X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=a3b2a252fcc9b79e4b27d77f3a9913a96c9670a8;hb=b5015a463c26d80d50e93cbf6e3edc1ecfac2cfc;hp=09397c8cebcf590970f209b2c11cd1f9cb0fe615;hpb=d3574fcc5c50023d68c5588e8a2a20378121e39e;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index 09397c8ce..a3b2a252f 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -1,9 +1,12 @@ - #ifndef _FIRM_BEARCH_H #define _FIRM_BEARCH_H #include "firm_config.h" +#ifdef WITH_LIBCORE +#include +#endif + #include "irnode.h" #include "irmode.h" @@ -14,26 +17,31 @@ #include "list.h" #include "ident.h" -typedef struct _arch_register_class_t arch_register_class_t; -typedef struct _arch_register_t arch_register_t; -typedef struct _arch_enum_t arch_enum_t; -typedef struct _arch_enum_member_t arch_enum_member_t; -typedef struct _arch_isa_if_t arch_isa_if_t; -typedef struct _arch_env_t arch_env_t; -typedef struct _arch_irn_ops_t arch_irn_ops_t; -typedef struct _arch_irn_handler_t arch_irn_handler_t; +#include "belistsched.h" + +typedef struct _arch_register_class_t arch_register_class_t; +typedef struct _arch_register_t arch_register_t; +typedef struct _arch_enum_t arch_enum_t; +typedef struct _arch_enum_member_t arch_enum_member_t; +typedef struct _arch_isa_if_t arch_isa_if_t; +typedef struct _arch_isa_t arch_isa_t; +typedef struct _arch_env_t arch_env_t; +typedef struct _arch_irn_ops_t arch_irn_ops_t; +typedef struct _arch_irn_handler_t arch_irn_handler_t; +typedef struct _arch_code_generator_t arch_code_generator_t; +typedef struct _arch_code_generator_if_t arch_code_generator_if_t; struct _be_node_factory_t; typedef enum _arch_register_type_t { - arch_register_type_none = 0, + arch_register_type_none = 0, arch_register_type_write_invariant, - arch_register_type_caller_saved, /**< The register must be saved by the caller - upon a function call. It thus can be overwritten - in the called function. */ - arch_register_type_callee_saved, /**< The register must be saved by the called function, - it thus survives a function call. */ - arch_register_type_ignore /**< Do not consider this register when allocating. */ + arch_register_type_caller_saved, /**< The register must be saved by the caller + upon a function call. It thus can be overwritten + in the called function. */ + arch_register_type_callee_saved, /**< The register must be saved by the called function, + it thus survives a function call. */ + arch_register_type_ignore /**< Do not consider this register when allocating. */ } arch_register_type_t; /** @@ -41,9 +49,9 @@ typedef enum _arch_register_type_t { */ struct _arch_register_t { const char *name; /**< The name of the register. */ - const arch_register_class_t *reg_class; /**< The class the register belongs to. */ - int index; /**< The index of the register in the class. */ - arch_register_type_t type; /**< The type of the register. */ + const arch_register_class_t *reg_class; /**< The class the register belongs to. */ + int index; /**< The index of the register in the class. */ + arch_register_type_t type; /**< The type of the register. */ void *data; /**< Custom data. */ }; @@ -67,9 +75,9 @@ static INLINE int _arch_register_get_index(const arch_register_t *reg) * Like general purpose or floating point. */ struct _arch_register_class_t { - const char *name; /**< The name of the register. */ - int n_regs; /**< Number of registers in this class. */ - const arch_register_t *regs; /**< The array of registers. */ + const char *name; /**< The name of the register class. */ + int n_regs; /**< Number of registers in this class. */ + const arch_register_t *regs; /**< The array of registers. */ }; #define arch_register_class_n_regs(cls) ((cls)->n_regs) @@ -85,8 +93,8 @@ extern int arch_register_class_put(const arch_register_class_t *cls, bitset_t *b static INLINE const arch_register_t * _arch_register_for_index(const arch_register_class_t *cls, int idx) { - assert(0 <= idx && idx < cls->n_regs); - return &cls->regs[idx]; + assert(0 <= idx && idx < cls->n_regs); + return &cls->regs[idx]; } #define arch_register_for_index(cls, idx) \ @@ -104,14 +112,14 @@ _arch_register_for_index(const arch_register_class_t *cls, int idx) */ struct _arch_immediate_t { const char *name; /**< The name of the immediate. */ - ir_mode *mode; /**< The mode of the immediate. */ + ir_mode *mode; /**< The mode of the immediate. */ }; /** * The member of an enum. */ struct _arch_enum_member_t { - arch_enum_t *enm; /**< The enum, this member belongs to. */ + arch_enum_t *enm; /**< The enum, this member belongs to. */ }; /** @@ -122,8 +130,8 @@ struct _arch_enum_member_t { * eq, ...) some other special attributes of an instruction. */ struct _arch_enum_t { - int n_members; /**< The number of members in this enum. */ - arch_enum_member_t *members[1]; /**< The array of members. */ + int n_members; /**< The number of members in this enum. */ + arch_enum_member_t *members[1]; /**< The array of members. */ }; typedef enum _arch_operand_type_t { @@ -132,29 +140,27 @@ typedef enum _arch_operand_type_t { arch_operand_type_register, arch_operand_type_immediate, arch_operand_type_symconst, - arch_operand_type_last + arch_operand_type_last } arch_operand_type_t; /** * Different types of register allocation requirements. */ typedef enum _arch_register_req_type_t { - arch_register_req_type_none = 0, /** No register requirement. */ + arch_register_req_type_none = 0, /**< No register requirement. */ - arch_register_req_type_normal = 1, /** All registers in the class - are allowed. */ + arch_register_req_type_normal = 1, /**< All registers in the class + are allowed. */ - arch_register_req_type_limited = 2, /** Only a real subset of - the class is allowed. */ + arch_register_req_type_limited = 2, /**< Only a real subset of + the class is allowed. */ - arch_register_req_type_equal = 4, /** The register must equal - another one at the node. */ + arch_register_req_type_should_be_same = 4, /**< The register should be equal + another one at the node. */ - arch_register_req_type_unequal = 8, /** The register must be unequal - to some other at the node. */ + arch_register_req_type_should_be_different = 8, /**< The register must be unequal + to some other at the node. */ - arch_register_req_type_pair = 16 /** The register is part of a - register pair. */ } arch_register_req_type_t; #define arch_register_req_is_constr(x) \ @@ -164,19 +170,19 @@ typedef enum _arch_register_req_type_t { * Expresses requirements to register allocation for an operand. */ typedef struct _arch_register_req_t { - arch_register_req_type_t type; /** The type of the constraint. */ - const arch_register_class_t *cls; /** The register class this - constraint belongs to. */ + arch_register_req_type_t type; /**< The type of the constraint. */ + const arch_register_class_t *cls; /**< The register class this + constraint belongs to. */ union { int (*limited)(const ir_node *irn, int pos, bitset_t *bs); - /** In case of the 'limited' + /**< In case of the 'limited' constraint, this function must put all allowable registers in the bitset and return the number of registers in the bitset. */ - int pos; /** In case of the equal constraint, + int pos; /**< In case of the equal constraint, this gives the position of the operand to which the register of this should be equal to. Same for @@ -196,60 +202,13 @@ typedef enum _arch_irn_class_t { arch_irn_class_branch } arch_irn_class_t; -/* - * Some words about positions and indices: - * - * Firm has the policy "One node per value", that's why there are - * Proj nodes. This view has its advantages, but in a backend - * setting where we talk about instructions (which can also have - * multiple results and not a single Tuple value) this is sometimes - * hard. - * - * Each node representing an instruction must provide information - * about the kind of its operands (where operands mean both input - * and output operands). Such an operand is addressed with a position - * which is infact a tuple {in, out} x N. The fact that a position - * is an input/output operand is encoded in the sign, so input operands - * go from 0..n-1 and output operands from -1..-m if the - * instruction has n input and m output operands. - */ - -#define _BEARCH_TRANSFORM_INDEX(cmp, index) ((index) cmp 0 ? -((index) + 1) : (index)) - /** - * Make an in position from an index. - * @param index The index. - * @return The position representing the index as an in operand. + * Some flags describing a node in more detail. */ -#define arch_pos_make_in(index) _BEARCH_TRANSFORM_INDEX(<, index) - -/** - * Make an out position from an index. - * @param index The index. - * @return The position representing the index as an out operand. - */ -#define arch_pos_make_out(index) _BEARCH_TRANSFORM_INDEX(>=, index) - -/** - * Check, if a position denotes an input operand. - * @param pos The position. - * @return 1, if the position denotes an input operand 0 if not. - */ -#define arch_pos_is_in(pos) ((pos) >= 0) - -/** - * Check, if a position denotes an output operand. - * @param pos The position. - * @return 1, if the position denotes an output operand 0 if not. - */ -#define arch_pos_is_out(pos) (!arch_pos_is_in(pos)) - -/** - * Get the index of a position. - * @param pos The position. - * @return The index of the position. - */ -#define arch_pos_get_index(pos) _BEARCH_TRANSFORM_INDEX(<, pos) +typedef enum _arch_irn_flags_t { + arch_irn_flags_spillable = 1, + arch_irn_flags_rematerializable = 2 +} arch_irn_flags_t; struct _arch_irn_ops_t { @@ -257,45 +216,33 @@ struct _arch_irn_ops_t { * Get the register requirements for a given operand. * @param self The self pointer. * @param irn The node. - * @param pos The operand's position. + * @param pos The operand's position + * (-1 for the result of the node, 0..n for the input + * operands). * @return The register requirements for the selected operand. * The pointer returned is never NULL. */ const arch_register_req_t *(*get_irn_reg_req)(const arch_irn_ops_t *self, - arch_register_req_t *req, - const ir_node *irn, int pos); - - /** - * Get the number of operands of a node. - * @param irn The node. - * @param in_out Denotes wither input (a number >= 0) or - * output (a number < 0). - * @return The number of operands for either in, or output. - */ - int (*get_n_operands)(const arch_irn_ops_t *self, const ir_node *irn, int in_out); + arch_register_req_t *req, const ir_node *irn, int pos); /** * Set the register for an output operand. * @param irn The node. - * @param pos The position of the output operand. * @param reg The register allocated to that operand. * @note If the operand is not a register operand, * the call is ignored. */ - void (*set_irn_reg)(const arch_irn_ops_t *self, ir_node *irn, - int idx, const arch_register_t *reg); + void (*set_irn_reg)(const arch_irn_ops_t *self, ir_node *irn, const arch_register_t *reg); /** * Get the register allocated for an output operand. * @param irn The node. - * @param pos The index of the output operand. * @return The register allocated at that operand. NULL, if * the operand was no register operand or * @c arch_register_invalid, if no register has yet been * allocated for this node. */ - const arch_register_t *(*get_irn_reg)(const arch_irn_ops_t *self, - const ir_node *irn, int idx); + const arch_register_t *(*get_irn_reg)(const arch_irn_ops_t *self, const ir_node *irn); /** * Classify the node. @@ -304,6 +251,14 @@ struct _arch_irn_ops_t { */ arch_irn_class_t (*classify)(const arch_irn_ops_t *self, const ir_node *irn); + /** + * Get the flags of a node. + * @param self The irn ops themselves. + * @param irn The node. + * @return A set of flags. + */ + arch_irn_flags_t (*get_flags)(const arch_irn_ops_t *self, const ir_node *irn); + }; /** @@ -372,13 +327,12 @@ arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos); /** * Get the register allocated at a certain output operand of a node. - * @param env The arch nvironment. + * @param env The arch environment. * @param irn The node. - * @param idx The index of the output operand. * @return The register allocated for this operand */ extern const arch_register_t * -arch_get_irn_register(const arch_env_t *env, const ir_node *irn, int idx); +arch_get_irn_register(const arch_env_t *env, const ir_node *irn); /** * Set the register for a certain output operand. @@ -387,8 +341,8 @@ arch_get_irn_register(const arch_env_t *env, const ir_node *irn, int idx); * @param idx The index of the output operand. * @param reg The register. */ -extern void arch_set_irn_register(const arch_env_t *env, - ir_node *irn, int idx, const arch_register_t *reg); +extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn, + const arch_register_t *reg); /** * Classify a node. @@ -398,6 +352,14 @@ extern void arch_set_irn_register(const arch_env_t *env, */ extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn); +/** + * Get the flags of a node. + * @param env The architecture environment. + * @param irn The node. + * @return The flags. + */ +extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn); + #define arch_irn_has_reg_class(env, irn, pos, cls) \ ((cls) == arch_get_irn_reg_class(env, irn, pos)) @@ -417,31 +379,129 @@ struct _arch_irn_handler_t { }; +/** + * The code generator. + */ +struct _arch_code_generator_if_t { + + + /** + * Initialize the code generator. + * @param file The file to dump to. + * @param irg The function to generate code for. + * @param env The architecture environment. + * @return A newly created code generator. + */ + void *(*init)(FILE *file, ir_graph *irg, const arch_env_t *env); + + /** + * Called, when the graph is being normalized. + */ + void (*prepare_graph)(void *self); + + /** + * Called before scheduling. + */ + void (*before_sched)(void *self); + + /** + * Called before register allocation. + */ + void (*before_ra)(void *self); + + /** + * Called after everything happened. + * The code generator must also be de-allocated here. + */ + void (*done)(void *self); + +}; + +#define _arch_cg_call(cg, func) \ +do { \ + if((cg)->impl->func) \ + (cg)->impl->func(cg); \ +} while(0) + +#define arch_code_generator_prepare_graph(cg) _arch_cg_call(cg, prepare_graph) +#define arch_code_generator_before_sched(cg) _arch_cg_call(cg, before_sched) +#define arch_code_generator_before_ra(cg) _arch_cg_call(cg, before_ra) +#define arch_code_generator_done(cg) _arch_cg_call(cg, done) + +/** + * Code generator base class. + */ +struct _arch_code_generator_t { + const arch_code_generator_if_t *impl; +}; + +/** + * ISA base class. + */ +struct _arch_isa_t { + const arch_isa_if_t *impl; +}; + /** * Architecture interface. */ struct _arch_isa_if_t { +#ifdef WITH_LIBCORE + void (*register_options)(lc_opt_entry_t *grp); +#endif + /** * Initialize the isa interface. */ - void (*init)(void); + void *(*init)(void); + + /** + * Free the isa instance. + */ + void (*done)(void *self); /** * Get the the number of register classes in the isa. * @return The number of register classes. */ - int (*get_n_reg_class)(void); + int (*get_n_reg_class)(const void *self); /** * Get the i-th register class. * @param i The number of the register class. * @return The register class. */ - const arch_register_class_t *(*get_reg_class)(int i); + const arch_register_class_t *(*get_reg_class)(const void *self, int i); + /** + * The irn handler for this architecture. + * The irn handler is registered by the Firm back end + * when the architecture is initialized. + * (May be NULL). + */ + const arch_irn_handler_t *(*get_irn_handler)(const void *self); + + /** + * Get the code generator interface. + * @param self The this pointer. + * @return Some code generator interface. + */ + const arch_code_generator_if_t *(*get_code_generator)(void *self); + + /** + * Get the list scheduler to use. + * @param self The isa object. + * @return The list scheduler selector. + */ + const list_sched_selector_t *(*get_list_sched_selector)(const void *self); }; +#define arch_isa_get_n_reg_class(isa) ((isa)->impl->get_n_reg_class(isa)) +#define arch_isa_get_reg_class(isa,i) ((isa)->impl->get_reg_class(isa, i)) +#define arch_isa_get_irn_handler(isa) ((isa)->impl->get_irn_handler(isa)) +#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator(isa, irg)) + #define ARCH_MAX_HANDLERS 8 /** @@ -450,7 +510,7 @@ struct _arch_isa_if_t { */ struct _arch_env_t { const struct _be_node_factory_t *node_factory; /**< The node factory for be nodes. */ - const arch_isa_if_t *isa; /**< The isa about which everything is. */ + arch_isa_t *isa; /**< The isa about which everything is. */ arch_irn_handler_t const *handlers[ARCH_MAX_HANDLERS]; /**< The handlers are organized as a stack. */