/* Code translation -- generate GCC trees from gfc_code.
- Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
- Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
Contributed by Paul Brook
This file is part of GCC.
#include "system.h"
#include "coretypes.h"
#include "tree.h"
-#include "gimple.h"
+#include "gimple.h" /* For create_tmp_var_raw. */
#include "tree-iterator.h"
-#include "ggc.h"
#include "toplev.h"
#include "defaults.h"
-#include "real.h"
#include "flags.h"
#include "gfortran.h"
#include "trans.h"
static gfc_file *gfc_current_backend_file;
-const char gfc_msg_bounds[] = N_("Array bound mismatch");
const char gfc_msg_fault[] = N_("Array reference out of bounds");
const char gfc_msg_wrong_return[] = N_("Incorrect function return value");
tree tmp;
#ifdef ENABLE_CHECKING
+ tree t1, t2;
+ t1 = TREE_TYPE (rhs);
+ t2 = TREE_TYPE (lhs);
/* Make sure that the types of the rhs and the lhs are the same
for scalar assignments. We should probably have something
similar for aggregates, but right now removing that check just
breaks everything. */
- gcc_assert (TREE_TYPE (rhs) == TREE_TYPE (lhs)
+ gcc_assert (t1 == t2
|| AGGREGATE_TYPE_P (TREE_TYPE (lhs)));
#endif
expr = stmtblock->head;
if (!expr)
- expr = build_empty_stmt ();
+ expr = build_empty_stmt (input_location);
stmtblock->head = NULL_TREE;
}
else
{
- if (DECL_P (t))
- TREE_ADDRESSABLE (t) = 1;
+ tree base = get_base_address (t);
+ if (base && DECL_P (base))
+ TREE_ADDRESSABLE (base) = 1;
t = fold_build1 (ADDR_EXPR, natural_type, t);
}
tmp, fold_convert (sizetype, offset));
tmp = fold_convert (build_pointer_type (type), tmp);
if (!TYPE_STRING_FLAG (type))
- tmp = build_fold_indirect_ref (tmp);
+ tmp = build_fold_indirect_ref_loc (input_location, tmp);
return tmp;
}
else
va_end (ap);
/* Build the function call to runtime_(warning,error)_at; because of the
- variable number of arguments, we can't use build_call_expr directly. */
+ variable number of arguments, we can't use build_call_expr_loc dinput_location,
+ irectly. */
if (error)
fntype = TREE_TYPE (gfor_fndecl_runtime_error_at);
else
fntype = TREE_TYPE (gfor_fndecl_runtime_warning_at);
- tmp = fold_builtin_call_array (TREE_TYPE (fntype),
+ tmp = fold_builtin_call_array (input_location, TREE_TYPE (fntype),
fold_build1 (ADDR_EXPR,
build_pointer_type (fntype),
error
cond = fold_convert (long_integer_type_node, cond);
tmp = build_int_cst (long_integer_type_node, 0);
- cond = build_call_expr (built_in_decls[BUILT_IN_EXPECT], 2, cond, tmp);
+ cond = build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_EXPECT], 2, cond, tmp);
cond = fold_convert (boolean_type_node, cond);
- tmp = build3_v (COND_EXPR, cond, body, build_empty_stmt ());
+ tmp = build3_v (COND_EXPR, cond, body, build_empty_stmt (input_location));
gfc_add_expr_to_block (pblock, tmp);
}
}
/* Call malloc to allocate size bytes of memory, with special conditions:
- + if size < 0, generate a runtime error,
- + if size == 0, return a malloced area of size 1,
+ + if size <= 0, return a malloced area of size 1,
+ if malloc returns NULL, issue a runtime error. */
tree
gfc_call_malloc (stmtblock_t * block, tree type, tree size)
{
- tree tmp, msg, negative, malloc_result, null_result, res;
+ tree tmp, msg, malloc_result, null_result, res;
stmtblock_t block2;
size = gfc_evaluate_now (size, block);
size = fold_convert (size_type_node, size);
/* Create a variable to hold the result. */
- res = gfc_create_var (pvoid_type_node, NULL);
+ res = gfc_create_var (prvoid_type_node, NULL);
- /* size < 0 ? */
- negative = fold_build2 (LT_EXPR, boolean_type_node, size,
- build_int_cst (size_type_node, 0));
- msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const
- ("Attempt to allocate a negative amount of memory."));
- tmp = fold_build3 (COND_EXPR, void_type_node, negative,
- build_call_expr (gfor_fndecl_runtime_error, 1, msg),
- build_empty_stmt ());
- gfc_add_expr_to_block (block, tmp);
-
- /* Call malloc and check the result. */
+ /* Call malloc. */
gfc_start_block (&block2);
size = fold_build2 (MAX_EXPR, size_type_node, size,
build_int_cst (size_type_node, 1));
gfc_add_modify (&block2, res,
- build_call_expr (built_in_decls[BUILT_IN_MALLOC], 1,
- size));
- null_result = fold_build2 (EQ_EXPR, boolean_type_node, res,
- build_int_cst (pvoid_type_node, 0));
- msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const
- ("Memory allocation failed"));
- tmp = fold_build3 (COND_EXPR, void_type_node, null_result,
- build_call_expr (gfor_fndecl_os_error, 1, msg),
- build_empty_stmt ());
- gfc_add_expr_to_block (&block2, tmp);
+ fold_convert (prvoid_type_node,
+ build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_MALLOC], 1, size)));
+
+ /* Optionally check whether malloc was successful. */
+ if (gfc_option.rtcheck & GFC_RTCHECK_MEM)
+ {
+ null_result = fold_build2 (EQ_EXPR, boolean_type_node, res,
+ build_int_cst (pvoid_type_node, 0));
+ msg = gfc_build_addr_expr (pchar_type_node,
+ gfc_build_localized_cstring_const ("Memory allocation failed"));
+ tmp = fold_build3 (COND_EXPR, void_type_node, null_result,
+ build_call_expr_loc (input_location,
+ gfor_fndecl_os_error, 1, msg),
+ build_empty_stmt (input_location));
+ gfc_add_expr_to_block (&block2, tmp);
+ }
+
malloc_result = gfc_finish_block (&block2);
gfc_add_expr_to_block (block, malloc_result);
return res;
}
+
/* Allocate memory, using an optional status argument.
This function follows the following pseudo-code:
size = fold_convert (size_type_node, size);
/* Create a variable to hold the result. */
- res = gfc_create_var (pvoid_type_node, NULL);
+ res = gfc_create_var (prvoid_type_node, NULL);
/* Set the optional status variable to zero. */
if (status != NULL_TREE && !integer_zerop (status))
fold_build1 (INDIRECT_REF, status_type, status),
build_int_cst (status_type, 0));
tmp = fold_build3 (COND_EXPR, void_type_node,
- fold_build2 (NE_EXPR, boolean_type_node,
- status, build_int_cst (status_type, 0)),
- tmp, build_empty_stmt ());
+ fold_build2 (NE_EXPR, boolean_type_node, status,
+ build_int_cst (TREE_TYPE (status), 0)),
+ tmp, build_empty_stmt (input_location));
gfc_add_expr_to_block (block, tmp);
}
msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const
("Attempt to allocate negative amount of memory. "
"Possible integer overflow"));
- error = build_call_expr (gfor_fndecl_runtime_error, 1, msg);
+ error = build_call_expr_loc (input_location,
+ gfor_fndecl_runtime_error, 1, msg);
if (status != NULL_TREE && !integer_zerop (status))
{
gfc_start_block (&set_status_block);
gfc_add_modify (&set_status_block,
- fold_build1 (INDIRECT_REF, status_type, status),
+ fold_build1 (INDIRECT_REF, status_type, status),
build_int_cst (status_type, LIBERROR_ALLOCATION));
gfc_add_modify (&set_status_block, res,
- build_int_cst (pvoid_type_node, 0));
+ build_int_cst (prvoid_type_node, 0));
tmp = fold_build2 (EQ_EXPR, boolean_type_node, status,
- build_int_cst (status_type, 0));
+ build_int_cst (TREE_TYPE (status), 0));
error = fold_build3 (COND_EXPR, void_type_node, tmp, error,
gfc_finish_block (&set_status_block));
}
/* The allocation itself. */
gfc_start_block (&alloc_block);
gfc_add_modify (&alloc_block, res,
- build_call_expr (built_in_decls[BUILT_IN_MALLOC], 1,
+ fold_convert (prvoid_type_node,
+ build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_MALLOC], 1,
fold_build2 (MAX_EXPR, size_type_node,
size,
- build_int_cst (size_type_node, 1))));
+ build_int_cst (size_type_node, 1)))));
msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const
("Out of memory"));
- tmp = build_call_expr (gfor_fndecl_os_error, 1, msg);
+ tmp = build_call_expr_loc (input_location,
+ gfor_fndecl_os_error, 1, msg);
if (status != NULL_TREE && !integer_zerop (status))
{
tree tmp2;
cond = fold_build2 (EQ_EXPR, boolean_type_node, status,
- build_int_cst (status_type, 0));
+ build_int_cst (TREE_TYPE (status), 0));
tmp2 = fold_build2 (MODIFY_EXPR, status_type,
fold_build1 (INDIRECT_REF, status_type, status),
build_int_cst (status_type, LIBERROR_ALLOCATION));
tmp = fold_build3 (COND_EXPR, void_type_node,
fold_build2 (EQ_EXPR, boolean_type_node, res,
- build_int_cst (pvoid_type_node, 0)),
- tmp, build_empty_stmt ());
+ build_int_cst (prvoid_type_node, 0)),
+ tmp, build_empty_stmt (input_location));
gfc_add_expr_to_block (&alloc_block, tmp);
cond = fold_build2 (LT_EXPR, boolean_type_node, size,
return mem;
}
else
- runtime_error ("Attempting to allocate already allocated array");
+ runtime_error ("Attempting to allocate already allocated variable");
+ }
}
expr must be set to the original expression being allocated for its locus
size = fold_convert (size_type_node, size);
/* Create a variable to hold the result. */
- res = gfc_create_var (pvoid_type_node, NULL);
+ res = gfc_create_var (type, NULL);
null_mem = fold_build2 (EQ_EXPR, boolean_type_node, mem,
build_int_cst (type, 0));
error = gfc_trans_runtime_error (true, &expr->where,
"Attempting to allocate already"
- " allocated array '%s'",
+ " allocated variable '%s'",
varname);
}
else
error = gfc_trans_runtime_error (true, NULL,
"Attempting to allocate already allocated"
- "array");
+ "variable");
if (status != NULL_TREE && !integer_zerop (status))
{
stmtblock_t set_status_block;
gfc_start_block (&set_status_block);
- tmp = build_call_expr (built_in_decls[BUILT_IN_FREE], 1,
+ tmp = build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_FREE], 1,
fold_convert (pvoid_type_node, mem));
gfc_add_expr_to_block (&set_status_block, tmp);
var = gfc_evaluate_now (var, &block);
cond = fold_build2 (NE_EXPR, boolean_type_node, var,
build_int_cst (pvoid_type_node, 0));
- call = build_call_expr (built_in_decls[BUILT_IN_FREE], 1, var);
+ call = build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_FREE], 1, var);
tmp = fold_build3 (COND_EXPR, void_type_node, cond, call,
- build_empty_stmt ());
+ build_empty_stmt (input_location));
gfc_add_expr_to_block (&block, tmp);
return gfc_finish_block (&block);
varname);
}
else
- error = build_empty_stmt ();
+ error = build_empty_stmt (input_location);
if (status != NULL_TREE && !integer_zerop (status))
{
/* When POINTER is not NULL, we free it. */
gfc_start_block (&non_null);
- tmp = build_call_expr (built_in_decls[BUILT_IN_FREE], 1,
+ tmp = build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_FREE], 1,
fold_convert (pvoid_type_node, pointer));
gfc_add_expr_to_block (&non_null, tmp);
fold_build1 (INDIRECT_REF, status_type, status),
build_int_cst (status_type, 0));
tmp = fold_build3 (COND_EXPR, void_type_node, cond2, tmp,
- build_empty_stmt ());
+ build_empty_stmt (input_location));
gfc_add_expr_to_block (&non_null, tmp);
}
msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const
("Attempt to allocate a negative amount of memory."));
tmp = fold_build3 (COND_EXPR, void_type_node, negative,
- build_call_expr (gfor_fndecl_runtime_error, 1, msg),
- build_empty_stmt ());
+ build_call_expr_loc (input_location,
+ gfor_fndecl_runtime_error, 1, msg),
+ build_empty_stmt (input_location));
gfc_add_expr_to_block (block, tmp);
/* Call realloc and check the result. */
- tmp = build_call_expr (built_in_decls[BUILT_IN_REALLOC], 2,
+ tmp = build_call_expr_loc (input_location,
+ built_in_decls[BUILT_IN_REALLOC], 2,
fold_convert (pvoid_type_node, mem), size);
gfc_add_modify (block, res, fold_convert (type, tmp));
null_result = fold_build2 (EQ_EXPR, boolean_type_node, res,
msg = gfc_build_addr_expr (pchar_type_node, gfc_build_localized_cstring_const
("Out of memory"));
tmp = fold_build3 (COND_EXPR, void_type_node, null_result,
- build_call_expr (gfor_fndecl_os_error, 1, msg),
- build_empty_stmt ());
+ build_call_expr_loc (input_location,
+ gfor_fndecl_os_error, 1, msg),
+ build_empty_stmt (input_location));
gfc_add_expr_to_block (block, tmp);
/* if (size == 0) then the result is NULL. */
tmp = fold_build2 (MODIFY_EXPR, type, res, build_int_cst (type, 0));
zero = fold_build1 (TRUTH_NOT_EXPR, boolean_type_node, nonzero);
tmp = fold_build3 (COND_EXPR, void_type_node, zero, tmp,
- build_empty_stmt ());
+ build_empty_stmt (input_location));
gfc_add_expr_to_block (block, tmp);
return res;
}
-/* Translate an executable statement. */
+/* Translate an executable statement. The tree cond is used by gfc_trans_do.
+ This static function is wrapped by gfc_trans_code_cond and
+ gfc_trans_code. */
-tree
-gfc_trans_code (gfc_code * code)
+static tree
+trans_code (gfc_code * code, tree cond)
{
stmtblock_t block;
tree res;
if (!code)
- return build_empty_stmt ();
+ return build_empty_stmt (input_location);
gfc_start_block (&block);
gfc_add_expr_to_block (&block, res);
}
+ gfc_set_backend_locus (&code->loc);
+
switch (code->op)
{
case EXEC_NOP:
+ case EXEC_END_BLOCK:
+ case EXEC_END_PROCEDURE:
res = NULL_TREE;
break;
case EXEC_ASSIGN:
- res = gfc_trans_assign (code);
+ if (code->expr1->ts.type == BT_CLASS)
+ res = gfc_trans_class_assign (code);
+ else
+ res = gfc_trans_assign (code);
break;
case EXEC_LABEL_ASSIGN:
break;
case EXEC_POINTER_ASSIGN:
- res = gfc_trans_pointer_assign (code);
+ if (code->expr1->ts.type == BT_CLASS)
+ res = gfc_trans_class_assign (code);
+ else
+ res = gfc_trans_pointer_assign (code);
break;
case EXEC_INIT_ASSIGN:
- res = gfc_trans_init_assign (code);
+ if (code->expr1->ts.type == BT_CLASS)
+ res = gfc_trans_class_assign (code);
+ else
+ res = gfc_trans_init_assign (code);
break;
case EXEC_CONTINUE:
res = NULL_TREE;
break;
+ case EXEC_CRITICAL:
+ res = gfc_trans_critical (code);
+ break;
+
case EXEC_CYCLE:
res = gfc_trans_cycle (code);
break;
break;
case EXEC_STOP:
- res = gfc_trans_stop (code);
+ case EXEC_ERROR_STOP:
+ res = gfc_trans_stop (code, code->op == EXEC_ERROR_STOP);
break;
case EXEC_CALL:
- res = gfc_trans_call (code, false);
+ /* For MVBITS we've got the special exception that we need a
+ dependency check, too. */
+ {
+ bool is_mvbits = false;
+ if (code->resolved_isym
+ && code->resolved_isym->id == GFC_ISYM_MVBITS)
+ is_mvbits = true;
+ res = gfc_trans_call (code, is_mvbits, NULL_TREE,
+ NULL_TREE, false);
+ }
+ break;
+
+ case EXEC_CALL_PPC:
+ res = gfc_trans_call (code, false, NULL_TREE,
+ NULL_TREE, false);
break;
case EXEC_ASSIGN_CALL:
- res = gfc_trans_call (code, true);
+ res = gfc_trans_call (code, true, NULL_TREE,
+ NULL_TREE, false);
break;
case EXEC_RETURN:
res = gfc_trans_arithmetic_if (code);
break;
+ case EXEC_BLOCK:
+ res = gfc_trans_block_construct (code);
+ break;
+
case EXEC_DO:
- res = gfc_trans_do (code);
+ res = gfc_trans_do (code, cond);
break;
case EXEC_DO_WHILE:
res = gfc_trans_select (code);
break;
+ case EXEC_SELECT_TYPE:
+ /* Do nothing. SELECT TYPE statements should be transformed into
+ an ordinary SELECT CASE at resolution stage.
+ TODO: Add an error message here once this is done. */
+ res = NULL_TREE;
+ break;
+
case EXEC_FLUSH:
res = gfc_trans_flush (code);
break;
+ case EXEC_SYNC_ALL:
+ case EXEC_SYNC_IMAGES:
+ case EXEC_SYNC_MEMORY:
+ res = gfc_trans_sync (code, code->op);
+ break;
+
case EXEC_FORALL:
res = gfc_trans_forall (code);
break;
if (res != NULL_TREE && ! IS_EMPTY_STMT (res))
{
- if (TREE_CODE (res) == STATEMENT_LIST)
- tree_annotate_all_with_location (&res, input_location);
- else
+ if (TREE_CODE (res) != STATEMENT_LIST)
SET_EXPR_LOCATION (res, input_location);
/* Add the new statement to the block. */
}
+/* Translate an executable statement with condition, cond. The condition is
+ used by gfc_trans_do to test for IO result conditions inside implied
+ DO loops of READ and WRITE statements. See build_dt in trans-io.c. */
+
+tree
+gfc_trans_code_cond (gfc_code * code, tree cond)
+{
+ return trans_code (code, cond);
+}
+
+/* Translate an executable statement without condition. */
+
+tree
+gfc_trans_code (gfc_code * code)
+{
+ return trans_code (code, NULL_TREE);
+}
+
+
/* This function is called after a complete program unit has been parsed
and resolved. */
void
gfc_generate_code (gfc_namespace * ns)
{
+ ompws_flags = 0;
if (ns->is_block_data)
{
gfc_generate_block_data (ns);
gcc_assert (ns->proc_name->backend_decl == NULL);
ns->proc_name->backend_decl
- = build_decl (NAMESPACE_DECL, get_identifier (ns->proc_name->name),
+ = build_decl (ns->proc_name->declared_at.lb->location,
+ NAMESPACE_DECL, get_identifier (ns->proc_name->name),
void_type_node);
- gfc_set_decl_location (ns->proc_name->backend_decl,
- &ns->proc_name->declared_at);
entry = gfc_find_module (ns->proc_name->name);
if (entry->namespace_decl)
/* Buggy sourcecode, using a module before defining it? */
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