X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=e6d1431d3024ffd42975cc2e8e8802c0115ce50e;hb=4ed245f5007168dab7850942a7ee6b6b29a19817;hp=011b5cb620d821fb37cde30c6d240245210dd5e9;hpb=48bb3d05a2605481bf32b4fb20dbb41c4898e24e;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index 011b5cb62..e6d1431d3 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -19,14 +19,14 @@ struct _be_node_factory_t; typedef enum _arch_register_type_t { - arch_register_type_none = 0, + arch_register_type_none = 0, arch_register_type_caller_save = 1, /**< 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_save = 2, /**< The register must be saved by the caller upon a function call. It thus can be overwritten in the called function. */ - arch_register_type_ignore = 4, /**< Do not consider this register when allocating. */ + arch_register_type_ignore = 4, /**< Do not consider this register when allocating. */ } arch_register_type_t; /** @@ -36,7 +36,7 @@ typedef enum _arch_register_type_t { * @return 1, If register is of given kind, 0 if not. */ #define arch_register_type_is(reg, kind) \ - (((reg)->type & arch_register_type_ ## kind) != 0) + (((reg)->type & arch_register_type_ ## kind) != 0) /** * A register. @@ -75,8 +75,12 @@ struct _arch_register_class_t { const arch_register_t *regs; /**< The array of registers. */ }; +/** return the number of registers in this register class */ #define arch_register_class_n_regs(cls) ((cls)->n_regs) +/** return the largest mode of this register class */ +#define arch_register_class_mode(cls) ((cls)->mode) + /** * Put all registers in a class into a bitset. * @param cls The class. @@ -173,15 +177,32 @@ extern char *arch_register_req_format(char *buf, size_t len, const arch_register * Certain node classes which are relevant for the register allocator. */ typedef enum _arch_irn_class_t { - arch_irn_class_normal, - arch_irn_class_spill, - arch_irn_class_reload, - arch_irn_class_copy, - arch_irn_class_perm, - arch_irn_class_branch, - arch_irn_class_call + arch_irn_class_normal = 1 << 0, + arch_irn_class_spill = 1 << 1, + arch_irn_class_reload = 1 << 2, + arch_irn_class_copy = 1 << 3, + arch_irn_class_perm = 1 << 4, + arch_irn_class_branch = 1 << 5, + arch_irn_class_call = 1 << 6, + arch_irn_class_const = 1 << 7, + arch_irn_class_load = 1 << 8, + arch_irn_class_store = 1 << 9, + arch_irn_class_stackparam = 1 << 10, } arch_irn_class_t; +/** + * An inverse operation returned by the backend + */ +typedef struct _arch_inverse_t { + int n; /**< count of nodes returned in nodes array */ + int costs; /**< costs of this remat */ + + /**< nodes for this inverse operation. shall be in + * schedule order. last element is the target value + */ + ir_node **nodes; +} arch_inverse_t; + /** * Some flags describing a node in more detail. */ @@ -190,7 +211,8 @@ typedef enum _arch_irn_flags_t { arch_irn_flags_dont_spill = 1, /**< This must not be spilled. */ arch_irn_flags_rematerializable = 2, /**< This should be replicated instead of spilled/reloaded. */ arch_irn_flags_ignore = 4, /**< Ignore node during register allocation. */ - arch_irn_flags_last = arch_irn_flags_ignore + arch_irn_flags_modify_sp = 8, /**< I modify the stack pointer. */ + arch_irn_flags_last = arch_irn_flags_modify_sp } arch_irn_flags_t; /** @@ -258,6 +280,14 @@ struct _arch_irn_ops_if_t { */ entity *(*get_frame_entity)(const void *self, const ir_node *irn); + /** + * Set the entity on the stack frame this node depends on. + * @param self The this pointer. + * @param irn The node in question. + * @param ent The entity to set + */ + void (*set_frame_entity)(const void *self, ir_node *irn, entity *ent); + /** * Set the offset of a node carrying an entity on the stack frame. * @param self The this pointer. @@ -265,6 +295,50 @@ struct _arch_irn_ops_if_t { * @param offset The offset of the node's stack frame entity. */ void (*set_frame_offset)(const void *self, ir_node *irn, int offset); + + /** + * Returns an inverse operation which yields the i-th argument + * of the given node as result. + * + * @param self The this pointer. + * @param irn The original operation + * @param i Index of the argument we want the inverse operation to yield + * @param inverse struct to be filled with the resulting inverse op + * @param obstack The obstack to use for allocation of the returned nodes array + * @return The inverse operation or NULL if operation invertible + */ + arch_inverse_t *(*get_inverse)(const void *self, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack); + + /** + * Get the estimated cycle count for @p irn. + * + * @param self The this pointer. + * @param irn The node. + * + * @return The estimated cycle count for this operation + */ + int (*get_op_estimated_cost)(const void *self, const ir_node *irn); + + /** + * Asks the backend whether operand @p i of @p irn can be loaded form memory internally + * + * @param self The this pointer. + * @param irn The node. + * @param i Index of the argument we would like to know whether @p irn can load it form memory internally + * + * @return nonzero if argument can be loaded or zero otherwise + */ + int (*possible_memory_operand)(const void *self, const ir_node *irn, unsigned int i); + + /** + * Ask the backend to assimilate @p reload of operand @p i into @p irn. + * + * @param self The this pointer. + * @param irn The node. + * @param reload The reload. + * @param i The position of the reload. + */ + void (*perform_memory_operand)(const void *self, ir_node *irn, ir_node *reload, unsigned int i); }; /** @@ -274,9 +348,17 @@ struct _arch_irn_ops_t { const arch_irn_ops_if_t *impl; }; +extern const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn); + extern void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int bias); extern entity *arch_get_frame_entity(const arch_env_t *env, ir_node *irn); +extern void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, entity *ent); + +extern int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn); +extern arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack); +extern int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i); +extern void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *reload, unsigned int i); /** * Get the register requirements for a node. @@ -327,6 +409,15 @@ extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, */ extern void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs); +/** + * Return the number of registers in a register class which should not be + * ignored by the register allocator. + * @param env The architecture environment. + * @param cls The register class to consider + * @return The number of non-ignore registers in the register class + */ +extern int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls); + /** * Check, if a register is assignable to an operand of a node. * @param env The architecture environment. @@ -342,7 +433,7 @@ extern int arch_reg_is_allocatable(const arch_env_t *env, * Get the register class of an operand of a node. * @param env The architecture environment. * @param irn The node. - * @param pos The position of the operand. + * @param pos The position of the operand, -1 for the output. * @return The register class of the operand or NULL, if * operand is a non-register operand. */ @@ -376,6 +467,8 @@ extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn, */ extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn); +#define arch_irn_class_is(env, irn, irn_class) ((arch_irn_classify(env, irn) & arch_irn_class_ ## irn_class) != 0) + /** * Get the flags of a node. * @param env The architecture environment. @@ -413,11 +506,10 @@ struct _arch_irn_handler_t { struct _arch_code_generator_if_t { /** * Initialize the code generator. - * @param file The file to dump to. * @param birg A backend IRG session. * @return A newly created code generator. */ - void *(*init)(FILE *file, const be_irg_t *birg); + void *(*init)(const be_irg_t *birg); /** * Called before abi introduce. @@ -445,7 +537,14 @@ struct _arch_code_generator_if_t { void (*after_ra)(void *self); /** - * Called after everything happened. + * Called directly before done is called. This should be the last place + * where the irg is modified. + */ + void (*finish)(void *self); + + /** + * Called after everything happened. This call should emit the final + * assembly code but avoid changing the irg. * The code generator must also be de-allocated here. */ void (*done)(void *self); @@ -466,6 +565,7 @@ do { \ #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_after_ra(cg) _arch_cg_call(cg, after_ra) +#define arch_code_generator_finish(cg) _arch_cg_call(cg, finish) #define arch_code_generator_done(cg) _arch_cg_call(cg, done) /** @@ -494,14 +594,12 @@ struct _arch_isa_t { */ struct _arch_isa_if_t { -#ifdef WITH_LIBCORE - void (*register_options)(lc_opt_entry_t *grp); -#endif - /** * Initialize the isa interface. + * @param file_handle the file handle to write the output to + * @return a new isa instance */ - void *(*init)(void); + void *(*init)(FILE *file_handle); /** * Free the isa instance. @@ -559,14 +657,36 @@ struct _arch_isa_if_t { */ const list_sched_selector_t *(*get_list_sched_selector)(const void *self); + /** + * Get the necessary alignment for storing a register of given class. + * @param self The isa object. + * @param cls The register class. + * @return The alignment in bytes. + */ + int (*get_reg_class_alignment)(const void *self, const arch_register_class_t *cls); + + /** + * A "static" function, returns the frontend settings + * needed for this backend. + */ + const backend_params *(*get_params)(void); + +#ifdef WITH_LIBCORE + /** + * Register command line options for this backend. + * @param grp The root group. + */ + void (*register_options)(lc_opt_entry_t *grp); +#endif }; -#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_get_call_abi(isa,tp,abi) ((isa)->impl->get_call_abi((isa), (tp), (abi))) -#define arch_isa_get_reg_class_for_mode(isa,mode) ((isa)->impl->get_reg_class_for_mode((isa), (mode))) -#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator(isa, irg)) +#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_get_call_abi(isa,tp,abi) ((isa)->impl->get_call_abi((isa), (tp), (abi))) +#define arch_isa_get_reg_class_for_mode(isa,mode) ((isa)->impl->get_reg_class_for_mode((isa), (mode))) +#define arch_isa_make_code_generator(isa,irg) ((isa)->impl->make_code_generator((isa), (irg))) +#define arch_isa_get_reg_class_alignment(isa, cls) ((isa)->impl->get_reg_class_alignment((isa), (cls))) #define ARCH_MAX_HANDLERS 8 @@ -594,10 +714,11 @@ struct _arch_env_t { /** * Initialize the architecture environment struct. - * @param isa The isa which shall be put into the environment. + * @param isa The isa which shall be put into the environment. + * @param file_handle The file handle * @return The environment. */ -extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa); +extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa, FILE *file_handle); /** * Add a node handler to the environment. @@ -614,4 +735,5 @@ extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_han */ extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env); + #endif /* _FIRM_BEARCH_H */