = convert (gfc_charlen_type_node, integer_zero_node);
+ tmp = build_int_cst (gfc_charlen_type_node, 0);
string_args = tree_cons (NULL_TREE, tmp, string_args);
}
}
args = nreverse (args);
args = chainon (args, nreverse (string_args));
tmp = ns->proc_name->backend_decl;
- tmp = gfc_build_function_call (tmp, args);
- /* TODO: function return value. */
+ tmp = build_function_call_expr (tmp, args);
+ if (ns->proc_name->attr.mixed_entry_master)
+ {
+ tree union_decl, field;
+ tree master_type = TREE_TYPE (ns->proc_name->backend_decl);
+
+ union_decl = build_decl (VAR_DECL, get_identifier ("__result"),
+ TREE_TYPE (master_type));
+ DECL_ARTIFICIAL (union_decl) = 1;
+ DECL_EXTERNAL (union_decl) = 0;
+ TREE_PUBLIC (union_decl) = 0;
+ TREE_USED (union_decl) = 1;
+ layout_decl (union_decl, 0);
+ pushdecl (union_decl);
+
+ DECL_CONTEXT (union_decl) = current_function_decl;
+ tmp = build2 (MODIFY_EXPR,
+ TREE_TYPE (union_decl),
+ union_decl, tmp);
+ gfc_add_expr_to_block (&body, tmp);
+
+ for (field = TYPE_FIELDS (TREE_TYPE (union_decl));
+ field; field = TREE_CHAIN (field))
+ if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)),
+ thunk_sym->result->name) == 0)
+ break;
+ gcc_assert (field != NULL_TREE);
+ tmp = build3 (COMPONENT_REF, TREE_TYPE (field), union_decl, field,
+ NULL_TREE);
+ tmp = build2 (MODIFY_EXPR,
+ TREE_TYPE (DECL_RESULT (current_function_decl)),
+ DECL_RESULT (current_function_decl), tmp);
+ tmp = build1_v (RETURN_EXPR, tmp);
+ }
+ else if (TREE_TYPE (DECL_RESULT (current_function_decl))
+ != void_type_node)
+ {
+ tmp = build2 (MODIFY_EXPR,
+ TREE_TYPE (DECL_RESULT (current_function_decl)),
+ DECL_RESULT (current_function_decl), tmp);
+ tmp = build1_v (RETURN_EXPR, tmp);
+ }
gfc_add_expr_to_block (&body, tmp);
/* Finish off this function and send it for code generation. */
points and the master function. Clear them so that they are
recreated for each function. */
for (formal = thunk_sym->formal; formal; formal = formal->next)
+ if (formal->sym != NULL) /* Ignore alternate returns. */
+ {
+ formal->sym->backend_decl = NULL_TREE;
+ if (formal->sym->ts.type == BT_CHARACTER)
+ formal->sym->ts.cl->backend_decl = NULL_TREE;
+ }
+
+ if (thunk_sym->attr.function)
{
- formal->sym->backend_decl = NULL_TREE;
- if (formal->sym->ts.type == BT_CHARACTER)
- formal->sym->ts.cl->backend_decl = NULL_TREE;
+ if (thunk_sym->ts.type == BT_CHARACTER)
+ thunk_sym->ts.cl->backend_decl = NULL_TREE;
+ if (thunk_sym->result->ts.type == BT_CHARACTER)
+ thunk_sym->result->ts.cl->backend_decl = NULL_TREE;
}
}
create_function_arglist (ns->proc_name);
}
-/* Return the decl used to hold the function return value. */
+/* Return the decl used to hold the function return value. If
+ parent_flag is set, the context is the parent_scope. */
tree
-gfc_get_fake_result_decl (gfc_symbol * sym)
+gfc_get_fake_result_decl (gfc_symbol * sym, int parent_flag)
{
tree decl;
tree length;
+ tree this_fake_result_decl;
+ tree this_function_decl;
char name[GFC_MAX_SYMBOL_LEN + 10];
- if (current_fake_result_decl != NULL_TREE)
- return current_fake_result_decl;
+ if (parent_flag)
+ {
+ this_fake_result_decl = parent_fake_result_decl;
+ this_function_decl = DECL_CONTEXT (current_function_decl);
+ }
+ else
+ {
+ this_fake_result_decl = current_fake_result_decl;
+ this_function_decl = current_function_decl;
+ }
+
+ if (sym
+ && sym->ns->proc_name->backend_decl == this_function_decl
+ && sym->ns->proc_name->attr.entry_master
+ && sym != sym->ns->proc_name)
+ {
+ tree t = NULL, var;
+ if (this_fake_result_decl != NULL)
+ for (t = TREE_CHAIN (this_fake_result_decl); t; t = TREE_CHAIN (t))
+ if (strcmp (IDENTIFIER_POINTER (TREE_PURPOSE (t)), sym->name) == 0)
+ break;
+ if (t)
+ return TREE_VALUE (t);
+ decl = gfc_get_fake_result_decl (sym->ns->proc_name, parent_flag);
+
+ if (parent_flag)
+ this_fake_result_decl = parent_fake_result_decl;
+ else
+ this_fake_result_decl = current_fake_result_decl;
+
+ if (decl && sym->ns->proc_name->attr.mixed_entry_master)
+ {
+ tree field;
+
+ for (field = TYPE_FIELDS (TREE_TYPE (decl));
+ field; field = TREE_CHAIN (field))
+ if (strcmp (IDENTIFIER_POINTER (DECL_NAME (field)),
+ sym->name) == 0)
+ break;
+
+ gcc_assert (field != NULL_TREE);
+ decl = build3 (COMPONENT_REF, TREE_TYPE (field), decl, field,
+ NULL_TREE);
+ }
+
+ var = create_tmp_var_raw (TREE_TYPE (decl), sym->name);
+ if (parent_flag)
+ gfc_add_decl_to_parent_function (var);
+ else
+ gfc_add_decl_to_function (var);
+
+ SET_DECL_VALUE_EXPR (var, decl);
+ DECL_HAS_VALUE_EXPR_P (var) = 1;
+ GFC_DECL_RESULT (var) = 1;
+
+ TREE_CHAIN (this_fake_result_decl)
+ = tree_cons (get_identifier (sym->name), var,
+ TREE_CHAIN (this_fake_result_decl));
+ return var;
+ }
+
+ if (this_fake_result_decl != NULL_TREE)
+ return TREE_VALUE (this_fake_result_decl);
/* Only when gfc_get_fake_result_decl is called by gfc_trans_return,
sym is NULL. */
if (!sym)
return NULL_TREE;
- if (sym->ts.type == BT_CHARACTER
- && !sym->ts.cl->backend_decl)
+ if (sym->ts.type == BT_CHARACTER)
{
- length = gfc_create_string_length (sym);
- gfc_finish_var_decl (length, sym);
+ if (sym->ts.cl->backend_decl == NULL_TREE)
+ length = gfc_create_string_length (sym);
+ else
+ length = sym->ts.cl->backend_decl;
+ if (TREE_CODE (length) == VAR_DECL
+ && DECL_CONTEXT (length) == NULL_TREE)
+ gfc_add_decl_to_function (length);
}
if (gfc_return_by_reference (sym))
{
- decl = DECL_ARGUMENTS (sym->backend_decl);
+ decl = DECL_ARGUMENTS (this_function_decl);
+
+ if (sym->ns->proc_name->backend_decl == this_function_decl
+ && sym->ns->proc_name->attr.entry_master)
+ decl = TREE_CHAIN (decl);
TREE_USED (decl) = 1;
if (sym->as)
else
{
sprintf (name, "__result_%.20s",
- IDENTIFIER_POINTER (DECL_NAME (current_function_decl)));
-
- decl = build_decl (VAR_DECL, get_identifier (name),
- TREE_TYPE (TREE_TYPE (current_function_decl)));
+ IDENTIFIER_POINTER (DECL_NAME (this_function_decl)));
+ if (!sym->attr.mixed_entry_master && sym->attr.function)
+ decl = build_decl (VAR_DECL, get_identifier (name),
+ gfc_sym_type (sym));
+ else
+ decl = build_decl (VAR_DECL, get_identifier (name),
+ TREE_TYPE (TREE_TYPE (this_function_decl)));
DECL_ARTIFICIAL (decl) = 1;
DECL_EXTERNAL (decl) = 0;
TREE_PUBLIC (decl) = 0;
TREE_USED (decl) = 1;
+ GFC_DECL_RESULT (decl) = 1;
+ TREE_ADDRESSABLE (decl) = 1;
layout_decl (decl, 0);
- gfc_add_decl_to_function (decl);
+ if (parent_flag)
+ gfc_add_decl_to_parent_function (decl);
+ else
+ gfc_add_decl_to_function (decl);
}
- current_fake_result_decl = decl;
+ if (parent_flag)
+ parent_fake_result_decl = build_tree_list (NULL, decl);
+ else
+ current_fake_result_decl = build_tree_list (NULL, decl);
return decl;
}
{
tree gfc_int4_type_node = gfc_get_int_type (4);
tree gfc_int8_type_node = gfc_get_int_type (8);
+ tree gfc_int16_type_node = gfc_get_int_type (16);
tree gfc_logical4_type_node = gfc_get_logical_type (4);
tree gfc_real4_type_node = gfc_get_real_type (4);
tree gfc_real8_type_node = gfc_get_real_type (8);
+ tree gfc_real10_type_node = gfc_get_real_type (10);
+ tree gfc_real16_type_node = gfc_get_real_type (16);
tree gfc_complex4_type_node = gfc_get_complex_type (4);
tree gfc_complex8_type_node = gfc_get_complex_type (8);
+ tree gfc_complex10_type_node = gfc_get_complex_type (10);
+ tree gfc_complex16_type_node = gfc_get_complex_type (16);
+ tree gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind);
/* String functions. */
- gfor_fndecl_copy_string =
- gfc_build_library_function_decl (get_identifier (PREFIX("copy_string")),
- void_type_node,
- 4,
- gfc_charlen_type_node, pchar_type_node,
- gfc_charlen_type_node, pchar_type_node);
-
gfor_fndecl_compare_string =
gfc_build_library_function_decl (get_identifier (PREFIX("compare_string")),
gfc_int4_type_node,
gfc_charlen_type_node,
pchar_type_node);
- gfor_fndecl_string_repeat =
- gfc_build_library_function_decl (get_identifier (PREFIX("string_repeat")),
+ gfor_fndecl_ttynam =
+ gfc_build_library_function_decl (get_identifier (PREFIX("ttynam")),
void_type_node,
- 4,
+ 3,
pchar_type_node,
gfc_charlen_type_node,
+ gfc_c_int_type_node);
+
+ gfor_fndecl_fdate =
+ gfc_build_library_function_decl (get_identifier (PREFIX("fdate")),
+ void_type_node,
+ 2,
pchar_type_node,
- gfc_int4_type_node);
+ gfc_charlen_type_node);
+
+ gfor_fndecl_ctime =
+ gfc_build_library_function_decl (get_identifier (PREFIX("ctime")),
+ void_type_node,
+ 3,
+ pchar_type_node,
+ gfc_charlen_type_node,
+ gfc_int8_type_node);
gfor_fndecl_adjustl =
gfc_build_library_function_decl (get_identifier (PREFIX("adjustl")),
gfc_charlen_type_node, pchar_type_node);
gfor_fndecl_si_kind =
- gfc_build_library_function_decl (get_identifier ("selected_int_kind"),
+ gfc_build_library_function_decl (get_identifier
+ (PREFIX("selected_int_kind")),
gfc_int4_type_node,
1,
pvoid_type_node);
gfor_fndecl_sr_kind =
- gfc_build_library_function_decl (get_identifier ("selected_real_kind"),
+ gfc_build_library_function_decl (get_identifier
+ (PREFIX("selected_real_kind")),
gfc_int4_type_node,
2, pvoid_type_node,
pvoid_type_node);
/* Power functions. */
{
- tree type;
- tree itype;
- int kind;
- int ikind;
- static int kinds[2] = {4, 8};
- char name[PREFIX_LEN + 10]; /* _gfortran_pow_?n_?n */
-
- for (ikind=0; ikind < 2; ikind++)
+ tree ctype, rtype, itype, jtype;
+ int rkind, ikind, jkind;
+#define NIKINDS 3
+#define NRKINDS 4
+ static int ikinds[NIKINDS] = {4, 8, 16};
+ static int rkinds[NRKINDS] = {4, 8, 10, 16};
+ char name[PREFIX_LEN + 12]; /* _gfortran_pow_?n_?n */
+
+ for (ikind=0; ikind < NIKINDS; ikind++)
{
- itype = gfc_get_int_type (kinds[ikind]);
- for (kind = 0; kind < 2; kind ++)
+ itype = gfc_get_int_type (ikinds[ikind]);
+
+ for (jkind=0; jkind < NIKINDS; jkind++)
+ {
+ jtype = gfc_get_int_type (ikinds[jkind]);
+ if (itype && jtype)
+ {
+ sprintf(name, PREFIX("pow_i%d_i%d"), ikinds[ikind],
+ ikinds[jkind]);
+ gfor_fndecl_math_powi[jkind][ikind].integer =
+ gfc_build_library_function_decl (get_identifier (name),
+ jtype, 2, jtype, itype);
+ TREE_READONLY (gfor_fndecl_math_powi[jkind][ikind].integer) = 1;
+ }
+ }
+
+ for (rkind = 0; rkind < NRKINDS; rkind ++)
{
- type = gfc_get_int_type (kinds[kind]);
- sprintf(name, PREFIX("pow_i%d_i%d"), kinds[kind], kinds[ikind]);
- gfor_fndecl_math_powi[kind][ikind].integer =
- gfc_build_library_function_decl (get_identifier (name),
- type, 2, type, itype);
-
- type = gfc_get_real_type (kinds[kind]);
- sprintf(name, PREFIX("pow_r%d_i%d"), kinds[kind], kinds[ikind]);
- gfor_fndecl_math_powi[kind][ikind].real =
- gfc_build_library_function_decl (get_identifier (name),
- type, 2, type, itype);
-
- type = gfc_get_complex_type (kinds[kind]);
- sprintf(name, PREFIX("pow_c%d_i%d"), kinds[kind], kinds[ikind]);
- gfor_fndecl_math_powi[kind][ikind].cmplx =
- gfc_build_library_function_decl (get_identifier (name),
- type, 2, type, itype);
+ rtype = gfc_get_real_type (rkinds[rkind]);
+ if (rtype && itype)
+ {
+ sprintf(name, PREFIX("pow_r%d_i%d"), rkinds[rkind],
+ ikinds[ikind]);
+ gfor_fndecl_math_powi[rkind][ikind].real =
+ gfc_build_library_function_decl (get_identifier (name),
+ rtype, 2, rtype, itype);
+ TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].real) = 1;
+ }
+
+ ctype = gfc_get_complex_type (rkinds[rkind]);
+ if (ctype && itype)
+ {
+ sprintf(name, PREFIX("pow_c%d_i%d"), rkinds[rkind],
+ ikinds[ikind]);
+ gfor_fndecl_math_powi[rkind][ikind].cmplx =
+ gfc_build_library_function_decl (get_identifier (name),
+ ctype, 2,ctype, itype);
+ TREE_READONLY (gfor_fndecl_math_powi[rkind][ikind].cmplx) = 1;
+ }
}
}
+#undef NIKINDS
+#undef NRKINDS
}
gfor_fndecl_math_cpowf =
gfc_build_library_function_decl (get_identifier ("cpow"),
gfc_complex8_type_node,
1, gfc_complex8_type_node);
+ if (gfc_complex10_type_node)
+ gfor_fndecl_math_cpowl10 =
+ gfc_build_library_function_decl (get_identifier ("cpowl"),
+ gfc_complex10_type_node, 1,
+ gfc_complex10_type_node);
+ if (gfc_complex16_type_node)
+ gfor_fndecl_math_cpowl16 =
+ gfc_build_library_function_decl (get_identifier ("cpowl"),
+ gfc_complex16_type_node, 1,
+ gfc_complex16_type_node);
+
gfor_fndecl_math_ishftc4 =
gfc_build_library_function_decl (get_identifier (PREFIX("ishftc4")),
gfc_int4_type_node,
gfc_build_library_function_decl (get_identifier (PREFIX("ishftc8")),
gfc_int8_type_node,
3, gfc_int8_type_node,
- gfc_int8_type_node, gfc_int8_type_node);
+ gfc_int4_type_node, gfc_int4_type_node);
+ if (gfc_int16_type_node)
+ gfor_fndecl_math_ishftc16 =
+ gfc_build_library_function_decl (get_identifier (PREFIX("ishftc16")),
+ gfc_int16_type_node, 3,
+ gfc_int16_type_node,
+ gfc_int4_type_node,
+ gfc_int4_type_node);
+
gfor_fndecl_math_exponent4 =
gfc_build_library_function_decl (get_identifier (PREFIX("exponent_r4")),
gfc_int4_type_node,
gfc_build_library_function_decl (get_identifier (PREFIX("exponent_r8")),
gfc_int4_type_node,
1, gfc_real8_type_node);
+ if (gfc_real10_type_node)
+ gfor_fndecl_math_exponent10 =
+ gfc_build_library_function_decl (get_identifier (PREFIX("exponent_r10")),
+ gfc_int4_type_node, 1,
+ gfc_real10_type_node);
+ if (gfc_real16_type_node)
+ gfor_fndecl_math_exponent16 =
+ gfc_build_library_function_decl (get_identifier (PREFIX("exponent_r16")),
+ gfc_int4_type_node, 1,
+ gfc_real16_type_node);
+
+ /* BLAS functions. */
+ {
+ tree pint = build_pointer_type (gfc_c_int_type_node);
+ tree ps = build_pointer_type (gfc_get_real_type (gfc_default_real_kind));
+ tree pd = build_pointer_type (gfc_get_real_type (gfc_default_double_kind));
+ tree pc = build_pointer_type (gfc_get_complex_type (gfc_default_real_kind));
+ tree pz = build_pointer_type
+ (gfc_get_complex_type (gfc_default_double_kind));
+
+ gfor_fndecl_sgemm = gfc_build_library_function_decl
+ (get_identifier
+ (gfc_option.flag_underscoring ? "sgemm_"
+ : "sgemm"),
+ void_type_node, 15, pchar_type_node,
+ pchar_type_node, pint, pint, pint, ps, ps, pint,
+ ps, pint, ps, ps, pint, gfc_c_int_type_node,
+ gfc_c_int_type_node);
+ gfor_fndecl_dgemm = gfc_build_library_function_decl
+ (get_identifier
+ (gfc_option.flag_underscoring ? "dgemm_"
+ : "dgemm"),
+ void_type_node, 15, pchar_type_node,
+ pchar_type_node, pint, pint, pint, pd, pd, pint,
+ pd, pint, pd, pd, pint, gfc_c_int_type_node,
+ gfc_c_int_type_node);
+ gfor_fndecl_cgemm = gfc_build_library_function_decl
+ (get_identifier
+ (gfc_option.flag_underscoring ? "cgemm_"
+ : "cgemm"),
+ void_type_node, 15, pchar_type_node,
+ pchar_type_node, pint, pint, pint, pc, pc, pint,
+ pc, pint, pc, pc, pint, gfc_c_int_type_node,
+ gfc_c_int_type_node);
+ gfor_fndecl_zgemm = gfc_build_library_function_decl
+ (get_identifier
+ (gfc_option.flag_underscoring ? "zgemm_"
+ : "zgemm"),
+ void_type_node, 15, pchar_type_node,
+ pchar_type_node, pint, pint, pint, pz, pz, pint,
+ pz, pint, pz, pz, pint, gfc_c_int_type_node,
+ gfc_c_int_type_node);
+ }
/* Other functions. */
gfor_fndecl_size0 =
void
gfc_build_builtin_function_decls (void)
{
+ tree gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind);
tree gfc_int4_type_node = gfc_get_int_type (4);
tree gfc_int8_type_node = gfc_get_int_type (8);
tree gfc_logical4_type_node = gfc_get_logical_type (4);
+ tree gfc_pint4_type_node = build_pointer_type (gfc_int4_type_node);
- gfor_fndecl_internal_malloc =
- gfc_build_library_function_decl (get_identifier (PREFIX("internal_malloc")),
- pvoid_type_node, 1, gfc_int4_type_node);
-
- gfor_fndecl_internal_malloc64 =
+ gfor_fndecl_internal_realloc =
gfc_build_library_function_decl (get_identifier
- (PREFIX("internal_malloc64")),
- pvoid_type_node, 1, gfc_int8_type_node);
+ (PREFIX("internal_realloc")),
+ pvoid_type_node, 2, pvoid_type_node,
+ gfc_int4_type_node);
- gfor_fndecl_internal_free =
- gfc_build_library_function_decl (get_identifier (PREFIX("internal_free")),
- void_type_node, 1, pvoid_type_node);
+ gfor_fndecl_internal_realloc64 =
+ gfc_build_library_function_decl (get_identifier
+ (PREFIX("internal_realloc64")),
+ pvoid_type_node, 2, pvoid_type_node,
+ gfc_int8_type_node);
gfor_fndecl_allocate =
gfc_build_library_function_decl (get_identifier (PREFIX("allocate")),
- void_type_node, 2, ppvoid_type_node,
- gfc_int4_type_node);
+ pvoid_type_node, 2,
+ gfc_int4_type_node, gfc_pint4_type_node);
+ DECL_IS_MALLOC (gfor_fndecl_allocate) = 1;
gfor_fndecl_allocate64 =
gfc_build_library_function_decl (get_identifier (PREFIX("allocate64")),
- void_type_node, 2, ppvoid_type_node,
- gfc_int8_type_node);
+ pvoid_type_node, 2,
+ gfc_int8_type_node, gfc_pint4_type_node);
+ DECL_IS_MALLOC (gfor_fndecl_allocate64) = 1;
+
+ gfor_fndecl_allocate_array =
+ gfc_build_library_function_decl (get_identifier (PREFIX("allocate_array")),
+ pvoid_type_node, 3, pvoid_type_node,
+ gfc_int4_type_node, gfc_pint4_type_node);
+ DECL_IS_MALLOC (gfor_fndecl_allocate_array) = 1;
+
+ gfor_fndecl_allocate64_array =
+ gfc_build_library_function_decl (get_identifier (PREFIX("allocate64_array")),
+ pvoid_type_node, 3, pvoid_type_node,
+ gfc_int8_type_node, gfc_pint4_type_node);
+ DECL_IS_MALLOC (gfor_fndecl_allocate64_array) = 1;
gfor_fndecl_deallocate =
gfc_build_library_function_decl (get_identifier (PREFIX("deallocate")),
- void_type_node, 1, ppvoid_type_node);
+ void_type_node, 2, pvoid_type_node,
+ gfc_pint4_type_node);
gfor_fndecl_stop_numeric =
gfc_build_library_function_decl (get_identifier (PREFIX("stop_numeric")),
void_type_node, 1, gfc_int4_type_node);
+ /* Stop doesn't return. */
+ TREE_THIS_VOLATILE (gfor_fndecl_stop_numeric) = 1;
+
gfor_fndecl_stop_string =
gfc_build_library_function_decl (get_identifier (PREFIX("stop_string")),
void_type_node, 2, pchar_type_node,
gfc_int4_type_node);
+ /* Stop doesn't return. */
+ TREE_THIS_VOLATILE (gfor_fndecl_stop_string) = 1;
gfor_fndecl_pause_numeric =
gfc_build_library_function_decl (get_identifier (PREFIX("pause_numeric")),
gfor_fndecl_runtime_error =
gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error")),
- void_type_node,
- 3,
- pchar_type_node, pchar_type_node,
- gfc_int4_type_node);
+ void_type_node, 1, pchar_type_node);
+ /* The runtime_error function does not return. */
+ TREE_THIS_VOLATILE (gfor_fndecl_runtime_error) = 1;
+
+ gfor_fndecl_runtime_error_at =
+ gfc_build_library_function_decl (get_identifier (PREFIX("runtime_error_at")),
+ void_type_node, 2, pchar_type_node,
+ pchar_type_node);
+ /* The runtime_error_at function does not return. */
+ TREE_THIS_VOLATILE (gfor_fndecl_runtime_error_at) = 1;
+
+ gfor_fndecl_generate_error =
+ gfc_build_library_function_decl (get_identifier (PREFIX("generate_error")),
+ void_type_node, 3, pvoid_type_node,
+ gfc_c_int_type_node, pchar_type_node);
+
+ gfor_fndecl_os_error =
+ gfc_build_library_function_decl (get_identifier (PREFIX("os_error")),
+ void_type_node, 1, pchar_type_node);
+ /* The runtime_error function does not return. */
+ TREE_THIS_VOLATILE (gfor_fndecl_os_error) = 1;
+
+ gfor_fndecl_set_fpe =
+ gfc_build_library_function_decl (get_identifier (PREFIX("set_fpe")),
+ void_type_node, 1, gfc_c_int_type_node);
+
+ gfor_fndecl_set_std =
+ gfc_build_library_function_decl (get_identifier (PREFIX("set_std")),
+ void_type_node,
+ 5,
+ gfc_int4_type_node,
+ gfc_int4_type_node,
+ gfc_int4_type_node,
+ gfc_int4_type_node,
+ gfc_int4_type_node);
+
+ gfor_fndecl_set_convert =
+ gfc_build_library_function_decl (get_identifier (PREFIX("set_convert")),
+ void_type_node, 1, gfc_c_int_type_node);
+
+ gfor_fndecl_set_record_marker =
+ gfc_build_library_function_decl (get_identifier (PREFIX("set_record_marker")),
+ void_type_node, 1, gfc_c_int_type_node);
+
+ gfor_fndecl_set_max_subrecord_length =
+ gfc_build_library_function_decl (get_identifier (PREFIX("set_max_subrecord_length")),
+ void_type_node, 1, gfc_c_int_type_node);
gfor_fndecl_in_pack = gfc_build_library_function_decl (
get_identifier (PREFIX("internal_pack")),
/* Evaluate the length of dummy character variables. */
static tree
-gfc_trans_dummy_character (gfc_charlen * cl, tree fnbody)
+gfc_trans_dummy_character (gfc_symbol *sym, gfc_charlen *cl, tree fnbody)
{
stmtblock_t body;
- gfc_finish_decl (cl->backend_decl, NULL_TREE);
+ gfc_finish_decl (cl->backend_decl);
gfc_start_block (&body);
/* Evaluate the string length expression. */
gfc_trans_init_string_length (cl, &body);
-
+
+ gfc_trans_vla_type_sizes (sym, &body);
+
gfc_add_expr_to_block (&body, fnbody);
return gfc_finish_block (&body);
}
/* Evaluate the string length expression. */
gfc_trans_init_string_length (sym->ts.cl, &body);
+ gfc_trans_vla_type_sizes (sym, &body);
+
decl = sym->backend_decl;
/* Emit a DECL_EXPR for this variable, which will cause the
return gfc_finish_block (&body);
}
+/* Set the initial value of ASSIGN statement auxiliary variable explicitly. */
+
+static tree
+gfc_trans_assign_aux_var (gfc_symbol * sym, tree fnbody)
+{
+ stmtblock_t body;
+
+ gcc_assert (sym->backend_decl);
+ gfc_start_block (&body);
+
+ /* Set the initial value to length. See the comments in
+ function gfc_add_assign_aux_vars in this file. */
+ gfc_add_modify_expr (&body, GFC_DECL_STRING_LEN (sym->backend_decl),
+ build_int_cst (NULL_TREE, -2));
+
+ gfc_add_expr_to_block (&body, fnbody);
+ return gfc_finish_block (&body);
+}
+
+static void
+gfc_trans_vla_one_sizepos (tree *tp, stmtblock_t *body)
+{
+ tree t = *tp, var, val;
+
+ if (t == NULL || t == error_mark_node)
+ return;
+ if (TREE_CONSTANT (t) || DECL_P (t))
+ return;
+
+ if (TREE_CODE (t) == SAVE_EXPR)
+ {
+ if (SAVE_EXPR_RESOLVED_P (t))
+ {
+ *tp = TREE_OPERAND (t, 0);
+ return;
+ }
+ val = TREE_OPERAND (t, 0);
+ }
+ else
+ val = t;
+
+ var = gfc_create_var_np (TREE_TYPE (t), NULL);
+ gfc_add_decl_to_function (var);
+ gfc_add_modify_expr (body, var, val);
+ if (TREE_CODE (t) == SAVE_EXPR)
+ TREE_OPERAND (t, 0) = var;
+ *tp = var;
+}
+
+static void
+gfc_trans_vla_type_sizes_1 (tree type, stmtblock_t *body)
+{
+ tree t;
+
+ if (type == NULL || type == error_mark_node)
+ return;
+
+ type = TYPE_MAIN_VARIANT (type);
+
+ if (TREE_CODE (type) == INTEGER_TYPE)
+ {
+ gfc_trans_vla_one_sizepos (&TYPE_MIN_VALUE (type), body);
+ gfc_trans_vla_one_sizepos (&TYPE_MAX_VALUE (type), body);
+
+ for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
+ {
+ TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (type);
+ TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (type);
+ }
+ }
+ else if (TREE_CODE (type) == ARRAY_TYPE)
+ {
+ gfc_trans_vla_type_sizes_1 (TREE_TYPE (type), body);
+ gfc_trans_vla_type_sizes_1 (TYPE_DOMAIN (type), body);
+ gfc_trans_vla_one_sizepos (&TYPE_SIZE (type), body);
+ gfc_trans_vla_one_sizepos (&TYPE_SIZE_UNIT (type), body);
+
+ for (t = TYPE_NEXT_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
+ {
+ TYPE_SIZE (t) = TYPE_SIZE (type);
+ TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (type);
+ }
+ }
+}
+
+/* Make sure all type sizes and array domains are either constant,
+ or variable or parameter decls. This is a simplified variant
+ of gimplify_type_sizes, but we can't use it here, as none of the
+ variables in the expressions have been gimplified yet.
+ As type sizes and domains for various variable length arrays
+ contain VAR_DECLs that are only initialized at gfc_trans_deferred_vars
+ time, without this routine gimplify_type_sizes in the middle-end
+ could result in the type sizes being gimplified earlier than where
+ those variables are initialized. */
+
+void
+gfc_trans_vla_type_sizes (gfc_symbol *sym, stmtblock_t *body)
+{
+ tree type = TREE_TYPE (sym->backend_decl);
+
+ if (TREE_CODE (type) == FUNCTION_TYPE
+ && (sym->attr.function || sym->attr.result || sym->attr.entry))
+ {
+ if (! current_fake_result_decl)
+ return;
+
+ type = TREE_TYPE (TREE_VALUE (current_fake_result_decl));
+ }
+
+ while (POINTER_TYPE_P (type))
+ type = TREE_TYPE (type);
+
+ if (GFC_DESCRIPTOR_TYPE_P (type))
+ {
+ tree etype = GFC_TYPE_ARRAY_DATAPTR_TYPE (type);
+
+ while (POINTER_TYPE_P (etype))
+ etype = TREE_TYPE (etype);
+
+ gfc_trans_vla_type_sizes_1 (etype, body);
+ }
+
+ gfc_trans_vla_type_sizes_1 (type, body);
+}
+
/* Generate function entry and exit code, and add it to the function body.
This includes:
Allocation and initialization of array variables.
Allocation of character string variables.
- Initialization and possibly repacking of dummy arrays. */
+ Initialization and possibly repacking of dummy arrays.
+ Initialization of ASSIGN statement auxiliary variable. */
static tree
gfc_trans_deferred_vars (gfc_symbol * proc_sym, tree fnbody)
{
locus loc;
gfc_symbol *sym;
+ gfc_formal_arglist *f;
+ stmtblock_t body;
+ bool seen_trans_deferred_array = false;
/* Deal with implicit return variables. Explicit return variables will
already have been added. */
{
if (!current_fake_result_decl)
{
- warning ("Function does not return a value");
- return fnbody;
+ gfc_entry_list *el = NULL;
+ if (proc_sym->attr.entry_master)
+ {
+ for (el = proc_sym->ns->entries; el; el = el->next)
+ if (el->sym != el->sym->result)
+ break;
+ }
+ if (el == NULL)
+ warning (0, "Function does not return a value");
}
-
- if (proc_sym->as)
+ else if (proc_sym->as)
{
- fnbody = gfc_trans_dummy_array_bias (proc_sym,
- current_fake_result_decl,
- fnbody);
+ tree result = TREE_VALUE (current_fake_result_decl);
+ fnbody = gfc_trans_dummy_array_bias (proc_sym, result, fnbody);
+
+ /* An automatic character length, pointer array result. */
+ if (proc_sym->ts.type == BT_CHARACTER
+ && TREE_CODE (proc_sym->ts.cl->backend_decl) == VAR_DECL)
+ fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.cl,
+ fnbody);
}
else if (proc_sym->ts.type == BT_CHARACTER)
{
if (TREE_CODE (proc_sym->ts.cl->backend_decl) == VAR_DECL)
- fnbody = gfc_trans_dummy_character (proc_sym->ts.cl, fnbody);
+ fnbody = gfc_trans_dummy_character (proc_sym, proc_sym->ts.cl,
+ fnbody);
}
else
- gfc_todo_error ("Deferred non-array return by reference");
+ gcc_assert (gfc_option.flag_f2c
+ && proc_sym->ts.type == BT_COMPLEX);
}
for (sym = proc_sym->tlink; sym != proc_sym; sym = sym->tlink)
{
+ bool sym_has_alloc_comp = (sym->ts.type == BT_DERIVED)
+ && sym->ts.derived->attr.alloc_comp;
if (sym->attr.dimension)
{
switch (sym->as->type)
if (TREE_STATIC (sym->backend_decl))
gfc_trans_static_array_pointer (sym);
else
- fnbody = gfc_trans_deferred_array (sym, fnbody);
+ {
+ seen_trans_deferred_array = true;
+ fnbody = gfc_trans_deferred_array (sym, fnbody);
+ }
}
else
{
+ if (sym_has_alloc_comp)
+ {
+ seen_trans_deferred_array = true;
+ fnbody = gfc_trans_deferred_array (sym, fnbody);
+ }
+
gfc_get_backend_locus (&loc);
gfc_set_backend_locus (&sym->declared_at);
fnbody = gfc_trans_auto_array_allocation (sym->backend_decl,
break;
case AS_DEFERRED:
+ seen_trans_deferred_array = true;
fnbody = gfc_trans_deferred_array (sym, fnbody);
break;
default:
gcc_unreachable ();
}
+ if (sym_has_alloc_comp && !seen_trans_deferred_array)
+ fnbody = gfc_trans_deferred_array (sym, fnbody);
}
+ else if (sym_has_alloc_comp)
+ fnbody = gfc_trans_deferred_array (sym, fnbody);
else if (sym->ts.type == BT_CHARACTER)
{
gfc_get_backend_locus (&loc);
gfc_set_backend_locus (&sym->declared_at);
if (sym->attr.dummy || sym->attr.result)
- fnbody = gfc_trans_dummy_character (sym->ts.cl, fnbody);
+ fnbody = gfc_trans_dummy_character (sym, sym->ts.cl, fnbody);
else
fnbody = gfc_trans_auto_character_variable (sym, fnbody);
gfc_set_backend_locus (&loc);
}
+ else if (sym->attr.assign)
+ {
+ gfc_get_backend_locus (&loc);
+ gfc_set_backend_locus (&sym->declared_at);
+ fnbody = gfc_trans_assign_aux_var (sym, fnbody);
+ gfc_set_backend_locus (&loc);
+ }
else
gcc_unreachable ();
}
- return fnbody;
+ gfc_init_block (&body);
+
+ for (f = proc_sym->formal; f; f = f->next)
+ if (f->sym && f->sym->tlink == NULL && f->sym->ts.type == BT_CHARACTER)
+ {
+ gcc_assert (f->sym->ts.cl->backend_decl != NULL);
+ if (TREE_CODE (f->sym->ts.cl->backend_decl) == PARM_DECL)
+ gfc_trans_vla_type_sizes (f->sym, &body);
+ }
+
+ if (gfc_return_by_reference (proc_sym) && proc_sym->ts.type == BT_CHARACTER
+ && current_fake_result_decl != NULL)
+ {
+ gcc_assert (proc_sym->ts.cl->backend_decl != NULL);
+ if (TREE_CODE (proc_sym->ts.cl->backend_decl) == PARM_DECL)
+ gfc_trans_vla_type_sizes (proc_sym, &body);
+ }
+
+ gfc_add_expr_to_block (&body, fnbody);
+ return gfc_finish_block (&body);
}
{
tree decl;
- /* Only output symbols from this module. */
- if (sym->ns != module_namespace)
- {
- /* I don't think this should ever happen. */
- internal_error ("module symbol %s in wrong namespace", sym->name);
- }
+ /* Module functions with alternate entries are dealt with later and
+ would get caught by the next condition. */
+ if (sym->attr.entry)
+ return;
- /* Only output variables and array valued parametes. */
+ /* Only output variables and array valued parameters. */
if (sym->attr.flavor != FL_VARIABLE
&& (sym->attr.flavor != FL_PARAMETER || sym->attr.dimension == 0))
return;
if (sym->attr.use_assoc || sym->attr.in_common)
return;
+ /* Equivalenced variables arrive here after creation. */
+ if (sym->backend_decl
+ && (sym->equiv_built || sym->attr.in_equivalence))
+ return;
+
if (sym->backend_decl)
internal_error ("backend decl for module variable %s already exists",
sym->name);
}
+/* Drill down through expressions for the array specification bounds and
+ character length calling generate_local_decl for all those variables
+ that have not already been declared. */
+
+static void
+generate_local_decl (gfc_symbol *);
+
+static void
+generate_expr_decls (gfc_symbol *sym, gfc_expr *e)
+{
+ gfc_actual_arglist *arg;
+ gfc_ref *ref;
+ int i;
+
+ if (e == NULL)
+ return;
+
+ switch (e->expr_type)
+ {
+ case EXPR_FUNCTION:
+ for (arg = e->value.function.actual; arg; arg = arg->next)
+ generate_expr_decls (sym, arg->expr);
+ break;
+
+ /* If the variable is not the same as the dependent, 'sym', and
+ it is not marked as being declared and it is in the same
+ namespace as 'sym', add it to the local declarations. */
+ case EXPR_VARIABLE:
+ if (sym == e->symtree->n.sym
+ || e->symtree->n.sym->mark
+ || e->symtree->n.sym->ns != sym->ns)
+ return;
+
+ generate_local_decl (e->symtree->n.sym);
+ break;
+
+ case EXPR_OP:
+ generate_expr_decls (sym, e->value.op.op1);
+ generate_expr_decls (sym, e->value.op.op2);
+ break;
+
+ default:
+ break;
+ }
+
+ if (e->ref)
+ {
+ for (ref = e->ref; ref; ref = ref->next)
+ {
+ switch (ref->type)
+ {
+ case REF_ARRAY:
+ for (i = 0; i < ref->u.ar.dimen; i++)
+ {
+ generate_expr_decls (sym, ref->u.ar.start[i]);
+ generate_expr_decls (sym, ref->u.ar.end[i]);
+ generate_expr_decls (sym, ref->u.ar.stride[i]);
+ }
+ break;
+
+ case REF_SUBSTRING:
+ generate_expr_decls (sym, ref->u.ss.start);
+ generate_expr_decls (sym, ref->u.ss.end);
+ break;
+
+ case REF_COMPONENT:
+ if (ref->u.c.component->ts.type == BT_CHARACTER
+ && ref->u.c.component->ts.cl->length->expr_type
+ != EXPR_CONSTANT)
+ generate_expr_decls (sym, ref->u.c.component->ts.cl->length);
+
+ if (ref->u.c.component->as)
+ for (i = 0; i < ref->u.c.component->as->rank; i++)
+ {
+ generate_expr_decls (sym, ref->u.c.component->as->lower[i]);
+ generate_expr_decls (sym, ref->u.c.component->as->upper[i]);
+ }
+ break;
+ }
+ }
+ }
+}
+
+
+/* Check for dependencies in the character length and array spec. */
+
+static void
+generate_dependency_declarations (gfc_symbol *sym)
+{
+ int i;
+
+ if (sym->ts.type == BT_CHARACTER
+ && sym->ts.cl->length->expr_type != EXPR_CONSTANT)
+ generate_expr_decls (sym, sym->ts.cl->length);
+
+ if (sym->as && sym->as->rank)
+ {
+ for (i = 0; i < sym->as->rank; i++)
+ {
+ generate_expr_decls (sym, sym->as->lower[i]);
+ generate_expr_decls (sym, sym->as->upper[i]);
+ }
+ }
+}
+
+
/* Generate decls for all local variables. We do this to ensure correct
handling of expressions which only appear in the specification of
other functions. */
{
if (sym->attr.flavor == FL_VARIABLE)
{
+ /* Check for dependencies in the array specification and string
+ length, adding the necessary declarations to the function. We
+ mark the symbol now, as well as in traverse_ns, to prevent
+ getting stuck in a circular dependency. */
+ sym->mark = 1;
+ if (!sym->attr.dummy && !sym->ns->proc_name->attr.entry_master)
+ generate_dependency_declarations (sym);
+
if (sym->attr.referenced)
gfc_get_symbol_decl (sym);
else if (sym->attr.dummy && warn_unused_parameter)
- warning ("unused parameter `%s'", sym->name);
+ gfc_warning ("Unused parameter %s declared at %L", sym->name,
+ &sym->declared_at);
/* Warn for unused variables, but not if they're inside a common
block or are use-associated. */
else if (warn_unused_variable
&& !(sym->attr.in_common || sym->attr.use_assoc))
- warning ("unused variable `%s'", sym->name);
+ gfc_warning ("Unused variable %s declared at %L", sym->name,
+ &sym->declared_at);
+ /* For variable length CHARACTER parameters, the PARM_DECL already
+ references the length variable, so force gfc_get_symbol_decl
+ even when not referenced. If optimize > 0, it will be optimized
+ away anyway. But do this only after emitting -Wunused-parameter
+ warning if requested. */
+ if (sym->attr.dummy && ! sym->attr.referenced
+ && sym->ts.type == BT_CHARACTER
+ && sym->ts.cl->backend_decl != NULL
+ && TREE_CODE (sym->ts.cl->backend_decl) == VAR_DECL)
+ {
+ sym->attr.referenced = 1;
+ gfc_get_symbol_decl (sym);
+ }
}
}
for (; el; el = el->next)
{
/* Add the case label. */
- label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
- DECL_CONTEXT (label) = current_function_decl;
+ label = gfc_build_label_decl (NULL_TREE);
val = build_int_cst (gfc_array_index_type, el->id);
tmp = build3_v (CASE_LABEL_EXPR, val, NULL_TREE, label);
gfc_add_expr_to_block (&block, tmp);
/* And jump to the actual entry point. */
label = gfc_build_label_decl (NULL_TREE);
- TREE_USED (label) = 1;
- DECL_CONTEXT (label) = current_function_decl;
tmp = build1_v (GOTO_EXPR, label);
gfc_add_expr_to_block (&block, tmp);
tree old_context;
tree decl;
tree tmp;
+ tree tmp2;
stmtblock_t block;
stmtblock_t body;
tree result;
gfc_symbol *sym;
+ int rank;
sym = ns->proc_name;
trans_function_start (sym);
- /* Will be created as needed. */
- current_fake_result_decl = NULL_TREE;
-
gfc_start_block (&block);
- gfc_generate_contained_functions (ns);
+ if (ns->entries && ns->proc_name->ts.type == BT_CHARACTER)
+ {
+ /* Copy length backend_decls to all entry point result
+ symbols. */
+ gfc_entry_list *el;
+ tree backend_decl;
+
+ gfc_conv_const_charlen (ns->proc_name->ts.cl);
+ backend_decl = ns->proc_name->result->ts.cl->backend_decl;
+ for (el = ns->entries; el; el = el->next)
+ el->sym->result->ts.cl->backend_decl = backend_decl;
+ }
/* Translate COMMON blocks. */
gfc_trans_common (ns);
+ /* Null the parent fake result declaration if this namespace is
+ a module function or an external procedures. */
+ if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE)
+ || ns->parent == NULL)
+ parent_fake_result_decl = NULL_TREE;
+
+ gfc_generate_contained_functions (ns);
+
generate_local_vars (ns);
+
+ /* Keep the parent fake result declaration in module functions
+ or external procedures. */
+ if ((ns->parent && ns->parent->proc_name->attr.flavor == FL_MODULE)
+ || ns->parent == NULL)
+ current_fake_result_decl = parent_fake_result_decl;
+ else
+ current_fake_result_decl = NULL_TREE;
current_function_return_label = NULL;
/* Now generate the code for the body of this function. */
gfc_init_block (&body);
+ /* If this is the main program, add a call to set_std to set up the
+ runtime library Fortran language standard parameters. */
+
+ if (sym->attr.is_main_program)
+ {
+ tree gfc_int4_type_node = gfc_get_int_type (4);
+ tmp = build_call_expr (gfor_fndecl_set_std, 5,
+ build_int_cst (gfc_int4_type_node,
+ gfc_option.warn_std),
+ build_int_cst (gfc_int4_type_node,
+ gfc_option.allow_std),
+ build_int_cst (gfc_int4_type_node,
+ pedantic),
+ build_int_cst (gfc_int4_type_node,
+ gfc_option.flag_dump_core),
+ build_int_cst (gfc_int4_type_node,
+ gfc_option.flag_backtrace));
+ gfc_add_expr_to_block (&body, tmp);
+ }
+
+ /* If this is the main program and a -ffpe-trap option was provided,
+ add a call to set_fpe so that the library will raise a FPE when
+ needed. */
+ if (sym->attr.is_main_program && gfc_option.fpe != 0)
+ {
+ tree gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind);
+ tmp = build_call_expr (gfor_fndecl_set_fpe, 1,
+ build_int_cst (gfc_c_int_type_node,
+ gfc_option.fpe));
+ gfc_add_expr_to_block (&body, tmp);
+ }
+
+ /* If this is the main program and an -fconvert option was provided,
+ add a call to set_convert. */
+
+ if (sym->attr.is_main_program && gfc_option.convert != CONVERT_NATIVE)
+ {
+ tree gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind);
+ tmp = build_call_expr (gfor_fndecl_set_convert, 1,
+ build_int_cst (gfc_c_int_type_node,
+ gfc_option.convert));
+ gfc_add_expr_to_block (&body, tmp);
+ }
+
+ /* If this is the main program and an -frecord-marker option was provided,
+ add a call to set_record_marker. */
+
+ if (sym->attr.is_main_program && gfc_option.record_marker != 0)
+ {
+ tree gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind);
+ tmp = build_call_expr (gfor_fndecl_set_record_marker, 1,
+ build_int_cst (gfc_c_int_type_node,
+ gfc_option.record_marker));
+ gfc_add_expr_to_block (&body, tmp);
+ }
+
+ if (sym->attr.is_main_program && gfc_option.max_subrecord_length != 0)
+ {
+ tree gfc_c_int_type_node;
+
+ gfc_c_int_type_node = gfc_get_int_type (gfc_c_int_kind);
+ tmp = build_call_expr (gfor_fndecl_set_max_subrecord_length,
+ 1,
+ build_int_cst (gfc_c_int_type_node,
+ gfc_option.max_subrecord_length));
+ gfc_add_expr_to_block (&body, tmp);
+ }
+
if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node
&& sym->attr.subroutine)
{
tree alternate_return;
- alternate_return = gfc_get_fake_result_decl (sym);
+ alternate_return = gfc_get_fake_result_decl (sym, 0);
gfc_add_modify_expr (&body, alternate_return, integer_zero_node);
}
tmp = gfc_finish_block (&body);
/* Add code to create and cleanup arrays. */
tmp = gfc_trans_deferred_vars (sym, tmp);
- gfc_add_expr_to_block (&block, tmp);
if (TREE_TYPE (DECL_RESULT (fndecl)) != void_type_node)
{
if (sym->attr.subroutine || sym == sym->result)
{
- result = current_fake_result_decl;
+ if (current_fake_result_decl != NULL)
+ result = TREE_VALUE (current_fake_result_decl);
+ else
+ result = NULL_TREE;
current_fake_result_decl = NULL_TREE;
}
else
result = sym->result->backend_decl;
- if (result == NULL_TREE)
- warning ("Function return value not set");
+ if (result != NULL_TREE && sym->attr.function
+ && sym->ts.type == BT_DERIVED
+ && sym->ts.derived->attr.alloc_comp
+ && !sym->attr.pointer)
+ {
+ rank = sym->as ? sym->as->rank : 0;
+ tmp2 = gfc_nullify_alloc_comp (sym->ts.derived, result, rank);
+ gfc_add_expr_to_block (&block, tmp2);
+ }
+
+ gfc_add_expr_to_block (&block, tmp);
+
+ if (result == NULL_TREE)
+ warning (0, "Function return value not set");
else
{
- /* Set the return value to the dummy result variable. */
- tmp = build2 (MODIFY_EXPR, TREE_TYPE (result),
- DECL_RESULT (fndecl), result);
+ /* Set the return value to the dummy result variable. The
+ types may be different for scalar default REAL functions
+ with -ff2c, therefore we have to convert. */
+ tmp = convert (TREE_TYPE (DECL_RESULT (fndecl)), result);
+ tmp = build2 (MODIFY_EXPR, TREE_TYPE (tmp),
+ DECL_RESULT (fndecl), tmp);
tmp = build1_v (RETURN_EXPR, tmp);
gfc_add_expr_to_block (&block, tmp);
}
}
+ else
+ gfc_add_expr_to_block (&block, tmp);
+
/* Add all the decls we created during processing. */
decl = saved_function_decls;
if (gfc_static_ctors == NULL_TREE)
return;
- fnname = get_file_function_name ('I');
+ fnname = get_file_function_name ("I");
type = build_function_type (void_type_node,
gfc_chainon_list (NULL_TREE, void_type_node));
for (; gfc_static_ctors; gfc_static_ctors = TREE_CHAIN (gfc_static_ctors))
{
- tmp =
- gfc_build_function_call (TREE_VALUE (gfc_static_ctors), NULL_TREE);
+ tmp = build_call_expr (TREE_VALUE (gfc_static_ctors), 0);
DECL_SAVED_TREE (fndecl) = build_stmt (EXPR_STMT, tmp);
}
rest_of_decl_compilation (decl, 1, 0);
}
+
#include "gt-fortran-trans-decl.h"
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