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Diffstat (limited to 'gcc-4.8.3/gcc/fortran/trans.h')
| -rw-r--r-- | gcc-4.8.3/gcc/fortran/trans.h | 960 |
1 files changed, 960 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/fortran/trans.h b/gcc-4.8.3/gcc/fortran/trans.h new file mode 100644 index 000000000..03adfddc5 --- /dev/null +++ b/gcc-4.8.3/gcc/fortran/trans.h @@ -0,0 +1,960 @@ +/* Header for code translation functions + Copyright (C) 2002-2013 Free Software Foundation, Inc. + Contributed by Paul Brook + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GFC_TRANS_H +#define GFC_TRANS_H + +/* Mangled symbols take the form __module__name. */ +#define GFC_MAX_MANGLED_SYMBOL_LEN (GFC_MAX_SYMBOL_LEN*2+4) + +/* Struct for holding a block of statements. It should be treated as an + opaque entity and not modified directly. This allows us to change the + underlying representation of statement lists. */ +typedef struct +{ + tree head; + unsigned int has_scope:1; +} +stmtblock_t; + +/* a simplified expression */ +typedef struct gfc_se +{ + /* Code blocks to be executed before and after using the value. */ + stmtblock_t pre; + stmtblock_t post; + + /* the result of the expression */ + tree expr; + + /* The length of a character string value. */ + tree string_length; + + /* If set gfc_conv_variable will return an expression for the array + descriptor. When set, want_pointer should also be set. + If not set scalarizing variables will be substituted. */ + unsigned descriptor_only:1; + + /* When this is set gfc_conv_expr returns the address of a variable. Only + applies to EXPR_VARIABLE nodes. + Also used by gfc_conv_array_parameter. When set this indicates a pointer + to the descriptor should be returned, rather than the descriptor itself. + */ + unsigned want_pointer:1; + + /* An array function call returning without a temporary. Also used for array + pointer assignments. */ + unsigned direct_byref:1; + + /* If direct_byref is set, do work out the descriptor as in that case but + do still create a new descriptor variable instead of using an + existing one. This is useful for special pointer assignments like + rank remapping where we have to process the descriptor before + assigning to final one. */ + unsigned byref_noassign:1; + + /* Ignore absent optional arguments. Used for some intrinsics. */ + unsigned ignore_optional:1; + + /* When this is set the data and offset fields of the returned descriptor + are NULL. Used by intrinsic size. */ + unsigned data_not_needed:1; + + /* If set, gfc_conv_procedure_call does not put byref calls into se->pre. */ + unsigned no_function_call:1; + + /* If set, we will force the creation of a temporary. Useful to disable + non-copying procedure argument passing optimizations, when some function + args alias. */ + unsigned force_tmp:1; + + unsigned want_coarray:1; + + /* Scalarization parameters. */ + struct gfc_se *parent; + struct gfc_ss *ss; + struct gfc_loopinfo *loop; +} +gfc_se; + + +/* Denotes different types of coarray. + Please keep in sync with libgfortran/caf/libcaf.h. */ +typedef enum +{ + GFC_CAF_COARRAY_STATIC, + GFC_CAF_COARRAY_ALLOC, + GFC_CAF_LOCK, + GFC_CAF_LOCK_COMP +} +gfc_coarray_type; + + +/* The array-specific scalarization information. The array members of + this struct are indexed by actual array index, and thus can be sparse. */ + +typedef struct gfc_array_info +{ + mpz_t *shape; + + /* The ref that holds information on this section. */ + gfc_ref *ref; + /* The descriptor of this array. */ + tree descriptor; + /* holds the pointer to the data array. */ + tree data; + /* To move some of the array index calculation out of the innermost loop. */ + tree offset; + tree saved_offset; + tree stride0; + /* Holds the SS for a subscript. Indexed by actual dimension. */ + struct gfc_ss *subscript[GFC_MAX_DIMENSIONS]; + + /* stride and delta are used to access this inside a scalarization loop. + start is used in the calculation of these. Indexed by scalarizer + dimension. */ + tree start[GFC_MAX_DIMENSIONS]; + tree end[GFC_MAX_DIMENSIONS]; + tree stride[GFC_MAX_DIMENSIONS]; + tree delta[GFC_MAX_DIMENSIONS]; +} +gfc_array_info; + +typedef enum +{ + /* A scalar value. This will be evaluated before entering the + scalarization loop. */ + GFC_SS_SCALAR, + + /* Like GFC_SS_SCALAR it evaluates the expression outside the + loop. Is always evaluated as a reference to the temporary, unless + temporary evaluation can result in a NULL pointer dereferencing (case of + optional arguments). Used for elemental function arguments. */ + GFC_SS_REFERENCE, + + /* An array section. Scalarization indices will be substituted during + expression translation. */ + GFC_SS_SECTION, + + /* A non-elemental function call returning an array. The call is executed + before entering the scalarization loop, storing the result in a + temporary. This temporary is then used inside the scalarization loop. + Simple assignments, e.g. a(:) = fn(), are handled without a temporary + as a special case. */ + GFC_SS_FUNCTION, + + /* An array constructor. The current implementation is sub-optimal in + many cases. It allocated a temporary, assigns the values to it, then + uses this temporary inside the scalarization loop. */ + GFC_SS_CONSTRUCTOR, + + /* A vector subscript. The vector's descriptor is cached in the + "descriptor" field of the associated gfc_ss_info. */ + GFC_SS_VECTOR, + + /* A temporary array allocated by the scalarizer. Its rank can be less + than that of the assignment expression. */ + GFC_SS_TEMP, + + /* An intrinsic function call. Many intrinsic functions which map directly + to library calls are created as GFC_SS_FUNCTION nodes. */ + GFC_SS_INTRINSIC, + + /* A component of a derived type. */ + GFC_SS_COMPONENT +} +gfc_ss_type; + + +typedef struct gfc_ss_info +{ + int refcount; + gfc_ss_type type; + gfc_expr *expr; + tree string_length; + + union + { + /* If type is GFC_SS_SCALAR or GFC_SS_REFERENCE. */ + struct + { + tree value; + } + scalar; + + /* GFC_SS_TEMP. */ + struct + { + tree type; + } + temp; + + /* All other types. */ + gfc_array_info array; + } + data; + + /* This is used by assignments requiring temporaries. The bits specify which + loops the terms appear in. This will be 1 for the RHS expressions, + 2 for the LHS expressions, and 3(=1|2) for the temporary. */ + unsigned useflags:2; + + /* Suppresses precalculation of scalars in WHERE assignments. */ + unsigned where:1; + + /* Tells whether the SS is for an actual argument which can be a NULL + reference. In other words, the associated dummy argument is OPTIONAL. + Used to handle elemental procedures. */ + bool can_be_null_ref; +} +gfc_ss_info; + +#define gfc_get_ss_info() XCNEW (gfc_ss_info) + + +/* Scalarization State chain. Created by walking an expression tree before + creating the scalarization loops. Then passed as part of a gfc_se structure + to translate the expression inside the loop. Note that these chains are + terminated by gfc_ss_terminator, not NULL. A NULL pointer in a gfc_se + indicates to gfc_conv_* that this is a scalar expression. + SS structures can only belong to a single loopinfo. They must be added + otherwise they will not get freed. */ + +typedef struct gfc_ss +{ + gfc_ss_info *info; + + int dimen; + /* Translation from loop dimensions to actual array dimensions. + actual_dim = dim[loop_dim] */ + int dim[GFC_MAX_DIMENSIONS]; + + /* All the SS in a loop and linked through loop_chain. The SS for an + expression are linked by the next pointer. */ + struct gfc_ss *loop_chain; + struct gfc_ss *next; + + /* Non-null if the ss is part of a nested loop. */ + struct gfc_ss *parent; + + /* If the evaluation of an expression requires a nested loop (for example + if the sum intrinsic is evaluated inline), this points to the nested + loop's gfc_ss. */ + struct gfc_ss *nested_ss; + + /* The loop this gfc_ss is in. */ + struct gfc_loopinfo *loop; + + unsigned is_alloc_lhs:1; +} +gfc_ss; +#define gfc_get_ss() XCNEW (gfc_ss) + +/* The contents of this aren't actually used. A NULL SS chain indicates a + scalar expression, so this pointer is used to terminate SS chains. */ +extern gfc_ss * const gfc_ss_terminator; + +/* Holds information about an expression while it is being scalarized. */ +typedef struct gfc_loopinfo +{ + stmtblock_t pre; + stmtblock_t post; + + int dimen; + + /* All the SS involved with this loop. */ + gfc_ss *ss; + /* The SS describing the temporary used in an assignment. */ + gfc_ss *temp_ss; + + /* Non-null if this loop is nested in another one. */ + struct gfc_loopinfo *parent; + + /* Chain of nested loops. */ + struct gfc_loopinfo *nested, *next; + + /* The scalarization loop index variables. */ + tree loopvar[GFC_MAX_DIMENSIONS]; + + /* The bounds of the scalarization loops. */ + tree from[GFC_MAX_DIMENSIONS]; + tree to[GFC_MAX_DIMENSIONS]; + gfc_ss *specloop[GFC_MAX_DIMENSIONS]; + + /* The code member contains the code for the body of the next outer loop. */ + stmtblock_t code[GFC_MAX_DIMENSIONS]; + + /* Order in which the dimensions should be looped, innermost first. */ + int order[GFC_MAX_DIMENSIONS]; + + /* Enum to control loop reversal. */ + gfc_reverse reverse[GFC_MAX_DIMENSIONS]; + + /* The number of dimensions for which a temporary is used. */ + int temp_dim; + + /* If set we don't need the loop variables. */ + unsigned array_parameter:1; +} +gfc_loopinfo; + +#define gfc_get_loopinfo() XCNEW (gfc_loopinfo) + +/* Information about a symbol that has been shadowed by a temporary. */ +typedef struct +{ + symbol_attribute attr; + tree decl; +} +gfc_saved_var; + + +/* Store information about a block of code together with special + initialization and clean-up code. This can be used to incrementally add + init and cleanup, and in the end put everything together to a + try-finally expression. */ +typedef struct +{ + tree init; + tree cleanup; + tree code; +} +gfc_wrapped_block; + +/* Class API functions. */ +tree gfc_class_data_get (tree); +tree gfc_class_vptr_get (tree); +tree gfc_vtable_hash_get (tree); +tree gfc_vtable_size_get (tree); +tree gfc_vtable_extends_get (tree); +tree gfc_vtable_def_init_get (tree); +tree gfc_vtable_copy_get (tree); +tree gfc_vtable_final_get (tree); +tree gfc_get_vptr_from_expr (tree); +tree gfc_get_class_array_ref (tree, tree); +tree gfc_copy_class_to_class (tree, tree, tree); +tree gfc_build_final_call (gfc_typespec, gfc_expr *, gfc_expr *, bool, + gfc_expr *); +void gfc_conv_derived_to_class (gfc_se *, gfc_expr *, gfc_typespec, tree, bool, + bool); +void gfc_conv_class_to_class (gfc_se *, gfc_expr *, gfc_typespec, bool, bool, + bool, bool); + +/* Initialize an init/cleanup block. */ +void gfc_start_wrapped_block (gfc_wrapped_block* block, tree code); +/* Add a pair of init/cleanup code to the block. Each one might be a + NULL_TREE if not required. */ +void gfc_add_init_cleanup (gfc_wrapped_block* block, tree init, tree cleanup); +/* Finalize the block, that is, create a single expression encapsulating the + original code together with init and clean-up code. */ +tree gfc_finish_wrapped_block (gfc_wrapped_block* block); + + +/* Advance the SS chain to the next term. */ +void gfc_advance_se_ss_chain (gfc_se *); + +/* Call this to initialize a gfc_se structure before use + first parameter is structure to initialize, second is + parent to get scalarization data from, or NULL. */ +void gfc_init_se (gfc_se *, gfc_se *); + +/* Create an artificial variable decl and add it to the current scope. */ +tree gfc_create_var (tree, const char *); +/* Like above but doesn't add it to the current scope. */ +tree gfc_create_var_np (tree, const char *); + +/* Store the result of an expression in a temp variable so it can be used + repeatedly even if the original changes */ +void gfc_make_safe_expr (gfc_se * se); + +/* Makes sure se is suitable for passing as a function string parameter. */ +void gfc_conv_string_parameter (gfc_se * se); + +/* Compare two strings. */ +tree gfc_build_compare_string (tree, tree, tree, tree, int, enum tree_code); + +/* When using the gfc_conv_* make sure you understand what they do, i.e. + when a POST chain may be created, and what the returned expression may be + used for. Note that character strings have special handling. This + should not be a problem as most statements/operations only deal with + numeric/logical types. See the implementations in trans-expr.c + for details of the individual functions. */ + +void gfc_conv_expr (gfc_se * se, gfc_expr * expr); +void gfc_conv_expr_val (gfc_se * se, gfc_expr * expr); +void gfc_conv_expr_lhs (gfc_se * se, gfc_expr * expr); +void gfc_conv_expr_reference (gfc_se * se, gfc_expr *); +void gfc_conv_expr_type (gfc_se * se, gfc_expr *, tree); + +tree gfc_conv_scalar_to_descriptor (gfc_se *, tree, symbol_attribute); + + +/* trans-expr.c */ +void gfc_conv_scalar_char_value (gfc_symbol *sym, gfc_se *se, gfc_expr **expr); +tree gfc_string_to_single_character (tree len, tree str, int kind); + +/* Find the decl containing the auxiliary variables for assigned variables. */ +void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr); +/* If the value is not constant, Create a temporary and copy the value. */ +tree gfc_evaluate_now_loc (location_t, tree, stmtblock_t *); +tree gfc_evaluate_now (tree, stmtblock_t *); + +/* Find the appropriate variant of a math intrinsic. */ +tree gfc_builtin_decl_for_float_kind (enum built_in_function, int); + +/* Intrinsic procedure handling. */ +tree gfc_conv_intrinsic_subroutine (gfc_code *); +void gfc_conv_intrinsic_function (gfc_se *, gfc_expr *); + +/* Does an intrinsic map directly to an external library call + This is true for array-returning intrinsics, unless + gfc_inline_intrinsic_function_p returns true. */ +int gfc_is_intrinsic_libcall (gfc_expr *); + +/* Used to call ordinary functions/subroutines + and procedure pointer components. */ +int gfc_conv_procedure_call (gfc_se *, gfc_symbol *, gfc_actual_arglist *, + gfc_expr *, vec<tree, va_gc> *); + +void gfc_conv_subref_array_arg (gfc_se *, gfc_expr *, int, sym_intent, bool); + +/* Generate code for a scalar assignment. */ +tree gfc_trans_scalar_assign (gfc_se *, gfc_se *, gfc_typespec, bool, bool, + bool); + +/* Translate COMMON blocks. */ +void gfc_trans_common (gfc_namespace *); + +/* Translate a derived type constructor. */ +void gfc_conv_structure (gfc_se *, gfc_expr *, int); + +/* Return an expression which determines if a dummy parameter is present. */ +tree gfc_conv_expr_present (gfc_symbol *); +/* Convert a missing, dummy argument into a null or zero. */ +void gfc_conv_missing_dummy (gfc_se *, gfc_expr *, gfc_typespec, int); + +/* Generate code to allocate a string temporary. */ +tree gfc_conv_string_tmp (gfc_se *, tree, tree); +/* Get the string length variable belonging to an expression. */ +tree gfc_get_expr_charlen (gfc_expr *); +/* Initialize a string length variable. */ +void gfc_conv_string_length (gfc_charlen *, gfc_expr *, stmtblock_t *); +/* Ensure type sizes can be gimplified. */ +void gfc_trans_vla_type_sizes (gfc_symbol *, stmtblock_t *); + +/* Add an expression to the end of a block. */ +void gfc_add_expr_to_block (stmtblock_t *, tree); +/* Add an expression to the beginning of a block. */ +void gfc_prepend_expr_to_block (stmtblock_t *, tree); +/* Add a block to the end of a block. */ +void gfc_add_block_to_block (stmtblock_t *, stmtblock_t *); +/* Add a MODIFY_EXPR to a block. */ +void gfc_add_modify_loc (location_t, stmtblock_t *, tree, tree); +void gfc_add_modify (stmtblock_t *, tree, tree); + +/* Initialize a statement block. */ +void gfc_init_block (stmtblock_t *); +/* Start a new statement block. Like gfc_init_block but also starts a new + variable scope. */ +void gfc_start_block (stmtblock_t *); +/* Finish a statement block. Also closes the scope if the block was created + with gfc_start_block. */ +tree gfc_finish_block (stmtblock_t *); +/* Merge the scope of a block with its parent. */ +void gfc_merge_block_scope (stmtblock_t * block); + +/* Return the backend label decl. */ +tree gfc_get_label_decl (gfc_st_label *); + +/* Return the decl for an external function. */ +tree gfc_get_extern_function_decl (gfc_symbol *); + +/* Return the decl for a function. */ +tree gfc_get_function_decl (gfc_symbol *); + +/* Build an ADDR_EXPR. */ +tree gfc_build_addr_expr (tree, tree); + +/* Build an ARRAY_REF. */ +tree gfc_build_array_ref (tree, tree, tree); + +/* Creates a label. Decl is artificial if label_id == NULL_TREE. */ +tree gfc_build_label_decl (tree); + +/* Return the decl used to hold the function return value. + Do not use if the function has an explicit result variable. */ +tree gfc_get_fake_result_decl (gfc_symbol *, int); + +/* Add a decl to the binding level for the current function. */ +void gfc_add_decl_to_function (tree); + +/* Make prototypes for runtime library functions. */ +void gfc_build_builtin_function_decls (void); + +/* Set the backend source location of a decl. */ +void gfc_set_decl_location (tree, locus *); + +/* Get a module symbol backend_decl if possible. */ +bool gfc_get_module_backend_decl (gfc_symbol *); + +/* Return the variable decl for a symbol. */ +tree gfc_get_symbol_decl (gfc_symbol *); + +/* Build a static initializer. */ +tree gfc_conv_initializer (gfc_expr *, gfc_typespec *, tree, bool, bool, bool); + +/* Assign a default initializer to a derived type. */ +void gfc_init_default_dt (gfc_symbol *, stmtblock_t *, bool); + +/* Substitute a temporary variable in place of the real one. */ +void gfc_shadow_sym (gfc_symbol *, tree, gfc_saved_var *); + +/* Restore the original variable. */ +void gfc_restore_sym (gfc_symbol *, gfc_saved_var *); + +/* Setting a decl assembler name, mangling it according to target rules + (like Windows @NN decorations). */ +void gfc_set_decl_assembler_name (tree, tree); + +/* Returns true if a variable of specified size should go on the stack. */ +int gfc_can_put_var_on_stack (tree); + +/* Allocate the lang-specific part of a decl node. */ +void gfc_allocate_lang_decl (tree); + +/* Advance along a TREE_CHAIN. */ +tree gfc_advance_chain (tree, int); + +/* Create a decl for a function. */ +void gfc_create_function_decl (gfc_namespace *, bool); +/* Generate the code for a function. */ +void gfc_generate_function_code (gfc_namespace *); +/* Output a BLOCK DATA program unit. */ +void gfc_generate_block_data (gfc_namespace *); +/* Output a decl for a module variable. */ +void gfc_generate_module_vars (gfc_namespace *); +/* Get the appropriate return statement for a procedure. */ +tree gfc_generate_return (void); + +struct GTY(()) module_htab_entry { + const char *name; + tree namespace_decl; + htab_t GTY ((param_is (union tree_node))) decls; +}; + +struct module_htab_entry *gfc_find_module (const char *); +void gfc_module_add_decl (struct module_htab_entry *, tree); + +/* Get and set the current location. */ +void gfc_save_backend_locus (locus *); +void gfc_set_backend_locus (locus *); +void gfc_restore_backend_locus (locus *); + +/* Handle static constructor functions. */ +extern GTY(()) tree gfc_static_ctors; +void gfc_generate_constructors (void); + +/* Get the string length of an array constructor. */ +bool get_array_ctor_strlen (stmtblock_t *, gfc_constructor_base, tree *); + +/* Mark a condition as likely or unlikely. */ +tree gfc_likely (tree); +tree gfc_unlikely (tree); + +/* Generate a runtime error call. */ +tree gfc_trans_runtime_error (bool, locus*, const char*, ...); + +/* Generate a runtime warning/error check. */ +void gfc_trans_runtime_check (bool, bool, tree, stmtblock_t *, locus *, + const char *, ...); + +/* Generate a runtime check for same string length. */ +void gfc_trans_same_strlen_check (const char*, locus*, tree, tree, + stmtblock_t*); + +/* Generate a call to free() after checking that its arg is non-NULL. */ +tree gfc_call_free (tree); + +/* Allocate memory after performing a few checks. */ +tree gfc_call_malloc (stmtblock_t *, tree, tree); + +/* Build a memcpy call. */ +tree gfc_build_memcpy_call (tree, tree, tree); + +/* Allocate memory for allocatable variables, with optional status variable. */ +void gfc_allocate_allocatable (stmtblock_t*, tree, tree, tree, tree, + tree, tree, tree, gfc_expr*); + +/* Allocate memory, with optional status variable. */ +void gfc_allocate_using_malloc (stmtblock_t *, tree, tree, tree); + +/* Generate code to deallocate an array. */ +tree gfc_deallocate_with_status (tree, tree, tree, tree, tree, bool, + gfc_expr *, bool); +tree gfc_deallocate_scalar_with_status (tree, tree, bool, gfc_expr*, gfc_typespec); + +/* Generate code to call realloc(). */ +tree gfc_call_realloc (stmtblock_t *, tree, tree); + +/* Generate code for an assignment, includes scalarization. */ +tree gfc_trans_assignment (gfc_expr *, gfc_expr *, bool, bool); + +/* Generate code for a pointer assignment. */ +tree gfc_trans_pointer_assignment (gfc_expr *, gfc_expr *); + +/* Initialize function decls for library functions. */ +void gfc_build_intrinsic_lib_fndecls (void); +/* Create function decls for IO library functions. */ +void gfc_trans_io_runtime_check (tree, tree, int, const char *, stmtblock_t *); +void gfc_build_io_library_fndecls (void); +/* Build a function decl for a library function. */ +tree gfc_build_library_function_decl (tree, tree, int, ...); +tree gfc_build_library_function_decl_with_spec (tree name, const char *spec, + tree rettype, int nargs, ...); + +/* Process the local variable decls of a block construct. */ +void gfc_process_block_locals (gfc_namespace*); + +/* Output initialization/clean-up code that was deferred. */ +void gfc_trans_deferred_vars (gfc_symbol*, gfc_wrapped_block *); + +/* In f95-lang.c. */ +tree pushdecl (tree); +tree pushdecl_top_level (tree); +void pushlevel (void); +tree poplevel (int, int); +tree getdecls (void); + +/* In trans-types.c. */ +struct array_descr_info; +bool gfc_get_array_descr_info (const_tree, struct array_descr_info *); + +/* In trans-openmp.c */ +bool gfc_omp_privatize_by_reference (const_tree); +enum omp_clause_default_kind gfc_omp_predetermined_sharing (tree); +tree gfc_omp_report_decl (tree); +tree gfc_omp_clause_default_ctor (tree, tree, tree); +tree gfc_omp_clause_copy_ctor (tree, tree, tree); +tree gfc_omp_clause_assign_op (tree, tree, tree); +tree gfc_omp_clause_dtor (tree, tree); +bool gfc_omp_disregard_value_expr (tree, bool); +bool gfc_omp_private_debug_clause (tree, bool); +bool gfc_omp_private_outer_ref (tree); +struct gimplify_omp_ctx; +void gfc_omp_firstprivatize_type_sizes (struct gimplify_omp_ctx *, tree); + +/* Runtime library function decls. */ +extern GTY(()) tree gfor_fndecl_pause_numeric; +extern GTY(()) tree gfor_fndecl_pause_string; +extern GTY(()) tree gfor_fndecl_stop_numeric; +extern GTY(()) tree gfor_fndecl_stop_numeric_f08; +extern GTY(()) tree gfor_fndecl_stop_string; +extern GTY(()) tree gfor_fndecl_error_stop_numeric; +extern GTY(()) tree gfor_fndecl_error_stop_string; +extern GTY(()) tree gfor_fndecl_runtime_error; +extern GTY(()) tree gfor_fndecl_runtime_error_at; +extern GTY(()) tree gfor_fndecl_runtime_warning_at; +extern GTY(()) tree gfor_fndecl_os_error; +extern GTY(()) tree gfor_fndecl_generate_error; +extern GTY(()) tree gfor_fndecl_set_fpe; +extern GTY(()) tree gfor_fndecl_set_options; +extern GTY(()) tree gfor_fndecl_ttynam; +extern GTY(()) tree gfor_fndecl_ctime; +extern GTY(()) tree gfor_fndecl_fdate; +extern GTY(()) tree gfor_fndecl_in_pack; +extern GTY(()) tree gfor_fndecl_in_unpack; +extern GTY(()) tree gfor_fndecl_associated; + + +/* Coarray run-time library function decls. */ +extern GTY(()) tree gfor_fndecl_caf_init; +extern GTY(()) tree gfor_fndecl_caf_finalize; +extern GTY(()) tree gfor_fndecl_caf_register; +extern GTY(()) tree gfor_fndecl_caf_deregister; +extern GTY(()) tree gfor_fndecl_caf_critical; +extern GTY(()) tree gfor_fndecl_caf_end_critical; +extern GTY(()) tree gfor_fndecl_caf_sync_all; +extern GTY(()) tree gfor_fndecl_caf_sync_images; +extern GTY(()) tree gfor_fndecl_caf_error_stop; +extern GTY(()) tree gfor_fndecl_caf_error_stop_str; + +/* Coarray global variables for num_images/this_image. */ +extern GTY(()) tree gfort_gvar_caf_num_images; +extern GTY(()) tree gfort_gvar_caf_this_image; + + +/* Math functions. Many other math functions are handled in + trans-intrinsic.c. */ + +typedef struct GTY(()) gfc_powdecl_list { + tree integer; + tree real; + tree cmplx; +} +gfc_powdecl_list; + +extern GTY(()) gfc_powdecl_list gfor_fndecl_math_powi[4][3]; +extern GTY(()) tree gfor_fndecl_math_ishftc4; +extern GTY(()) tree gfor_fndecl_math_ishftc8; +extern GTY(()) tree gfor_fndecl_math_ishftc16; + +/* BLAS functions. */ +extern GTY(()) tree gfor_fndecl_sgemm; +extern GTY(()) tree gfor_fndecl_dgemm; +extern GTY(()) tree gfor_fndecl_cgemm; +extern GTY(()) tree gfor_fndecl_zgemm; + +/* String functions. */ +extern GTY(()) tree gfor_fndecl_compare_string; +extern GTY(()) tree gfor_fndecl_concat_string; +extern GTY(()) tree gfor_fndecl_string_len_trim; +extern GTY(()) tree gfor_fndecl_string_index; +extern GTY(()) tree gfor_fndecl_string_scan; +extern GTY(()) tree gfor_fndecl_string_verify; +extern GTY(()) tree gfor_fndecl_string_trim; +extern GTY(()) tree gfor_fndecl_string_minmax; +extern GTY(()) tree gfor_fndecl_adjustl; +extern GTY(()) tree gfor_fndecl_adjustr; +extern GTY(()) tree gfor_fndecl_select_string; +extern GTY(()) tree gfor_fndecl_compare_string_char4; +extern GTY(()) tree gfor_fndecl_concat_string_char4; +extern GTY(()) tree gfor_fndecl_string_len_trim_char4; +extern GTY(()) tree gfor_fndecl_string_index_char4; +extern GTY(()) tree gfor_fndecl_string_scan_char4; +extern GTY(()) tree gfor_fndecl_string_verify_char4; +extern GTY(()) tree gfor_fndecl_string_trim_char4; +extern GTY(()) tree gfor_fndecl_string_minmax_char4; +extern GTY(()) tree gfor_fndecl_adjustl_char4; +extern GTY(()) tree gfor_fndecl_adjustr_char4; +extern GTY(()) tree gfor_fndecl_select_string_char4; + +/* Conversion between character kinds. */ +extern GTY(()) tree gfor_fndecl_convert_char1_to_char4; +extern GTY(()) tree gfor_fndecl_convert_char4_to_char1; + +/* Other misc. runtime library functions. */ +extern GTY(()) tree gfor_fndecl_size0; +extern GTY(()) tree gfor_fndecl_size1; +extern GTY(()) tree gfor_fndecl_iargc; + +/* Implemented in Fortran. */ +extern GTY(()) tree gfor_fndecl_sc_kind; +extern GTY(()) tree gfor_fndecl_si_kind; +extern GTY(()) tree gfor_fndecl_sr_kind; + + +/* True if node is an integer constant. */ +#define INTEGER_CST_P(node) (TREE_CODE(node) == INTEGER_CST) + +/* gfortran-specific declaration information, the _CONT versions denote + arrays with CONTIGUOUS attribute. */ + +enum gfc_array_kind +{ + GFC_ARRAY_UNKNOWN, + GFC_ARRAY_ASSUMED_SHAPE, + GFC_ARRAY_ASSUMED_SHAPE_CONT, + GFC_ARRAY_ASSUMED_RANK, + GFC_ARRAY_ASSUMED_RANK_CONT, + GFC_ARRAY_ALLOCATABLE, + GFC_ARRAY_POINTER, + GFC_ARRAY_POINTER_CONT +}; + +/* Array types only. */ +/* FIXME: the variable_size annotation here is needed because these types are + variable-sized in some other frontends. Due to gengtype deficiency the GTY + options of such types have to agree across all frontends. */ +struct GTY((variable_size)) lang_type { + int rank, corank; + enum gfc_array_kind akind; + tree lbound[GFC_MAX_DIMENSIONS]; + tree ubound[GFC_MAX_DIMENSIONS]; + tree stride[GFC_MAX_DIMENSIONS]; + tree size; + tree offset; + tree dtype; + tree dataptr_type; + tree span; + tree base_decl[2]; + tree nonrestricted_type; + tree caf_token; + tree caf_offset; +}; + +struct GTY((variable_size)) lang_decl { + /* Dummy variables. */ + tree saved_descriptor; + /* Assigned integer nodes. Stringlength is the IO format string's length. + Addr is the address of the string or the target label. Stringlength is + initialized to -2 and assigned to -1 when addr is assigned to the + address of target label. */ + tree stringlen; + tree addr; + tree span; + /* For assumed-shape coarrays. */ + tree token, caf_offset; +}; + + +#define GFC_DECL_ASSIGN_ADDR(node) DECL_LANG_SPECIFIC(node)->addr +#define GFC_DECL_STRING_LEN(node) DECL_LANG_SPECIFIC(node)->stringlen +#define GFC_DECL_SPAN(node) DECL_LANG_SPECIFIC(node)->span +#define GFC_DECL_TOKEN(node) DECL_LANG_SPECIFIC(node)->token +#define GFC_DECL_CAF_OFFSET(node) DECL_LANG_SPECIFIC(node)->caf_offset +#define GFC_DECL_SAVED_DESCRIPTOR(node) \ + (DECL_LANG_SPECIFIC(node)->saved_descriptor) +#define GFC_DECL_PACKED_ARRAY(node) DECL_LANG_FLAG_0(node) +#define GFC_DECL_PARTIAL_PACKED_ARRAY(node) DECL_LANG_FLAG_1(node) +#define GFC_DECL_ASSIGN(node) DECL_LANG_FLAG_2(node) +#define GFC_DECL_COMMON_OR_EQUIV(node) DECL_LANG_FLAG_3(node) +#define GFC_DECL_CRAY_POINTEE(node) DECL_LANG_FLAG_4(node) +#define GFC_DECL_RESULT(node) DECL_LANG_FLAG_5(node) +#define GFC_DECL_SUBREF_ARRAY_P(node) DECL_LANG_FLAG_6(node) +#define GFC_DECL_CLASS(node) DECL_LANG_FLAG_8(node) + +/* An array descriptor. */ +#define GFC_DESCRIPTOR_TYPE_P(node) TYPE_LANG_FLAG_1(node) +/* An array without a descriptor. */ +#define GFC_ARRAY_TYPE_P(node) TYPE_LANG_FLAG_2(node) +/* Fortran POINTER type. */ +#define GFC_POINTER_TYPE_P(node) TYPE_LANG_FLAG_3(node) +/* Fortran CLASS type. */ +#define GFC_CLASS_TYPE_P(node) TYPE_LANG_FLAG_4(node) +/* The GFC_TYPE_ARRAY_* members are present in both descriptor and + descriptorless array types. */ +#define GFC_TYPE_ARRAY_LBOUND(node, dim) \ + (TYPE_LANG_SPECIFIC(node)->lbound[dim]) +#define GFC_TYPE_ARRAY_UBOUND(node, dim) \ + (TYPE_LANG_SPECIFIC(node)->ubound[dim]) +#define GFC_TYPE_ARRAY_STRIDE(node, dim) \ + (TYPE_LANG_SPECIFIC(node)->stride[dim]) +#define GFC_TYPE_ARRAY_RANK(node) (TYPE_LANG_SPECIFIC(node)->rank) +#define GFC_TYPE_ARRAY_CORANK(node) (TYPE_LANG_SPECIFIC(node)->corank) +#define GFC_TYPE_ARRAY_CAF_TOKEN(node) (TYPE_LANG_SPECIFIC(node)->caf_token) +#define GFC_TYPE_ARRAY_CAF_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->caf_offset) +#define GFC_TYPE_ARRAY_SIZE(node) (TYPE_LANG_SPECIFIC(node)->size) +#define GFC_TYPE_ARRAY_OFFSET(node) (TYPE_LANG_SPECIFIC(node)->offset) +#define GFC_TYPE_ARRAY_AKIND(node) (TYPE_LANG_SPECIFIC(node)->akind) +/* Code should use gfc_get_dtype instead of accessing this directly. It may + not be known when the type is created. */ +#define GFC_TYPE_ARRAY_DTYPE(node) (TYPE_LANG_SPECIFIC(node)->dtype) +#define GFC_TYPE_ARRAY_DATAPTR_TYPE(node) \ + (TYPE_LANG_SPECIFIC(node)->dataptr_type) +#define GFC_TYPE_ARRAY_SPAN(node) (TYPE_LANG_SPECIFIC(node)->span) +#define GFC_TYPE_ARRAY_BASE_DECL(node, internal) \ + (TYPE_LANG_SPECIFIC(node)->base_decl[(internal)]) + + +/* Build an expression with void type. */ +#define build1_v(code, arg) \ + fold_build1_loc (input_location, code, void_type_node, arg) +#define build2_v(code, arg1, arg2) \ + fold_build2_loc (input_location, code, void_type_node, arg1, arg2) +#define build3_v(code, arg1, arg2, arg3) \ + fold_build3_loc (input_location, code, void_type_node, arg1, arg2, arg3) +#define build4_v(code, arg1, arg2, arg3, arg4) \ + build4_loc (input_location, code, void_type_node, arg1, arg2, \ + arg3, arg4) + +/* This group of functions allows a caller to evaluate an expression from + the callee's interface. It establishes a mapping between the interface's + dummy arguments and the caller's actual arguments, then applies that + mapping to a given gfc_expr. + + You can initialize a mapping structure like so: + + gfc_interface_mapping mapping; + ... + gfc_init_interface_mapping (&mapping); + + You should then evaluate each actual argument into a temporary + gfc_se structure, here called "se", and map the result to the + dummy argument's symbol, here called "sym": + + gfc_add_interface_mapping (&mapping, sym, &se); + + After adding all mappings, you should call: + + gfc_finish_interface_mapping (&mapping, pre, post); + + where "pre" and "post" are statement blocks for initialization + and finalization code respectively. You can then evaluate an + interface expression "expr" as follows: + + gfc_apply_interface_mapping (&mapping, se, expr); + + Once you've evaluated all expressions, you should free + the mapping structure with: + + gfc_free_interface_mapping (&mapping); */ + + +/* This structure represents a mapping from OLD to NEW, where OLD is a + dummy argument symbol and NEW is a symbol that represents the value + of an actual argument. Mappings are linked together using NEXT + (in no particular order). */ +typedef struct gfc_interface_sym_mapping +{ + struct gfc_interface_sym_mapping *next; + gfc_symbol *old; + gfc_symtree *new_sym; + gfc_expr *expr; +} +gfc_interface_sym_mapping; + + +/* This structure is used by callers to evaluate an expression from + a callee's interface. */ +typedef struct gfc_interface_mapping +{ + /* Maps the interface's dummy arguments to the values that the caller + is passing. The whole list is owned by this gfc_interface_mapping. */ + gfc_interface_sym_mapping *syms; + + /* A list of gfc_charlens that were needed when creating copies of + expressions. The whole list is owned by this gfc_interface_mapping. */ + gfc_charlen *charlens; +} +gfc_interface_mapping; + +void gfc_init_interface_mapping (gfc_interface_mapping *); +void gfc_free_interface_mapping (gfc_interface_mapping *); +void gfc_add_interface_mapping (gfc_interface_mapping *, + gfc_symbol *, gfc_se *, gfc_expr *); +void gfc_finish_interface_mapping (gfc_interface_mapping *, + stmtblock_t *, stmtblock_t *); +void gfc_apply_interface_mapping (gfc_interface_mapping *, + gfc_se *, gfc_expr *); + + +/* Standard error messages used in all the trans-*.c files. */ +extern const char gfc_msg_fault[]; +extern const char gfc_msg_wrong_return[]; + +#define OMPWS_WORKSHARE_FLAG 1 /* Set if in a workshare construct. */ +#define OMPWS_CURR_SINGLEUNIT 2 /* Set if current gfc_code in workshare + construct is not workshared. */ +#define OMPWS_SCALARIZER_WS 4 /* Set if scalarizer should attempt + to create parallel loops. */ +#define OMPWS_NOWAIT 8 /* Use NOWAIT on OMP_FOR. */ +extern int ompws_flags; + +#endif /* GFC_TRANS_H */ |