X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbearch.h;h=d1f84e55215d276876b79cd8924ac02286b8e389;hb=39e27d1fe336c1238bfe4a7b614d103762e39ba2;hp=c189cbe8b03404217b977a6e6275b07c8047e963;hpb=071b81998b17c006621e299c51aafd7ffc19f27a;p=libfirm diff --git a/ir/be/bearch.h b/ir/be/bearch.h index c189cbe8b..d1f84e552 100644 --- a/ir/be/bearch.h +++ b/ir/be/bearch.h @@ -1,49 +1,32 @@ #ifndef _FIRM_BEARCH_H #define _FIRM_BEARCH_H -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - +#include "firm_config.h" #ifdef WITH_LIBCORE #include #endif -#include "irnode.h" -#include "irmode.h" +#include "firm_types.h" #include "bitset.h" -#include "hashptr.h" -#include "fourcc.h" -#include "set.h" -#include "list.h" -#include "ident.h" #include "belistsched.h" - -typedef struct _arch_register_class_t arch_register_class_t; -typedef struct _arch_register_t arch_register_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_if_t arch_irn_ops_if_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; +#include "beabi_t.h" +#include "bearch_t.h" +#include "be_t.h" struct _be_node_factory_t; typedef enum _arch_register_type_t { - 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_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_t; /** @@ -53,7 +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) + (((reg)->type & arch_register_type_ ## kind) != 0) /** * A register. @@ -88,11 +71,16 @@ static INLINE int _arch_register_get_index(const arch_register_t *reg) struct _arch_register_class_t { const char *name; /**< The name of the register class. */ int n_regs; /**< Number of registers in this class. */ + ir_mode *mode; /**< The mode of the register class. */ 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. @@ -138,6 +126,8 @@ typedef enum _arch_register_req_type_t { arch_register_req_type_should_be_different = 8, /**< The register must be unequal to some other at the node. */ + arch_register_req_type_should_be_different_from_all = 16, /**< The register must be different from + all in's at the node */ } arch_register_req_type_t; /** @@ -156,7 +146,7 @@ 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. */ - void (*limited)(const ir_node *irn, int pos, bitset_t *bs); + void (*limited)(void *limited_env, bitset_t *bs); /**< In case of the 'limited' constraint, this function must put all allowable @@ -164,33 +154,75 @@ typedef struct _arch_register_req_t { return the number of registers in the bitset. */ - ir_node *other; /**< In case of "should be equal" - or should be different, this gives - the node to whose register this - one's should be the same/different. */ + void *limited_env; /**< This must passed to limited. */ + + ir_node *other_same; /**< The other which shall have the same reg + as this one. (for case should_be_same). */ + + ir_node *other_different; /**< The other node from which this one's register + must be different (case must_be_different). */ } arch_register_req_t; +/** + * Format a register requirements information into a string. + * @param buf The string where to put it to. + * @param len The size of @p buf. + * @param req The requirements structure to format. + * @return A pointer to buf. + */ +extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req); + + /** * 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. */ typedef enum _arch_irn_flags_t { - arch_irn_flags_spillable = 1, - arch_irn_flags_rematerializable = 2 + 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_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 } arch_irn_flags_t; +/** + * Get the string representation of a flag. + * This functions does not handle or'ed bitmasks of flags. + * @param flag The flag. + * @return The flag as a string. + */ +extern const char *arch_irn_flag_str(arch_irn_flags_t flag); + struct _arch_irn_ops_if_t { /** @@ -240,6 +272,87 @@ struct _arch_irn_ops_if_t { */ arch_irn_flags_t (*get_flags)(const void *self, const ir_node *irn); + /** + * 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. + */ + 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. + * @param irn The node. + * @param offset The offset of the node's stack frame entity. + */ + 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 + * @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 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); }; /** @@ -249,6 +362,19 @@ 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_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. * @param env The architecture environment. @@ -281,15 +407,31 @@ extern int arch_is_register_operand(const arch_env_t *env, * @param env The environment. * @param irn The node. * @param pos The postition of the node's operand. - * @param cls The register class. * @param bs The bitset all allocatable registers shall be put into. * Note, that you can also pass NULL here. If you don't, * make sure, the bitset is as large as the register class * has registers. * @return The amount of registers allocatable for that operand. */ -extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, - int pos, const arch_register_class_t *cls, bitset_t *bs); +extern int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs); + +/** + * Put all registers which shall not be ignored by the register + * allocator in a bit set. + * @param env The arch env. + * @param cls The register class to consider. + * @param bs The bit set to put the registers to. + */ +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. @@ -306,7 +448,7 @@ 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. */ @@ -340,6 +482,8 @@ 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. @@ -348,11 +492,16 @@ extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node * */ extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn); +#define arch_irn_is(env, irn, flag) ((arch_irn_get_flags(env, irn) & arch_irn_flags_ ## flag) != 0) + #define arch_irn_has_reg_class(env, irn, pos, cls) \ ((cls) == arch_get_irn_reg_class(env, irn, pos)) +#define arch_irn_consider_in_reg_alloc(env, cls, irn) \ + (arch_irn_has_reg_class(env, irn, -1, cls) && !arch_irn_is(env, irn, ignore)) + /** - * Somebody who can be asked about nodes. + * Somebody who can be asked about IR nodes. */ struct _arch_irn_handler_t { @@ -364,23 +513,23 @@ struct _arch_irn_handler_t { */ const void *(*get_irn_ops)(const arch_irn_handler_t *handler, const ir_node *irn); - }; /** - * The code generator. + * The code generator interface. */ 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. + * @param birg A backend IRG session. * @return A newly created code generator. */ - void *(*init)(FILE *file, ir_graph *irg, const arch_env_t *env); + void *(*init)(const be_irg_t *birg); + + /** + * Called before abi introduce. + */ + void (*before_abi)(void *self); /** * Called, when the graph is being normalized. @@ -398,32 +547,40 @@ struct _arch_code_generator_if_t { void (*before_ra)(void *self); /** - * Called after register allocation to lower Spills to Stores + * Called after register allocation. */ - ir_node *(*lower_spill)(void *self, ir_node *spill); + void (*after_ra)(void *self); /** - * Called after register allocation to lower Reloads to Loads + * Called directly before done is called. This should be the last place + * where the irg is modified. */ - ir_node *(*lower_reload)(void *self, ir_node *reload); + void (*finish)(void *self); /** - * Called after everything happened. + * 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); - }; +/** + * helper macro: call function func from the code generator + * if it's implemented. + */ #define _arch_cg_call(cg, func) \ do { \ if((cg)->impl->func) \ (cg)->impl->func(cg); \ } 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) /** @@ -438,21 +595,26 @@ struct _arch_code_generator_t { */ 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. */ }; +#define arch_isa_stack_dir(isa) ((isa)->stack_dir) +#define arch_isa_sp(isa) ((isa)->sp) +#define arch_isa_bp(isa) ((isa)->bp) + /** * Architecture interface. */ 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. @@ -472,6 +634,22 @@ struct _arch_isa_if_t { */ 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 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 @@ -495,18 +673,35 @@ struct _arch_isa_if_t { const list_sched_selector_t *(*get_list_sched_selector)(const void *self); /** - * Get the proj number assigned to the register. + * Get the necessary alignment for storing a register of given class. * @param self The isa object. - * @param reg The register - * @return The proj number assigned to this register + * @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. */ - long (*get_projnum_for_register)(const void *self, const arch_register_t *reg); + 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_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 @@ -534,10 +729,11 @@ 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. @@ -545,7 +741,14 @@ extern arch_env_t *arch_env_init(arch_env_t *env, const arch_isa_if_t *isa); * @param handler A node handler. * @return The environment itself. */ -extern arch_env_t *arch_env_add_irn_handler(arch_env_t *env, - const arch_irn_handler_t *handler); +extern arch_env_t *arch_env_push_irn_handler(arch_env_t *env, const arch_irn_handler_t *handler); + +/** + * Remove a node handler from the handler stack. + * @param env The architecture environment. + * @return The popped handler. + */ +extern const arch_irn_handler_t *arch_env_pop_irn_handler(arch_env_t *env); + #endif /* _FIRM_BEARCH_H */