X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=a084563e6508bd7a4c333170680789410237636a;hb=e243eb2e9e8a9f5e57e166950a1a0a8ab25e92a9;hp=edb58e776f6c48ace16c035fb1e72d948fdfb80e;hpb=65bbd0e5ca976c7e6b41418489047e7edd95f2b1;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index edb58e776..a084563e6 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -12,21 +12,26 @@ #include "bitset.h" #include "belistsched.h" +#include "beilpsched.h" #include "beabi_t.h" #include "bearch_t.h" #include "be_t.h" +#include "bemachine.h" +#include "beirg.h" struct _be_node_factory_t; typedef enum _arch_register_type_t { 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_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_joker = 8, /**< The emitter can choose an arbitrary register */ + arch_register_type_virtual = 16, /**< This is just a virtual register */ } arch_register_type_t; /** @@ -42,11 +47,11 @@ typedef enum _arch_register_type_t { * A register. */ struct _arch_register_t { - const char *name; /**< The name of the register. */ + 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. */ - void *data; /**< Custom data. */ + int index; /**< The index of the register in the class. */ + arch_register_type_t type; /**< The type of the register. */ + void *data; /**< Custom data. */ }; static INLINE const arch_register_class_t * @@ -60,9 +65,14 @@ static INLINE int _arch_register_get_index(const arch_register_t *reg) return reg->index; } +static INLINE const char *_arch_register_get_name(const arch_register_t *reg) +{ + return reg->name; +} + #define arch_register_get_class(reg) _arch_register_get_class(reg) #define arch_register_get_index(reg) _arch_register_get_index(reg) -#define arch_register_get_name(reg) ((reg)->name) +#define arch_register_get_name(reg) _arch_register_get_name(reg) /** * A class of registers. @@ -81,6 +91,9 @@ struct _arch_register_class_t { /** return the largest mode of this register class */ #define arch_register_class_mode(cls) ((cls)->mode) +/** return the name of this register class */ +#define arch_register_class_name(cls) ((cls)->name) + /** * Put all registers in a class into a bitset. * @param cls The class. @@ -177,14 +190,17 @@ 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_const, + 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; /** @@ -206,7 +222,7 @@ typedef struct _arch_inverse_t { typedef enum _arch_irn_flags_t { arch_irn_flags_none = 0, /**< Node flags. */ 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_rematerializable = 2, /**< This can be replicated instead of spilled/reloaded. */ arch_irn_flags_ignore = 4, /**< Ignore node during register allocation. */ arch_irn_flags_modify_sp = 8, /**< I modify the stack pointer. */ arch_irn_flags_last = arch_irn_flags_modify_sp @@ -273,9 +289,18 @@ struct _arch_irn_ops_if_t { * Get the entity on the stack frame this node depends on. * @param self The this pointer. * @param irn The node in question. - * @return The entity on the stack frame or NULL, if the node does not has a stack frame entity. + * @return The entity on the stack frame or NULL, if the node does not have a + * stack frame entity. */ - entity *(*get_frame_entity)(const void *self, const ir_node *irn); + ir_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, ir_entity *ent); /** * Set the offset of a node carrying an entity on the stack frame. @@ -285,10 +310,25 @@ struct _arch_irn_ops_if_t { */ void (*set_frame_offset)(const void *self, ir_node *irn, int offset); + /** + * Returns the delta of the stackpointer for nodes that increment or + * decrement the stackpointer with a constant value. (push, pop + * nodes on most architectures). + * A positive value stands for an expanding stack area, a negative value for + * a shrinking one. + * + * @param self The this pointer + * @param irn The node + * @return 0 if the stackpointer is not modified with a constant + * value, otherwise the increment/decrement value + */ + int (*get_sp_bias)(const void *self, const ir_node *irn); + /** * 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 @@ -297,6 +337,36 @@ struct _arch_irn_ops_if_t { */ 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 spill The spill. + * @param i The position of the reload. + */ + void (*perform_memory_operand)(const void *self, ir_node *irn, ir_node *spill, unsigned int i); }; /** @@ -306,11 +376,18 @@ 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 ir_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, ir_entity *ent); +extern int arch_get_sp_bias(const arch_env_t *env, ir_node *irn); +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 *spill, unsigned int i); /** * Get the register requirements for a node. @@ -410,6 +487,8 @@ 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. @@ -450,7 +529,7 @@ struct _arch_code_generator_if_t { * @param birg A backend IRG session. * @return A newly created code generator. */ - void *(*init)(const be_irg_t *birg); + void *(*init)(be_irg_t *birg); /** * Called before abi introduce. @@ -462,6 +541,12 @@ struct _arch_code_generator_if_t { */ void (*prepare_graph)(void *self); + /** + * Backend may provide an own spiller. + * This spiller needs to spill all register classes. + */ + void (*spill)(void *self, be_irg_t *birg); + /** * Called before scheduling. */ @@ -478,7 +563,14 @@ 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); @@ -494,12 +586,21 @@ do { \ (cg)->impl->func(cg); \ } while(0) +#define _arch_cg_call_env(cg, env, func) \ +do { \ + if((cg)->impl->func) \ + (cg)->impl->func(cg, env); \ +} while(0) + #define arch_code_generator_before_abi(cg) _arch_cg_call(cg, before_abi) #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_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) +#define arch_code_generator_spill(cg, birg) _arch_cg_call_env(cg, birg, spill) +#define arch_code_generator_has_spiller(cg) ((cg)->impl->spill != NULL) /** * Code generator base class. @@ -512,10 +613,11 @@ struct _arch_code_generator_t { * ISA base class. */ struct _arch_isa_t { - const arch_isa_if_t *impl; - const arch_register_t *sp; /** The stack pointer register. */ - const arch_register_t *bp; /** The base pointer register. */ - const int stack_dir; /** -1 for decreasing, 1 for increasing. */ + const arch_isa_if_t *impl; + const arch_register_t *sp; /** The stack pointer register. */ + const arch_register_t *bp; /** The base pointer register. */ + const int stack_dir; /** -1 for decreasing, 1 for increasing. */ + const be_main_env_t *main_env; /** the be main environment */ }; #define arch_isa_stack_dir(isa) ((isa)->stack_dir) @@ -526,94 +628,126 @@ struct _arch_isa_t { * Architecture interface. */ struct _arch_isa_if_t { - - /** - * Initialize the isa interface. + /** + * Initialize the isa interface. * @param file_handle the file handle to write the output to + * @param main_env the be main environment * @return a new isa instance - */ - void *(*init)(FILE *file_handle); + */ + void *(*init)(FILE *file_handle); - /** - * Free the isa instance. - */ - void (*done)(void *self); + /** + * 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)(const void *self); + /** + * Get the the number of register classes in the isa. + * @return The number of register classes. + */ + 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)(const void *self, int i); + /** + * 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)(const void *self, int i); - /** - * Get the register class which shall be used to store a value of a given mode. - * @param self The this pointer. - * @param mode The mode in question. - * @return A register class which can hold values of the given mode. - */ - const arch_register_class_t *(*get_reg_class_for_mode)(const void *self, const ir_mode *mode); + /** + * Get the register class which shall be used to store a value of a given mode. + * @param self The this pointer. + * @param mode The mode in question. + * @return A register class which can hold values of the given mode. + */ + const arch_register_class_t *(*get_reg_class_for_mode)(const void *self, const ir_mode *mode); - /** - * Get the ABI restrictions for procedure calls. - * @param self The this pointer. - * @param method_type The type of the method (procedure) in question. - * @param p The array of parameter locations to be filled. - */ - void (*get_call_abi)(const void *self, ir_type *method_type, be_abi_call_t *abi); + /** + * Get the ABI restrictions for procedure calls. + * @param self The this pointer. + * @param method_type The type of the method (procedure) in question. + * @param p The array of parameter locations to be filled. + */ + void (*get_call_abi)(const void *self, ir_type *method_type, be_abi_call_t *abi); - /** - * 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); + /** + * 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_if)(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_if)(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); + /** + * Get the list scheduler to use. There is already a selector given, the + * backend is free to modify and/or ignore it. + * + * @param self The isa object. + * @param selector The selector given by options. + * @return The list scheduler selector. + */ + const list_sched_selector_t *(*get_list_sched_selector)(const void *self, list_sched_selector_t *selector); - /** - * 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); + /** + * Get the ILP scheduler to use. + * @param self The isa object. + * @return The ILP scheduler selector + */ + const ilp_sched_selector_t *(*get_ilp_sched_selector)(const void *self); -#ifdef WITH_LIBCORE /** - * Register command line options for this backend. - * @param grp The root group. + * 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. */ - void (*register_options)(lc_opt_entry_t *grp); -#endif + 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); + + /** + * Returns an 2-dim array of execution units, @p irn can be executed on. + * The first dimension is the type, the second the allowed units of this type. + * Each dimension is a NULL terminated list. + * @param self The isa object. + * @param irn The node. + * @return An array of allowed execution units. + * exec_unit = { + * { unit1_of_tp1, ..., unitX1_of_tp1, NULL }, + * ..., + * { unit1_of_tpY, ..., unitXn_of_tpY, NULL }, + * NULL + * }; + */ + const be_execution_unit_t ***(*get_allowed_execution_units)(const void *self, const ir_node *irn); + + /** + * Return the abstract machine for this isa. + * @param self The isa object. + */ + const be_machine_t *(*get_machine)(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_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_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_isa_get_allowed_execution_units(isa, irn) ((isa)->impl->get_allowed_execution_units((isa), (irn))) +#define arch_isa_get_machine(isa) ((isa)->impl->get_machine((isa))) #define ARCH_MAX_HANDLERS 8 @@ -645,7 +779,7 @@ struct _arch_env_t { * @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, FILE *file_handle); +extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa, FILE *file_handle, be_main_env_t *main_env); /** * Add a node handler to the environment. @@ -662,4 +796,9 @@ 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); +/** + * Register an instruction set architecture + */ +void be_register_isa_if(const char *name, const arch_isa_if_t *isa); + #endif /* _FIRM_BEARCH_H */